---
_id: '52700'
abstract:
- lang: eng
text: 'We explore the polarization hysteretic behaviour and field-dependent permittivity
of ferroelectric-dielectric 2D materials formed by random dispersions of low permittivity
inclusions in a ferroelectric matrix, using finite element simulations. We show
how the degree of impenetrability of dielectric inclusions plays a substantial
role in controlling the coercive field, remnant and saturation polarizations of
the homogenized materials. The results highlight the significance of the degree
of impenetrability of inclusion in tuning the effective polarization properties
of such ferroelectric composites: coercive field drops significantly as percolation
threshold is attained and remnant polarization decreases faster than a linear
decay.'
author:
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Pious Mathews
full_name: Mulavarickal Jose, Pious Mathews
last_name: Mulavarickal Jose
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Shafaq
full_name: Ejaz, Shafaq
last_name: Ejaz
- first_name: Christian
full_name: Brosseau, Christian
last_name: Brosseau
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Myroshnychenko V, Mulavarickal Jose PM, Farheen H, Ejaz S, Brosseau C, Förstner
J. From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric
butterfly shape in polarization loops. Physica Scripta. 2024;99(4):045952.
doi:10.1088/1402-4896/ad3172'
apa: 'Myroshnychenko, V., Mulavarickal Jose, P. M., Farheen, H., Ejaz, S., Brosseau,
C., & Förstner, J. (2024). From Swiss-cheese to discrete ferroelectric composites:
assessing the ferroelectric butterfly shape in polarization loops. Physica
Scripta, 99(4), 045952. https://doi.org/10.1088/1402-4896/ad3172'
bibtex: '@article{Myroshnychenko_Mulavarickal Jose_Farheen_Ejaz_Brosseau_Förstner_2024,
title={From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric
butterfly shape in polarization loops}, volume={99}, DOI={10.1088/1402-4896/ad3172},
number={4}, journal={Physica Scripta}, publisher={IOP Publishing}, author={Myroshnychenko,
Viktor and Mulavarickal Jose, Pious Mathews and Farheen, Henna and Ejaz, Shafaq
and Brosseau, Christian and Förstner, Jens}, year={2024}, pages={045952} }'
chicago: 'Myroshnychenko, Viktor, Pious Mathews Mulavarickal Jose, Henna Farheen,
Shafaq Ejaz, Christian Brosseau, and Jens Förstner. “From Swiss-Cheese to Discrete
Ferroelectric Composites: Assessing the Ferroelectric Butterfly Shape in Polarization
Loops.” Physica Scripta 99, no. 4 (2024): 045952. https://doi.org/10.1088/1402-4896/ad3172.'
ieee: 'V. Myroshnychenko, P. M. Mulavarickal Jose, H. Farheen, S. Ejaz, C. Brosseau,
and J. Förstner, “From Swiss-cheese to discrete ferroelectric composites: assessing
the ferroelectric butterfly shape in polarization loops,” Physica Scripta,
vol. 99, no. 4, p. 045952, 2024, doi: 10.1088/1402-4896/ad3172.'
mla: 'Myroshnychenko, Viktor, et al. “From Swiss-Cheese to Discrete Ferroelectric
Composites: Assessing the Ferroelectric Butterfly Shape in Polarization Loops.”
Physica Scripta, vol. 99, no. 4, IOP Publishing, 2024, p. 045952, doi:10.1088/1402-4896/ad3172.'
short: V. Myroshnychenko, P.M. Mulavarickal Jose, H. Farheen, S. Ejaz, C. Brosseau,
J. Förstner, Physica Scripta 99 (2024) 045952.
date_created: 2024-03-21T10:34:48Z
date_updated: 2024-03-21T10:40:51Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1088/1402-4896/ad3172
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2024-03-21T10:39:32Z
date_updated: 2024-03-21T10:39:32Z
file_id: '52701'
file_name: 2024-03 Myroshnychenko - Physica Scripta - From Swiss-cheese to discrete
ferroelectric.pdf
file_size: 5386508
relation: main_file
file_date_updated: 2024-03-21T10:39:32Z
has_accepted_license: '1'
intvolume: ' 99'
issue: '4'
keyword:
- tet_topic_ferro
language:
- iso: eng
oa: '1'
page: '045952'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Physica Scripta
publication_identifier:
issn:
- 0031-8949
- 1402-4896
publication_status: published
publisher: IOP Publishing
status: public
title: 'From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric
butterfly shape in polarization loops'
type: journal_article
user_id: '158'
volume: 99
year: '2024'
...
---
_id: '48599'
abstract:
- lang: eng
text: AbstractThe biexciton‐exciton emission cascade
commonly used in quantum‐dot systems to generate polarization entanglement yields
photons with intrinsically limited indistinguishability. In the present work,
it focuses on the generation of pairs of photons with high degrees of polarization
entanglement and simultaneously high indistinguishability. It achieves this goal
by selectively reducing the biexciton lifetime with an optical resonator. It demonstrates
that a suitably tailored circular Bragg reflector fulfills the requirements of
sufficient selective Purcell enhancement of biexciton emission paired with spectrally
broad photon extraction and twofold degenerate optical modes. The in‐depth theoretical
study combines (i) the optimization of realistic photonic structures solving Maxwell's
equations from which model parameters are extracted as input for (ii) microscopic
simulations of quantum‐dot cavity excitation dynamics with full access to photon
properties. It reports non‐trivial dependencies on system parameters and use the
predictive power of the combined theoretical approach to determine the optimal
range of Purcell enhancement that maximizes indistinguishability and entanglement
to near unity values, here specifically for the telecom C‐band at 1550 nm.
author:
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Dustin
full_name: Siebert, Dustin
last_name: Siebert
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On‐Demand Indistinguishable
and Entangled Photons Using Tailored Cavity Designs. Advanced Quantum Technologies.
Published online 2023. doi:10.1002/qute.202300142
apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., & Schumacher, S. (2023).
On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.
Advanced Quantum Technologies. https://doi.org/10.1002/qute.202300142
bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On‐Demand
Indistinguishable and Entangled Photons Using Tailored Cavity Designs}, DOI={10.1002/qute.202300142}, journal={Advanced
Quantum Technologies}, publisher={Wiley}, author={Bauch, David and Siebert, Dustin
and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }'
chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher.
“On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.”
Advanced Quantum Technologies, 2023. https://doi.org/10.1002/qute.202300142.
ieee: 'D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On‐Demand
Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” Advanced
Quantum Technologies, 2023, doi: 10.1002/qute.202300142.'
mla: Bauch, David, et al. “On‐Demand Indistinguishable and Entangled Photons Using
Tailored Cavity Designs.” Advanced Quantum Technologies, Wiley, 2023, doi:10.1002/qute.202300142.
short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, Advanced Quantum
Technologies (2023).
date_created: 2023-11-03T10:07:38Z
date_updated: 2023-12-21T10:41:17Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
doi: 10.1002/qute.202300142
keyword:
- tet_topic_qd
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://onlinelibrary.wiley.com/doi/10.1002/qute.202300142
oa: '1'
project:
- _id: '173'
grant_number: '231447078'
name: 'TRR 142 - C09: TRR 142 - Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch
bei Telekom Wellenlängen (C09*)'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
eines photonischen Quantensystems (B06*)'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Advanced Quantum Technologies
publication_identifier:
issn:
- 2511-9044
- 2511-9044
publication_status: published
publisher: Wiley
related_material:
record:
- id: '43246'
relation: earlier_version
status: public
status: public
title: On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs
type: journal_article
user_id: '158'
year: '2023'
...
---
_id: '43246'
abstract:
- lang: eng
text: The biexciton-exciton emission cascade commonly used in quantum-dot systems
to generate polarization entanglement yields photons with intrinsically limited
indistinguishability. In the present work we focus on the generation of pairs
of photons with high degrees of polarization entanglement and simultaneously high
indistinguishibility. We achieve this goal by selectively reducing the biexciton
lifetime with an optical resonator. We demonstrate that a suitably tailored circular
Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement
of biexciton emission paired with spectrally broad photon extraction and two-fold
degenerate optical modes. Our in-depth theoretical study combines (i) the optimization
of realistic photonic structures solving Maxwell's equations from which model
parameters are extracted as input for (ii) microscopic simulations of quantum-dot
cavity excitation dynamics with full access to photon properties. We report non-trivial
dependencies on system parameters and use the predictive power of our combined
theoretical approach to determine the optimal range of Purcell enhancement that
maximizes indistinguishability and entanglement to near unity values in the telecom
C-band at $1550\,\mathrm{nm}$.
author:
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Dustin
full_name: Siebert, Dustin
last_name: Siebert
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On-demand indistinguishable
and entangled photons at telecom frequencies using tailored cavity designs. Published
online 2023.
apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., & Schumacher, S. (2023).
On-demand indistinguishable and entangled photons at telecom frequencies using
tailored cavity designs.
bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On-demand
indistinguishable and entangled photons at telecom frequencies using tailored
cavity designs}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus and
Förstner, Jens and Schumacher, Stefan}, year={2023} }'
chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher.
“On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using
Tailored Cavity Designs,” 2023.
ieee: D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On-demand
indistinguishable and entangled photons at telecom frequencies using tailored
cavity designs.” 2023.
mla: Bauch, David, et al. On-Demand Indistinguishable and Entangled Photons at
Telecom Frequencies Using Tailored Cavity Designs. 2023.
short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, (2023).
date_created: 2023-03-31T13:22:05Z
date_updated: 2023-12-21T10:41:17Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
- _id: '15'
- _id: '35'
- _id: '170'
- _id: '297'
keyword:
- tet_topic_phc
- tet_topic_qd
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2303.13871.pdf
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '173'
grant_number: '231447078'
name: 'TRR 142 - C09: TRR 142 - Subproject C09'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Subproject B06'
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
related_material:
record:
- id: '48599'
relation: later_version
status: public
status: public
title: On-demand indistinguishable and entangled photons at telecom frequencies using
tailored cavity designs
type: preprint
user_id: '16199'
year: '2023'
...
---
_id: '49890'
abstract:
- lang: eng
text: In this paper, the influence of the environment on an inductive location system
is analyzed. In the inductive location method, high frequency magnetic fields
generated by planar coils lead to induction in other coils, which is used for
localization analysis. Magnetic fields are not affected by changes in the dielectric
properties of the environment, which is an advantage over other localization methods.
However, electrical material parameters can still affect the localization results
by indirect effects. For this reason, in this publication the influence will be
investigated using real material parameters and their effects on the localization
will be considered, so that the robustness and the limits of the inductive localization
can be evaluated.
author:
- first_name: Sven
full_name: Lange, Sven
id: '38240'
last_name: Lange
- first_name: Ulrich
full_name: Hilleringmann, Ulrich
id: '20179'
last_name: Hilleringmann
- first_name: Christian
full_name: Hedayat, Christian
last_name: Hedayat
- first_name: Harald
full_name: Kuhn, Harald
last_name: Kuhn
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Lange S, Hilleringmann U, Hedayat C, Kuhn H, Förstner J. Characterization
of Various Environmental Influences on the Inductive Localization. In: 2023
IEEE Conference on Antenna Measurements and Applications (CAMA). IEEE; 2023.
doi:10.1109/cama57522.2023.10352780'
apa: Lange, S., Hilleringmann, U., Hedayat, C., Kuhn, H., & Förstner, J. (2023).
Characterization of Various Environmental Influences on the Inductive Localization.
2023 IEEE Conference on Antenna Measurements and Applications (CAMA). 2023
IEEE Conference on Antenna Measurements and Applications (CAMA), Genoa, Italy
. https://doi.org/10.1109/cama57522.2023.10352780
bibtex: '@inproceedings{Lange_Hilleringmann_Hedayat_Kuhn_Förstner_2023, place={Genoa,
Italy }, title={Characterization of Various Environmental Influences on the Inductive
Localization}, DOI={10.1109/cama57522.2023.10352780},
booktitle={2023 IEEE Conference on Antenna Measurements and Applications (CAMA)},
publisher={IEEE}, author={Lange, Sven and Hilleringmann, Ulrich and Hedayat, Christian
and Kuhn, Harald and Förstner, Jens}, year={2023} }'
chicago: 'Lange, Sven, Ulrich Hilleringmann, Christian Hedayat, Harald Kuhn, and
Jens Förstner. “Characterization of Various Environmental Influences on the Inductive
Localization.” In 2023 IEEE Conference on Antenna Measurements and Applications
(CAMA). Genoa, Italy : IEEE, 2023. https://doi.org/10.1109/cama57522.2023.10352780.'
ieee: 'S. Lange, U. Hilleringmann, C. Hedayat, H. Kuhn, and J. Förstner, “Characterization
of Various Environmental Influences on the Inductive Localization,” presented
at the 2023 IEEE Conference on Antenna Measurements and Applications (CAMA), Genoa,
Italy , 2023, doi: 10.1109/cama57522.2023.10352780.'
mla: Lange, Sven, et al. “Characterization of Various Environmental Influences on
the Inductive Localization.” 2023 IEEE Conference on Antenna Measurements and
Applications (CAMA), IEEE, 2023, doi:10.1109/cama57522.2023.10352780.
short: 'S. Lange, U. Hilleringmann, C. Hedayat, H. Kuhn, J. Förstner, in: 2023 IEEE
Conference on Antenna Measurements and Applications (CAMA), IEEE, Genoa, Italy
, 2023.'
conference:
end_date: 2023-11-17
location: 'Genoa, Italy '
name: 2023 IEEE Conference on Antenna Measurements and Applications (CAMA)
start_date: 2023-11-15
date_created: 2023-12-20T08:36:58Z
date_updated: 2023-12-21T09:51:11Z
department:
- _id: '59'
- _id: '61'
- _id: '485'
doi: 10.1109/cama57522.2023.10352780
keyword:
- Planar coils
- inductive locating
- magnetic fields
- environmental influences
- eddy currents
- tet_topic_hf
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/document/10352780
place: 'Genoa, Italy '
publication: 2023 IEEE Conference on Antenna Measurements and Applications (CAMA)
publication_identifier:
eisbn:
- 979-8-3503-2304-7
publication_status: published
publisher: IEEE
status: public
title: Characterization of Various Environmental Influences on the Inductive Localization
type: conference
user_id: '158'
year: '2023'
...
---
_id: '50012'
abstract:
- lang: eng
text: Silicon photonics, in conjunction with complementary metal-oxide-semiconductor
(CMOS) fabrication, has greatly enhanced the development of integrated optical
phased arrays. This facilitates a dynamic control of light in a compact form factor
that enables the synthesis of arbitrary complex wavefronts in the infrared spectrum.
We numerically demonstrate a large-scale two-dimensional silicon-based optical
phased array (OPA) composed of nanoantennas with circular gratings that are balanced
in power and aligned in phase, required for producing elegant radiation patterns
in the far-field. For a wavelength of 1.55 μm, we optimize two antennas for the
OPA exhibiting an upward radiation efficiency as high as 90%, with almost 6.8%
of optical power concentrated in the field of view. Additionally, we believe that
the proposed OPAs can be easily fabricated and would have the ability to generate
complex holographic images, rendering them an attractive candidate for a wide
range of applications like LiDAR sensors, optical trapping, optogenetic stimulation,
and augmented-reality displays.
author:
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Andreas
full_name: Strauch, Andreas
last_name: Strauch
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Farheen H, Strauch A, Scheytt JC, Myroshnychenko V, Förstner J. Optimized,
Highly Efficient Silicon Antennas for Optical Phased Arrays. Photonics and
Nanostructures - Fundamentals and Applications. 2023;58:101207. doi:10.1016/j.photonics.2023.101207
apa: Farheen, H., Strauch, A., Scheytt, J. C., Myroshnychenko, V., & Förstner,
J. (2023). Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays.
Photonics and Nanostructures - Fundamentals and Applications, 58,
101207. https://doi.org/10.1016/j.photonics.2023.101207
bibtex: '@article{Farheen_Strauch_Scheytt_Myroshnychenko_Förstner_2023, title={Optimized,
Highly Efficient Silicon Antennas for Optical Phased Arrays}, volume={58}, DOI={10.1016/j.photonics.2023.101207},
journal={Photonics and Nanostructures - Fundamentals and Applications}, publisher={Elsevier
BV}, author={Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and
Myroshnychenko, Viktor and Förstner, Jens}, year={2023}, pages={101207} }'
chicago: 'Farheen, Henna, Andreas Strauch, J. Christoph Scheytt, Viktor Myroshnychenko,
and Jens Förstner. “Optimized, Highly Efficient Silicon Antennas for Optical Phased
Arrays.” Photonics and Nanostructures - Fundamentals and Applications 58
(2023): 101207. https://doi.org/10.1016/j.photonics.2023.101207.'
ieee: 'H. Farheen, A. Strauch, J. C. Scheytt, V. Myroshnychenko, and J. Förstner,
“Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays,” Photonics
and Nanostructures - Fundamentals and Applications, vol. 58, p. 101207, 2023,
doi: 10.1016/j.photonics.2023.101207.'
mla: Farheen, Henna, et al. “Optimized, Highly Efficient Silicon Antennas for Optical
Phased Arrays.” Photonics and Nanostructures - Fundamentals and Applications,
vol. 58, Elsevier BV, 2023, p. 101207, doi:10.1016/j.photonics.2023.101207.
short: H. Farheen, A. Strauch, J.C. Scheytt, V. Myroshnychenko, J. Förstner, Photonics
and Nanostructures - Fundamentals and Applications 58 (2023) 101207.
date_created: 2023-12-21T09:30:03Z
date_updated: 2023-12-21T09:48:39Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '58'
doi: 10.1016/j.photonics.2023.101207
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2023-12-21T09:34:17Z
date_updated: 2023-12-21T09:34:17Z
file_id: '50013'
file_name: 2ß23-12 Farheen - PNFA - Optimized, highly efficient silicon antennas
for optical phased arrays.pdf
file_size: 3339442
relation: main_file
file_date_updated: 2023-12-21T09:34:17Z
has_accepted_license: '1'
intvolume: ' 58'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
oa: '1'
page: '101207'
project:
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
eines photonischen Quantensystems (B06*)'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Photonics and Nanostructures - Fundamentals and Applications
publication_identifier:
issn:
- 1569-4410
publication_status: published
publisher: Elsevier BV
related_material:
link:
- relation: research_data
url: https://doi.org/10.5281/zenodo.10044122
status: public
title: Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays
type: journal_article
user_id: '158'
volume: 58
year: '2023'
...
---
_id: '45596'
abstract:
- lang: eng
text: Dielectric metasurfaces provide a unique platform for efficient harmonic generation
and optical wavefront manipulation at the nanoscale. Tailoring phase and amplitude
of a nonlinearly generated wave with a high emission efficiency using resonance-based
metasurfaces is a challenging task that often requires state-of-the-art numerical
methods. Here, we propose a simple yet effective approach combining a sampling
method with a Monte Carlo approach to design the third-harmonic wavefront generated
by all-dielectric metasurfaces composed of elliptical silicon nanodisks. Using
this approach, we theoretically demonstrate the full nonlinear 2π phase control
with a uniform and highest possible amplitude in the considered parameter space,
allowing us to design metasurfaces operating as third harmonic beam deflectors
capable of steering light into a desired direction with high emission efficiency.
The TH beam deflection with a record calculated average conversion efficiency
of 1.2 × 10–1 W–2 is achieved. We anticipate that the proposed approach will be
widely applied as alternative to commonly used optimization algorithms with higher
complexity and implementation effort for the design of metasurfaces with other
holographic functionalities.
author:
- first_name: David
full_name: Hähnel, David
last_name: Hähnel
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
citation:
ama: Hähnel D, Förstner J, Myroshnychenko V. Efficient Modeling and Tailoring of
Nonlinear Wavefronts in Dielectric Metasurfaces. ACS Photonics. Published
online 2023. doi:10.1021/acsphotonics.2c01967
apa: Hähnel, D., Förstner, J., & Myroshnychenko, V. (2023). Efficient Modeling
and Tailoring of Nonlinear Wavefronts in Dielectric Metasurfaces. ACS Photonics.
https://doi.org/10.1021/acsphotonics.2c01967
bibtex: '@article{Hähnel_Förstner_Myroshnychenko_2023, title={Efficient Modeling
and Tailoring of Nonlinear Wavefronts in Dielectric Metasurfaces}, DOI={10.1021/acsphotonics.2c01967},
journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Hähnel,
David and Förstner, Jens and Myroshnychenko, Viktor}, year={2023} }'
chicago: Hähnel, David, Jens Förstner, and Viktor Myroshnychenko. “Efficient Modeling
and Tailoring of Nonlinear Wavefronts in Dielectric Metasurfaces.” ACS Photonics,
2023. https://doi.org/10.1021/acsphotonics.2c01967.
ieee: 'D. Hähnel, J. Förstner, and V. Myroshnychenko, “Efficient Modeling and Tailoring
of Nonlinear Wavefronts in Dielectric Metasurfaces,” ACS Photonics, 2023,
doi: 10.1021/acsphotonics.2c01967.'
mla: Hähnel, David, et al. “Efficient Modeling and Tailoring of Nonlinear Wavefronts
in Dielectric Metasurfaces.” ACS Photonics, American Chemical Society (ACS),
2023, doi:10.1021/acsphotonics.2c01967.
short: D. Hähnel, J. Förstner, V. Myroshnychenko, ACS Photonics (2023).
date_created: 2023-06-13T09:43:25Z
date_updated: 2023-06-13T09:49:12Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1021/acsphotonics.2c01967
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2023-06-13T09:48:17Z
date_updated: 2023-06-13T09:48:17Z
file_id: '45597'
file_name: 2023-06 Hähnel - ACS Photonics - Efficient Modeling and Tailoring of
Nonlinear Wavefronts in Dielectric Metasurfaces.pdf
file_size: 5382111
relation: main_file
file_date_updated: 2023-06-13T09:48:17Z
has_accepted_license: '1'
keyword:
- tet_topic_meta
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
eines photonischen Quantensystems (B06*)'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '75'
grant_number: '231447078'
name: 'TRR 142 - C05: TRR 142 - Nichtlineare optische Oberflächen basierend auf
ZnO-plasmonischen Hybrid-Nanostrukturen (C05)'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: ACS Photonics
publication_identifier:
issn:
- 2330-4022
- 2330-4022
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Efficient Modeling and Tailoring of Nonlinear Wavefronts in Dielectric Metasurfaces
type: journal_article
user_id: '158'
year: '2023'
...
---
_id: '44097'
abstract:
- lang: eng
text: We present strong enhancement of third harmonic generation in an amorphous
silicon metasurface consisting of elliptical nano resonators. We show that this
enhancement originates from a new type of multi-mode Fano mechanism. These ‘Super-Fano’
resonances are investigated numerically in great detail using full-wave simulations.
The theoretically predicted behavior of the metasurface is experimentally verified
by linear and nonlinear transmission spectroscopy. Moreover, quantitative nonlinear
measurements are performed, in which an absolute conversion efficiency as high
as ηmax ≈ 2.8 × 10−7 a peak power intensity of 1.2 GW cm−2 is found. Compared
to an unpatterned silicon film of the same thickness amplification factors of
up to ~900 are demonstrated. Our results pave the way to exploiting a strong Fano-type
multi-mode coupling in metasurfaces for high THG in potential applications.
article_type: original
author:
- first_name: David
full_name: Hähnel, David
last_name: Hähnel
- first_name: Christian
full_name: Golla, Christian
last_name: Golla
- first_name: Maximilian
full_name: Albert, Maximilian
last_name: Albert
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
citation:
ama: 'Hähnel D, Golla C, Albert M, et al. A multi-mode super-fano mechanism for
enhanced third harmonic generation in silicon metasurfaces. Light: Science
& Applications. 2023;12(1):97. doi:https://doi.org/10.1038/s41377-023-01134-1'
apa: 'Hähnel, D., Golla, C., Albert, M., Zentgraf, T., Myroshnychenko, V., Förstner,
J., & Meier, C. (2023). A multi-mode super-fano mechanism for enhanced third
harmonic generation in silicon metasurfaces. Light: Science & Applications,
12(1), 97. https://doi.org/10.1038/s41377-023-01134-1'
bibtex: '@article{Hähnel_Golla_Albert_Zentgraf_Myroshnychenko_Förstner_Meier_2023,
title={A multi-mode super-fano mechanism for enhanced third harmonic generation
in silicon metasurfaces}, volume={12}, DOI={https://doi.org/10.1038/s41377-023-01134-1},
number={1}, journal={Light: Science & Applications}, publisher={Springer Nature},
author={Hähnel, David and Golla, Christian and Albert, Maximilian and Zentgraf,
Thomas and Myroshnychenko, Viktor and Förstner, Jens and Meier, Cedrik}, year={2023},
pages={97} }'
chicago: 'Hähnel, David, Christian Golla, Maximilian Albert, Thomas Zentgraf, Viktor
Myroshnychenko, Jens Förstner, and Cedrik Meier. “A Multi-Mode Super-Fano Mechanism
for Enhanced Third Harmonic Generation in Silicon Metasurfaces.” Light: Science
& Applications 12, no. 1 (2023): 97. https://doi.org/10.1038/s41377-023-01134-1.'
ieee: 'D. Hähnel et al., “A multi-mode super-fano mechanism for enhanced
third harmonic generation in silicon metasurfaces,” Light: Science & Applications,
vol. 12, no. 1, p. 97, 2023, doi: https://doi.org/10.1038/s41377-023-01134-1.'
mla: 'Hähnel, David, et al. “A Multi-Mode Super-Fano Mechanism for Enhanced Third
Harmonic Generation in Silicon Metasurfaces.” Light: Science & Applications,
vol. 12, no. 1, Springer Nature, 2023, p. 97, doi:https://doi.org/10.1038/s41377-023-01134-1.'
short: 'D. Hähnel, C. Golla, M. Albert, T. Zentgraf, V. Myroshnychenko, J. Förstner,
C. Meier, Light: Science & Applications 12 (2023) 97.'
date_created: 2023-04-21T09:45:07Z
date_updated: 2023-04-21T10:04:05Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: https://doi.org/10.1038/s41377-023-01134-1
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2023-04-21T10:00:27Z
date_updated: 2023-04-21T10:00:27Z
file_id: '44098'
file_name: 2023-04 Hähnel - LSA - Multimode Fano THG.pdf
file_size: 2088874
relation: main_file
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2023-04-21T10:03:30Z
date_updated: 2023-04-21T10:03:30Z
file_id: '44099'
file_name: 2023-04 Hähnel - LSA - Multimode Fano THG (supplementary information).pdf
file_size: 986743
relation: supplementary_material
file_date_updated: 2023-04-21T10:03:30Z
has_accepted_license: '1'
intvolume: ' 12'
issue: '1'
keyword:
- tet_topic_meta
language:
- iso: eng
oa: '1'
page: '97'
publication: 'Light: Science & Applications'
publication_identifier:
issn:
- 2047-7538
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: A multi-mode super-fano mechanism for enhanced third harmonic generation in
silicon metasurfaces
type: journal_article
user_id: '158'
volume: 12
year: '2023'
...
---
_id: '43245'
abstract:
- lang: eng
text: High-contrast slab waveguide Bragg gratings with 1D periodicity are investigated.
For specific oblique excitation by semi-guided waves at sufficiently high angles
of incidence, the idealized structures do not exhibit any radiative losses, such
that reflectance and transmittance for the single port mode add strictly up to
one. We consider a series of symmetric, fully and partly etched finite gratings,
for parameters found in integrated silicon photonics. These can act as spectral
filters with a reasonably flattop response. Apodization can lead to more box shaped
reflectance and transmittance spectra. Together with a narrowband Fabry–Perot
filter, these configurations are characterized by reflection bands, or transmittance
peaks, with widths that span three orders of magnitude.
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Farheen H, Förstner J. How to suppress radiative losses in high-contrast
integrated Bragg gratings. Journal of the Optical Society of America B.
2023;40(4):862. doi:10.1364/josab.485725
apa: Hammer, M., Farheen, H., & Förstner, J. (2023). How to suppress radiative
losses in high-contrast integrated Bragg gratings. Journal of the Optical Society
of America B, 40(4), 862. https://doi.org/10.1364/josab.485725
bibtex: '@article{Hammer_Farheen_Förstner_2023, title={How to suppress radiative
losses in high-contrast integrated Bragg gratings}, volume={40}, DOI={10.1364/josab.485725},
number={4}, journal={Journal of the Optical Society of America B}, publisher={Optica
Publishing Group}, author={Hammer, Manfred and Farheen, Henna and Förstner, Jens},
year={2023}, pages={862} }'
chicago: 'Hammer, Manfred, Henna Farheen, and Jens Förstner. “How to Suppress Radiative
Losses in High-Contrast Integrated Bragg Gratings.” Journal of the Optical
Society of America B 40, no. 4 (2023): 862. https://doi.org/10.1364/josab.485725.'
ieee: 'M. Hammer, H. Farheen, and J. Förstner, “How to suppress radiative losses
in high-contrast integrated Bragg gratings,” Journal of the Optical Society
of America B, vol. 40, no. 4, p. 862, 2023, doi: 10.1364/josab.485725.'
mla: Hammer, Manfred, et al. “How to Suppress Radiative Losses in High-Contrast
Integrated Bragg Gratings.” Journal of the Optical Society of America B,
vol. 40, no. 4, Optica Publishing Group, 2023, p. 862, doi:10.1364/josab.485725.
short: M. Hammer, H. Farheen, J. Förstner, Journal of the Optical Society of America
B 40 (2023) 862.
date_created: 2023-03-31T13:04:43Z
date_updated: 2023-04-20T10:03:40Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/josab.485725
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2023-03-31T13:14:59Z
date_updated: 2023-03-31T13:14:59Z
file_id: '43247'
file_name: ogr-afterreview.pdf
file_size: 1982311
relation: main_file
file_date_updated: 2023-03-31T13:14:59Z
has_accepted_license: '1'
intvolume: ' 40'
issue: '4'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: '862'
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '167'
name: 'TRR 142 - B06: TRR 142 - Subproject B06'
publication: Journal of the Optical Society of America B
publication_identifier:
issn:
- 0740-3224
- 1520-8540
publication_status: published
publisher: Optica Publishing Group
status: public
title: How to suppress radiative losses in high-contrast integrated Bragg gratings
type: journal_article
user_id: '158'
volume: 40
year: '2023'
...
---
_id: '43052'
abstract:
- lang: eng
text: We demonstrate a large-scale two dimensional silicon-based optical phased
array (OPA) composed of nanoantennas with circular gratings that are balanced
in power and aligned in phase, required for producing desired radiation patterns
in the far-field. The OPAs are numerically optimized to have an upward efficiency
of up to 90%, targeting radiation concentration mainly in the field of view. We
envision that our OPAs have the ability of generating complex holographic images,
rendering them an attractive candidate for a wide range of applications like LiDAR
sensors, optical trapping, optogenetic stimulation and augmented-reality displays.
author:
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Andreas
full_name: Strauch, Andreas
last_name: Strauch
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: https://orcid.org/0000-0002-5950-6618
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Farheen H, Strauch A, Scheytt JC, Myroshnychenko V, Förstner J. Optimized
silicon antennas for optical phased arrays. In: García-Blanco SM, Cheben P, eds.
Integrated Optics: Devices, Materials, and Technologies XXVII. SPIE; 2023:124241D.
doi:10.1117/12.2658716'
apa: 'Farheen, H., Strauch, A., Scheytt, J. C., Myroshnychenko, V., & Förstner,
J. (2023). Optimized silicon antennas for optical phased arrays. In S. M. García-Blanco
& P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies
XXVII (p. 124241D). SPIE. https://doi.org/10.1117/12.2658716'
bibtex: '@inproceedings{Farheen_Strauch_Scheytt_Myroshnychenko_Förstner_2023, title={Optimized
silicon antennas for optical phased arrays}, DOI={10.1117/12.2658716},
booktitle={Integrated Optics: Devices, Materials, and Technologies XXVII}, publisher={SPIE},
author={Farheen, Henna and Strauch, Andreas and Scheytt, J. Christoph and Myroshnychenko,
Viktor and Förstner, Jens}, editor={García-Blanco, Sonia M. and Cheben, Pavel},
year={2023}, pages={124241D} }'
chicago: 'Farheen, Henna, Andreas Strauch, J. Christoph Scheytt, Viktor Myroshnychenko,
and Jens Förstner. “Optimized Silicon Antennas for Optical Phased Arrays.” In
Integrated Optics: Devices, Materials, and Technologies XXVII, edited by
Sonia M. García-Blanco and Pavel Cheben, 124241D. SPIE, 2023. https://doi.org/10.1117/12.2658716.'
ieee: 'H. Farheen, A. Strauch, J. C. Scheytt, V. Myroshnychenko, and J. Förstner,
“Optimized silicon antennas for optical phased arrays,” in Integrated Optics:
Devices, Materials, and Technologies XXVII, 2023, p. 124241D, doi: 10.1117/12.2658716.'
mla: 'Farheen, Henna, et al. “Optimized Silicon Antennas for Optical Phased Arrays.”
Integrated Optics: Devices, Materials, and Technologies XXVII, edited by
Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241D, doi:10.1117/12.2658716.'
short: 'H. Farheen, A. Strauch, J.C. Scheytt, V. Myroshnychenko, J. Förstner, in:
S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and
Technologies XXVII, SPIE, 2023, p. 124241D.'
date_created: 2023-03-21T12:35:18Z
date_updated: 2023-03-22T20:53:50Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1117/12.2658716
editor:
- first_name: Sonia M.
full_name: García-Blanco, Sonia M.
last_name: García-Blanco
- first_name: Pavel
full_name: Cheben, Pavel
last_name: Cheben
file:
- access_level: request
content_type: application/pdf
creator: fossie
date_created: 2023-03-22T07:41:49Z
date_updated: 2023-03-22T20:53:11Z
file_id: '43055'
file_name: 2023-01 Poster Photonics West Henna OPA_A0.pdf
file_size: 1747396
relation: main_file
file_date_updated: 2023-03-22T20:53:11Z
has_accepted_license: '1'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
page: '124241D '
publication: 'Integrated Optics: Devices, Materials, and Technologies XXVII'
publication_status: published
publisher: SPIE
status: public
title: Optimized silicon antennas for optical phased arrays
type: conference
user_id: '14931'
year: '2023'
...
---
_id: '43051'
abstract:
- lang: eng
text: We demonstrate the numerical and experimental realization of optimized optical
traveling-wave antennas made of low-loss dielectric materials. These antennas
exhibit highly directive radiation patterns and our studies reveal that this nature
comes from two dominant guided TE modes excited in the waveguide-like director
of the antenna, in addition to the leaky modes. The optimized antennas possess
a broadband nature and have a nearunity radiation efficiency at an operational
wavelength of 780 nm. Compared to the previously studied plasmonic antennas for
photon emission, our all-dielectric approach demonstrates a new class of highly
directional, low-loss, and broadband optical antennas.
author:
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Lok-Yee
full_name: Yan, Lok-Yee
last_name: Yan
- first_name: Till
full_name: Leuteritz, Till
last_name: Leuteritz
- first_name: Siqi
full_name: Qiao, Siqi
last_name: Qiao
- first_name: Florian
full_name: Spreyer, Florian
last_name: Spreyer
- first_name: Christian
full_name: Schlickriede, Christian
last_name: Schlickriede
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Christof
full_name: Eigner, Christof
last_name: Eigner
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Stefan
full_name: Linden, Stefan
last_name: Linden
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Farheen H, Yan L-Y, Leuteritz T, et al. Tailoring the directive nature of
optical waveguide antennas. In: García-Blanco SM, Cheben P, eds. Integrated
Optics: Devices, Materials, and Technologies XXVII. SPIE; 2023:124241E. doi:10.1117/12.2658921'
apa: 'Farheen, H., Yan, L.-Y., Leuteritz, T., Qiao, S., Spreyer, F., Schlickriede,
C., Quiring, V., Eigner, C., Silberhorn, C., Zentgraf, T., Linden, S., Myroshnychenko,
V., & Förstner, J. (2023). Tailoring the directive nature of optical waveguide
antennas. In S. M. García-Blanco & P. Cheben (Eds.), Integrated Optics:
Devices, Materials, and Technologies XXVII (p. 124241E). SPIE. https://doi.org/10.1117/12.2658921'
bibtex: '@inproceedings{Farheen_Yan_Leuteritz_Qiao_Spreyer_Schlickriede_Quiring_Eigner_Silberhorn_Zentgraf_et
al._2023, title={Tailoring the directive nature of optical waveguide antennas},
DOI={10.1117/12.2658921}, booktitle={Integrated
Optics: Devices, Materials, and Technologies XXVII}, publisher={SPIE}, author={Farheen,
Henna and Yan, Lok-Yee and Leuteritz, Till and Qiao, Siqi and Spreyer, Florian
and Schlickriede, Christian and Quiring, Viktor and Eigner, Christof and Silberhorn,
Christine and Zentgraf, Thomas and et al.}, editor={García-Blanco, Sonia M. and
Cheben, Pavel}, year={2023}, pages={124241E} }'
chicago: 'Farheen, Henna, Lok-Yee Yan, Till Leuteritz, Siqi Qiao, Florian Spreyer,
Christian Schlickriede, Viktor Quiring, et al. “Tailoring the Directive Nature
of Optical Waveguide Antennas.” In Integrated Optics: Devices, Materials, and
Technologies XXVII, edited by Sonia M. García-Blanco and Pavel Cheben, 124241E.
SPIE, 2023. https://doi.org/10.1117/12.2658921.'
ieee: 'H. Farheen et al., “Tailoring the directive nature of optical waveguide
antennas,” in Integrated Optics: Devices, Materials, and Technologies XXVII,
2023, p. 124241E, doi: 10.1117/12.2658921.'
mla: 'Farheen, Henna, et al. “Tailoring the Directive Nature of Optical Waveguide
Antennas.” Integrated Optics: Devices, Materials, and Technologies XXVII,
edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241E, doi:10.1117/12.2658921.'
short: 'H. Farheen, L.-Y. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede,
V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko,
J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices,
Materials, and Technologies XXVII, SPIE, 2023, p. 124241E.'
date_created: 2023-03-21T12:28:31Z
date_updated: 2023-03-22T09:26:25Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1117/12.2658921
editor:
- first_name: Sonia M.
full_name: García-Blanco, Sonia M.
last_name: García-Blanco
- first_name: Pavel
full_name: Cheben, Pavel
last_name: Cheben
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2023-03-22T09:25:57Z
date_updated: 2023-03-22T09:25:57Z
file_id: '43062'
file_name: 2023-01 Poster Photonics West Henna OWA_A0.pdf
file_size: 1426599
relation: main_file
file_date_updated: 2023-03-22T09:25:57Z
has_accepted_license: '1'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
page: 124241E
publication: 'Integrated Optics: Devices, Materials, and Technologies XXVII'
publication_status: published
publisher: SPIE
status: public
title: Tailoring the directive nature of optical waveguide antennas
type: conference
user_id: '158'
year: '2023'
...
---
_id: '43018'
article_number: '108557'
author:
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
citation:
ama: Alhaddad S, Förstner J, Grynko Y. Numerical study of light backscattering from
layers of absorbing irregular particles larger than the wavelength. Journal
of Quantitative Spectroscopy and Radiative Transfer. 2023;302. doi:10.1016/j.jqsrt.2023.108557
apa: Alhaddad, S., Förstner, J., & Grynko, Y. (2023). Numerical study of light
backscattering from layers of absorbing irregular particles larger than the wavelength.
Journal of Quantitative Spectroscopy and Radiative Transfer, 302,
Article 108557. https://doi.org/10.1016/j.jqsrt.2023.108557
bibtex: '@article{Alhaddad_Förstner_Grynko_2023, title={Numerical study of light
backscattering from layers of absorbing irregular particles larger than the wavelength},
volume={302}, DOI={10.1016/j.jqsrt.2023.108557},
number={108557}, journal={Journal of Quantitative Spectroscopy and Radiative Transfer},
publisher={Elsevier BV}, author={Alhaddad, Samer and Förstner, Jens and Grynko,
Yevgen}, year={2023} }'
chicago: Alhaddad, Samer, Jens Förstner, and Yevgen Grynko. “Numerical Study of
Light Backscattering from Layers of Absorbing Irregular Particles Larger than
the Wavelength.” Journal of Quantitative Spectroscopy and Radiative Transfer
302 (2023). https://doi.org/10.1016/j.jqsrt.2023.108557.
ieee: 'S. Alhaddad, J. Förstner, and Y. Grynko, “Numerical study of light backscattering
from layers of absorbing irregular particles larger than the wavelength,” Journal
of Quantitative Spectroscopy and Radiative Transfer, vol. 302, Art. no. 108557,
2023, doi: 10.1016/j.jqsrt.2023.108557.'
mla: Alhaddad, Samer, et al. “Numerical Study of Light Backscattering from Layers
of Absorbing Irregular Particles Larger than the Wavelength.” Journal of Quantitative
Spectroscopy and Radiative Transfer, vol. 302, 108557, Elsevier BV, 2023,
doi:10.1016/j.jqsrt.2023.108557.
short: S. Alhaddad, J. Förstner, Y. Grynko, Journal of Quantitative Spectroscopy
and Radiative Transfer 302 (2023).
date_created: 2023-03-14T12:32:54Z
date_updated: 2023-03-15T17:36:13Z
ddc:
- '530'
department:
- _id: '61'
doi: 10.1016/j.jqsrt.2023.108557
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2023-03-15T15:58:15Z
date_updated: 2023-03-15T15:58:15Z
file_id: '43028'
file_name: 2023-03 Alhaddad - JQSRT - Numerical study of light backscattering from
layers of absorbing particles larger than the wavelength.pdf
file_size: 1508833
relation: main_file
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2023-03-15T17:35:29Z
date_updated: 2023-03-15T17:35:29Z
file_id: '43029'
file_name: 2023-03 Alhaddad - JQSRT - Numerical study of light backscattering from
layers of absorbing particles larger than the wavelength (accepted manuscript).pdf
file_size: 4254386
relation: main_file
file_date_updated: 2023-03-15T17:35:29Z
has_accepted_license: '1'
intvolume: ' 302'
keyword:
- tet_topic_scattering
language:
- iso: eng
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Journal of Quantitative Spectroscopy and Radiative Transfer
publication_identifier:
issn:
- 0022-4073
publication_status: published
publisher: Elsevier BV
status: public
title: Numerical study of light backscattering from layers of absorbing irregular
particles larger than the wavelength
type: journal_article
user_id: '158'
volume: 302
year: '2023'
...
---
_id: '33509'
abstract:
- lang: eng
text: In this publication a novel method for far-field prediction from magnetic
Huygens box data based on the boundary element method (BEM) is presented. Two
examples are considered for the validation of this method. The first example represents
an electric dipole so that the obtained calculations can be compared to an analytical
solution. As a second example, a printed circuit board is considered and the calculated
far-field is compared to a fullwave simulation. In both cases, the calculations
for different field integral equations are under comparison, and the results indicate
that the presented method performs very well with a combined field integral equation,
for the specified problem, when only magnetic Huygens box data is given.
author:
- first_name: Christoph
full_name: Marschalt, Christoph
last_name: Marschalt
- first_name: Dominik
full_name: Schroder, Dominik
last_name: Schroder
- first_name: Sven
full_name: Lange, Sven
id: '38240'
last_name: Lange
- first_name: Ulrich
full_name: Hilleringmann, Ulrich
id: '20179'
last_name: Hilleringmann
- first_name: Christian
full_name: Hedayat, Christian
last_name: Hedayat
- first_name: Harald
full_name: Kuhn, Harald
last_name: Kuhn
- first_name: Denis
full_name: Sievers, Denis
last_name: Sievers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Marschalt C, Schroder D, Lange S, et al. Far-field Calculation from magnetic
Huygens Box Data using the Boundary Element Method. In: 2022 Smart Systems
Integration (SSI). IEEE; 2022. doi:10.1109/ssi56489.2022.9901431'
apa: Marschalt, C., Schroder, D., Lange, S., Hilleringmann, U., Hedayat, C., Kuhn,
H., Sievers, D., & Förstner, J. (2022). Far-field Calculation from magnetic
Huygens Box Data using the Boundary Element Method. 2022 Smart Systems Integration
(SSI). 2022 Smart Systems Integration (SSI), Grenoble, France. https://doi.org/10.1109/ssi56489.2022.9901431
bibtex: '@inproceedings{Marschalt_Schroder_Lange_Hilleringmann_Hedayat_Kuhn_Sievers_Förstner_2022,
place={Grenoble, France}, title={Far-field Calculation from magnetic Huygens Box
Data using the Boundary Element Method}, DOI={10.1109/ssi56489.2022.9901431},
booktitle={2022 Smart Systems Integration (SSI)}, publisher={IEEE}, author={Marschalt,
Christoph and Schroder, Dominik and Lange, Sven and Hilleringmann, Ulrich and
Hedayat, Christian and Kuhn, Harald and Sievers, Denis and Förstner, Jens}, year={2022}
}'
chicago: 'Marschalt, Christoph, Dominik Schroder, Sven Lange, Ulrich Hilleringmann,
Christian Hedayat, Harald Kuhn, Denis Sievers, and Jens Förstner. “Far-Field Calculation
from Magnetic Huygens Box Data Using the Boundary Element Method.” In 2022
Smart Systems Integration (SSI). Grenoble, France: IEEE, 2022. https://doi.org/10.1109/ssi56489.2022.9901431.'
ieee: 'C. Marschalt et al., “Far-field Calculation from magnetic Huygens
Box Data using the Boundary Element Method,” presented at the 2022 Smart Systems
Integration (SSI), Grenoble, France, 2022, doi: 10.1109/ssi56489.2022.9901431.'
mla: Marschalt, Christoph, et al. “Far-Field Calculation from Magnetic Huygens Box
Data Using the Boundary Element Method.” 2022 Smart Systems Integration (SSI),
IEEE, 2022, doi:10.1109/ssi56489.2022.9901431.
short: 'C. Marschalt, D. Schroder, S. Lange, U. Hilleringmann, C. Hedayat, H. Kuhn,
D. Sievers, J. Förstner, in: 2022 Smart Systems Integration (SSI), IEEE, Grenoble,
France, 2022.'
conference:
end_date: 2022-04-28
location: Grenoble, France
name: 2022 Smart Systems Integration (SSI)
start_date: 2022-04-27
date_created: 2022-10-04T11:31:43Z
date_updated: 2023-10-31T07:40:54Z
department:
- _id: '59'
- _id: '61'
- _id: '485'
doi: 10.1109/ssi56489.2022.9901431
keyword:
- Near-Field Scanning
- Huygens Box
- Boundary Element Method
- Method of Moments
- tet_topic_hf
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/document/9901431
place: Grenoble, France
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: 2022 Smart Systems Integration (SSI)
publication_identifier:
eisbn:
- 978-1-6654-8849-5
publication_status: published
publisher: IEEE
status: public
title: Far-field Calculation from magnetic Huygens Box Data using the Boundary Element
Method
type: conference
user_id: '20179'
year: '2022'
...
---
_id: '30389'
abstract:
- lang: eng
text: Online solvers for a series of standard 1-D or 2-D problems in integrated
optics will be discussed. Implemented on the basis of HTML/JavaScript/SVG with
core routines compiled from well tested C++-sources, the quasi-analytical algorithms
require a computational load that can be handled easily even by current mobile
devices. So far the series covers the 1-D guided modes of dielectric multilayer
slab waveguides and the oblique plane wave reflection from these, the modes of
rectangular channel waveguides (in an approximation of effective indices), bend
modes of curved multilayer slabs, whispering-gallery resonances (“Quasi-Normal-Modes”)
supported by circular dielectric cavities, the hybrid modes of circular multi-step-index
optical fibers, bound and leaky modes of 1-D complex multilayers, including plasmonic
surface modes, and, with restrictions, quite general rectangular scattering problems
in 2-D.
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
citation:
ama: 'Hammer M. Small-scale online simulations in guided-wave photonics. In: García-Blanco
SM, Cheben P, eds. Integrated Optics: Devices, Materials, and Technologies
XXVI. SPIE; 2022:1200414. doi:10.1117/12.2612208'
apa: 'Hammer, M. (2022). Small-scale online simulations in guided-wave photonics.
In S. M. García-Blanco & P. Cheben (Eds.), Integrated Optics: Devices,
Materials, and Technologies XXVI (p. 1200414). SPIE. https://doi.org/10.1117/12.2612208'
bibtex: '@inproceedings{Hammer_2022, title={Small-scale online simulations in guided-wave
photonics}, DOI={10.1117/12.2612208},
booktitle={Integrated Optics: Devices, Materials, and Technologies XXVI}, publisher={SPIE},
author={Hammer, Manfred}, editor={García-Blanco, Sonia M. and Cheben, Pavel},
year={2022}, pages={1200414} }'
chicago: 'Hammer, Manfred. “Small-Scale Online Simulations in Guided-Wave Photonics.”
In Integrated Optics: Devices, Materials, and Technologies XXVI, edited
by Sonia M. García-Blanco and Pavel Cheben, 1200414. SPIE, 2022. https://doi.org/10.1117/12.2612208.'
ieee: 'M. Hammer, “Small-scale online simulations in guided-wave photonics,” in
Integrated Optics: Devices, Materials, and Technologies XXVI, 2022, p.
1200414, doi: 10.1117/12.2612208.'
mla: 'Hammer, Manfred. “Small-Scale Online Simulations in Guided-Wave Photonics.”
Integrated Optics: Devices, Materials, and Technologies XXVI, edited by
Sonia M. García-Blanco and Pavel Cheben, SPIE, 2022, p. 1200414, doi:10.1117/12.2612208.'
short: 'M. Hammer, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics:
Devices, Materials, and Technologies XXVI, SPIE, 2022, p. 1200414.'
date_created: 2022-03-21T10:17:30Z
date_updated: 2023-04-20T10:10:55Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1117/12.2612208
editor:
- first_name: Sonia M.
full_name: García-Blanco, Sonia M.
last_name: García-Blanco
- first_name: Pavel
full_name: Cheben, Pavel
last_name: Cheben
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2022-03-22T18:05:02Z
date_updated: 2022-03-22T18:05:02Z
file_id: '30445'
file_name: 2022-03 Hammer - SPIE Photonics West 2022 - Small-scale online simulations
in guided-wave photonics (official version).pdf
file_size: 868473
relation: main_file
file_date_updated: 2022-03-22T18:05:02Z
has_accepted_license: '1'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: '1200414'
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '75'
name: 'TRR 142 - C05: TRR 142 - Subproject C05'
publication: 'Integrated Optics: Devices, Materials, and Technologies XXVI'
publication_status: published
publisher: SPIE
status: public
title: Small-scale online simulations in guided-wave photonics
type: conference
user_id: '158'
year: '2022'
...
---
_id: '30210'
abstract:
- lang: eng
text: Lithium niobate on insulator (LNOI) has a great potential for photonic integrated
circuits, providing substantial versatility in design of various integrated components.
To properly use these components in the implementation of different quantum protocols,
photons with different properties are required. In this paper, we theoretically
demonstrate a flexible source of correlated photons built on the LNOI waveguide
of a special geometry. This source is based on the parametric down-conversion
(PDC) process, in which the signal and idler photons are generated at the telecom
wavelength and have different spatial profiles and polarizations, but the same
group velocities. Distinguishability in polarizations and spatial profiles facilitates
the routing and manipulating individual photons, while the equality of their group
velocities leads to the absence of temporal walk-off between photons. We show
how the spectral properties of the generated photons and the number of their frequency
modes can be controlled depending on the pump characteristics and the waveguide
length. Finally, we discuss special regimes, in which narrowband light with strong
frequency correlations and polarization-entangled Bell states are generated at
the telecom wavelength.
author:
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Alessandro
full_name: Ferreri, Alessandro
id: '65609'
last_name: Ferreri
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Maximilian
full_name: Albert, Maximilian
last_name: Albert
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Polina R.
full_name: Sharapova, Polina R.
id: '60286'
last_name: Sharapova
citation:
ama: 'Ebers L, Ferreri A, Hammer M, et al. Flexible source of correlated photons
based on LNOI rib waveguides. Journal of Physics: Photonics. 2022;4:025001.
doi:10.1088/2515-7647/ac5a5b'
apa: 'Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., &
Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib
waveguides. Journal of Physics: Photonics, 4, 025001. https://doi.org/10.1088/2515-7647/ac5a5b'
bibtex: '@article{Ebers_Ferreri_Hammer_Albert_Meier_Förstner_Sharapova_2022, title={Flexible
source of correlated photons based on LNOI rib waveguides}, volume={4}, DOI={10.1088/2515-7647/ac5a5b},
journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Ebers,
Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier,
Cedrik and Förstner, Jens and Sharapova, Polina R.}, year={2022}, pages={025001}
}'
chicago: 'Ebers, Lena, Alessandro Ferreri, Manfred Hammer, Maximilian Albert, Cedrik
Meier, Jens Förstner, and Polina R. Sharapova. “Flexible Source of Correlated
Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics 4
(2022): 025001. https://doi.org/10.1088/2515-7647/ac5a5b.'
ieee: 'L. Ebers et al., “Flexible source of correlated photons based on LNOI
rib waveguides,” Journal of Physics: Photonics, vol. 4, p. 025001, 2022,
doi: 10.1088/2515-7647/ac5a5b.'
mla: 'Ebers, Lena, et al. “Flexible Source of Correlated Photons Based on LNOI Rib
Waveguides.” Journal of Physics: Photonics, vol. 4, IOP Publishing, 2022,
p. 025001, doi:10.1088/2515-7647/ac5a5b.'
short: 'L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R.
Sharapova, Journal of Physics: Photonics 4 (2022) 025001.'
date_created: 2022-03-07T09:51:50Z
date_updated: 2023-03-24T07:39:18Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '287'
doi: 10.1088/2515-7647/ac5a5b
intvolume: ' 4'
keyword:
- tet_topic_waveguide
language:
- iso: eng
page: '025001'
project:
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '75'
name: 'TRR 142 - C5: TRR 142 - Subproject C5'
- _id: '72'
name: 'TRR 142 - C2: TRR 142 - Subproject C2'
- _id: '53'
name: 'TRR 142: TRR 142'
publication: 'Journal of Physics: Photonics'
publication_identifier:
issn:
- 2515-7647
publication_status: published
publisher: IOP Publishing
related_material:
link:
- description: Corrigendum for table C1
relation: erratum
url: https://doi.org/10.1088/2515-7647/acc70c
status: public
title: Flexible source of correlated photons based on LNOI rib waveguides
type: journal_article
user_id: '158'
volume: 4
year: '2022'
...
---
_id: '33466'
abstract:
- lang: eng
text: 'We review our results of numerical simulations of light scattering from different
systems of densely packed irregular particles. We consider spherical clusters,
thick layers and monolayers with realistic topologies and dimensions much larger
than the wavelength of light. The maximum bulk packing density of clusters is
0.5. A numerically exact solution of the electromagnetic problem is obtained using
the Discontinuous Galerkin Time Domain method and with application of high- performance
computing. We show that high packing density causes light localization in such
structures which makes an impact on the opposition phenomena: backscattering intensity
surge and negative linear polarization feature. Diffuse multiple scattering is
significantly reduced in the case of non-absorbing particles and near-field interaction
results in a percolation-like light transport determined by the topology of the
medium. With this the negative polarization feature caused by single scattering
gets enhanced if compared to lower density samples. We also confirm coherent double
scattering mechanism of negative polarization for light scattered from dense absorbing
slabs. In this case convergent result for the scattering angle polarization dependency
at backscattering can be obtained for a layer of just a few tens of particles
if they are larger than the wavelength.'
author:
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Yuriy
full_name: Shkuratov, Yuriy
last_name: Shkuratov
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Grynko Y, Shkuratov Y, Alhaddad S, Förstner J. Light Scattering by Large Densely
Packed Clusters of Particles. In: Kokhanovsky A, ed. Springer Series in Light
Scattering - Volume 8: Light Polarization and Multiple Scattering in Turbid Media.
Vol 8. Springer Series in Light Scattering. Springer International Publishing;
2022. doi:10.1007/978-3-031-10298-1_4'
apa: 'Grynko, Y., Shkuratov, Y., Alhaddad, S., & Förstner, J. (2022). Light
Scattering by Large Densely Packed Clusters of Particles. In A. Kokhanovsky (Ed.),
Springer Series in Light Scattering - Volume 8: Light Polarization and Multiple
Scattering in Turbid Media (Vol. 8). Springer International Publishing. https://doi.org/10.1007/978-3-031-10298-1_4'
bibtex: '@inbook{Grynko_Shkuratov_Alhaddad_Förstner_2022, place={Cham}, series={Springer
Series in Light Scattering}, title={Light Scattering by Large Densely Packed Clusters
of Particles}, volume={8}, DOI={10.1007/978-3-031-10298-1_4},
booktitle={Springer Series in Light Scattering - Volume 8: Light Polarization
and Multiple Scattering in Turbid Media}, publisher={Springer International Publishing},
author={Grynko, Yevgen and Shkuratov, Yuriy and Alhaddad, Samer and Förstner,
Jens}, editor={Kokhanovsky, Alexander}, year={2022}, collection={Springer Series
in Light Scattering} }'
chicago: 'Grynko, Yevgen, Yuriy Shkuratov, Samer Alhaddad, and Jens Förstner. “Light
Scattering by Large Densely Packed Clusters of Particles.” In Springer Series
in Light Scattering - Volume 8: Light Polarization and Multiple Scattering in
Turbid Media, edited by Alexander Kokhanovsky, Vol. 8. Springer Series in
Light Scattering. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-10298-1_4.'
ieee: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Light Scattering
by Large Densely Packed Clusters of Particles,” in Springer Series in Light
Scattering - Volume 8: Light Polarization and Multiple Scattering in Turbid Media,
vol. 8, A. Kokhanovsky, Ed. Cham: Springer International Publishing, 2022.'
mla: 'Grynko, Yevgen, et al. “Light Scattering by Large Densely Packed Clusters
of Particles.” Springer Series in Light Scattering - Volume 8: Light Polarization
and Multiple Scattering in Turbid Media, edited by Alexander Kokhanovsky,
vol. 8, Springer International Publishing, 2022, doi:10.1007/978-3-031-10298-1_4.'
short: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, J. Förstner, in: A. Kokhanovsky (Ed.),
Springer Series in Light Scattering - Volume 8: Light Polarization and Multiple
Scattering in Turbid Media, Springer International Publishing, Cham, 2022.'
date_created: 2022-09-22T09:18:45Z
date_updated: 2023-01-11T15:28:17Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1007/978-3-031-10298-1_4
editor:
- first_name: Alexander
full_name: Kokhanovsky, Alexander
last_name: Kokhanovsky
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2022-09-22T09:24:45Z
date_updated: 2022-09-22T09:24:45Z
file_id: '33467'
file_name: 2022-09 Grynko - Book chapter on Light Scattering by Large Densely Packed
Clusters of Particles.pdf
file_size: 1525307
relation: main_file
file_date_updated: 2022-09-22T09:24:45Z
has_accepted_license: '1'
intvolume: ' 8'
keyword:
- tet_topic_scattering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://rdcu.be/cV5GC
oa: '1'
place: Cham
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: 'Springer Series in Light Scattering - Volume 8: Light Polarization and
Multiple Scattering in Turbid Media'
publication_identifier:
isbn:
- '9783031102974'
- '9783031102981'
issn:
- 2509-2790
- 2509-2804
publication_status: published
publisher: Springer International Publishing
series_title: Springer Series in Light Scattering
status: public
title: Light Scattering by Large Densely Packed Clusters of Particles
type: book_chapter
user_id: '158'
volume: 8
year: '2022'
...
---
_id: '35128'
abstract:
- lang: eng
text: Here we demonstrate a new, to the best of our knowledge, type of 3-dB coupler
that has an ultra-broadband operational range from 1300 to 1600 nm with low fabrication
sensitivity. The overall device size is 800 µm including in/out S-bend waveguides.
The coupler is an asymmetric non-uniform directional coupler that consists of
two tapered waveguides. One of the coupler arms is shifted by 100 µm in the propagation
direction, which results in a more wavelength-insensitive 3-dB response compared
to a standard (not shifted) coupler. Moreover, compared to a long adiabatic coupler,
we achieved a similar wavelength response at a 16-times-smaller device length.
The couplers were fabricated using the silicon nitride platform of Lionix International.
We also experimentally demonstrated an optical switch that is made by using two
of these couplers in a Mach–Zehnder interferometer configuration. According to
experimental results, this optical switch exhibits –10 dB of extinction ratio
over the 1500–1600 nm wavelength range. Our results indicate that this new type
of coupler holds great promise for various applications, including optical imaging,
telecommunications, and reconfigurable photonic processors where compact, fabrication-tolerant,
and wavelength-insensitive couplers are essential.
author:
- first_name: Hamed
full_name: Nikbakht, Hamed
last_name: Nikbakht
- first_name: Mohammad Talebi
full_name: Khoshmehr, Mohammad Talebi
last_name: Khoshmehr
- first_name: Bob
full_name: van Someren, Bob
last_name: van Someren
- first_name: Dieter
full_name: Teichrib, Dieter
last_name: Teichrib
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: B. Imran
full_name: Akca, B. Imran
last_name: Akca
citation:
ama: Nikbakht H, Khoshmehr MT, van Someren B, et al. Asymmetric, non-uniform 3-dB
directional coupler with 300-nm bandwidth and a small footprint. Optics Letters.
2022;48(2):207. doi:10.1364/ol.476537
apa: Nikbakht, H., Khoshmehr, M. T., van Someren, B., Teichrib, D., Hammer, M.,
Förstner, J., & Akca, B. I. (2022). Asymmetric, non-uniform 3-dB directional
coupler with 300-nm bandwidth and a small footprint. Optics Letters, 48(2),
207. https://doi.org/10.1364/ol.476537
bibtex: '@article{Nikbakht_Khoshmehr_van Someren_Teichrib_Hammer_Förstner_Akca_2022,
title={Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth
and a small footprint}, volume={48}, DOI={10.1364/ol.476537},
number={2}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Nikbakht,
Hamed and Khoshmehr, Mohammad Talebi and van Someren, Bob and Teichrib, Dieter
and Hammer, Manfred and Förstner, Jens and Akca, B. Imran}, year={2022}, pages={207}
}'
chicago: 'Nikbakht, Hamed, Mohammad Talebi Khoshmehr, Bob van Someren, Dieter Teichrib,
Manfred Hammer, Jens Förstner, and B. Imran Akca. “Asymmetric, Non-Uniform 3-DB
Directional Coupler with 300-Nm Bandwidth and a Small Footprint.” Optics Letters
48, no. 2 (2022): 207. https://doi.org/10.1364/ol.476537.'
ieee: 'H. Nikbakht et al., “Asymmetric, non-uniform 3-dB directional coupler
with 300-nm bandwidth and a small footprint,” Optics Letters, vol. 48,
no. 2, p. 207, 2022, doi: 10.1364/ol.476537.'
mla: Nikbakht, Hamed, et al. “Asymmetric, Non-Uniform 3-DB Directional Coupler with
300-Nm Bandwidth and a Small Footprint.” Optics Letters, vol. 48, no. 2,
Optica Publishing Group, 2022, p. 207, doi:10.1364/ol.476537.
short: H. Nikbakht, M.T. Khoshmehr, B. van Someren, D. Teichrib, M. Hammer, J. Förstner,
B.I. Akca, Optics Letters 48 (2022) 207.
date_created: 2023-01-03T09:32:47Z
date_updated: 2023-01-03T10:37:34Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1364/ol.476537
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2023-01-03T09:36:34Z
date_updated: 2023-01-03T09:36:34Z
embargo: 2024-01-03
embargo_to: open_access
file_id: '35129'
file_name: 2023-01 Nikbakht - Optics Letter - Asymmetric, non-uniform 3-dB directional
coupler with 300-nm bandwidth and small footprint.pdf
file_size: 3731864
relation: main_file
file_date_updated: 2023-01-03T09:36:34Z
has_accepted_license: '1'
intvolume: ' 48'
issue: '2'
keyword:
- tet_topic_waveguide
language:
- iso: eng
page: '207'
publication: Optics Letters
publication_identifier:
issn:
- 0146-9592
- 1539-4794
publication_status: published
publisher: Optica Publishing Group
status: public
title: Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and
a small footprint
type: journal_article
user_id: '158'
volume: 48
year: '2022'
...
---
_id: '34136'
author:
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Yuriy
full_name: Shkuratov, Yuriy
last_name: Shkuratov
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Grynko Y, Shkuratov Y, Alhaddad S, Förstner J. Light backscattering from numerical
analog of planetary regoliths. In: Copernicus GmbH; 2022. doi: 10.5194/epsc2022-151'
apa: Grynko, Y., Shkuratov, Y., Alhaddad, S., & Förstner, J. (2022). Light
backscattering from numerical analog of planetary regoliths. 16th Europlanet
Science Congress 2022, Granada, Spain. https://doi.org/
10.5194/epsc2022-151
bibtex: '@inproceedings{Grynko_Shkuratov_Alhaddad_Förstner_2022, title={Light backscattering
from numerical analog of planetary regoliths}, DOI={ 10.5194/epsc2022-151}, publisher={Copernicus GmbH},
author={Grynko, Yevgen and Shkuratov, Yuriy and Alhaddad, Samer and Förstner,
Jens}, year={2022} }'
chicago: Grynko, Yevgen, Yuriy Shkuratov, Samer Alhaddad, and Jens Förstner. “Light
Backscattering from Numerical Analog of Planetary Regoliths.” Copernicus GmbH,
2022. https://doi.org/ 10.5194/epsc2022-151.
ieee: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Light backscattering
from numerical analog of planetary regoliths,” presented at the 16th Europlanet
Science Congress 2022, Granada, Spain, 2022, doi:
10.5194/epsc2022-151.'
mla: Grynko, Yevgen, et al. Light Backscattering from Numerical Analog of Planetary
Regoliths. Copernicus GmbH, 2022, doi:
10.5194/epsc2022-151.
short: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, J. Förstner, in: Copernicus GmbH,
2022.'
conference:
end_date: 2022-09-23
location: Granada, Spain
name: 16th Europlanet Science Congress 2022
start_date: 2022-09-18
date_created: 2022-11-23T12:03:29Z
date_updated: 2022-11-23T12:09:03Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: ' 10.5194/epsc2022-151'
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2022-11-23T12:07:10Z
date_updated: 2022-11-23T12:07:10Z
file_id: '34137'
file_name: 2022-09 Grynko - EPSC2022 conference -151-print.pdf
file_size: 645190
relation: main_file
file_date_updated: 2022-11-23T12:07:10Z
has_accepted_license: '1'
keyword:
- tet_topic_scattering
language:
- iso: eng
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication_status: published
publisher: Copernicus GmbH
status: public
title: Light backscattering from numerical analog of planetary regoliths
type: conference_abstract
user_id: '158'
year: '2022'
...
---
_id: '31574'
abstract:
- lang: eng
text: We model negative polarization, which is observed for planetary regoliths
at backscattering, solving a full wave problem of light scattering with a numerically
exact Discontinuous Galerkin Time Domain (DGTD) method. Pieces of layers with
the bulk packing density of particles close to 0.5 are used. The model particles
are highly absorbing and have irregular shapes and sizes larger than the wavelength
of light. This represents a realistic analog of low-albedo planetary regoliths.
Our simulations confirm coherent backscattering mechanism of the origin of negative
polarization. We show that angular profiles of polarization are stabilized if
the number of particles in a layer piece becomes larger than ten. This allows
application of our approach to the negative polarization modeling for planetary
regoliths.
author:
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Yuriy
full_name: Shkuratov, Yuriy
last_name: Shkuratov
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Grynko Y, Shkuratov Y, Alhaddad S, Förstner J. Negative polarization of light
at backscattering from a numerical analog of planetary regoliths. Icarus.
2022;384:115099. doi:10.1016/j.icarus.2022.115099
apa: Grynko, Y., Shkuratov, Y., Alhaddad, S., & Förstner, J. (2022). Negative
polarization of light at backscattering from a numerical analog of planetary regoliths.
Icarus, 384, 115099. https://doi.org/10.1016/j.icarus.2022.115099
bibtex: '@article{Grynko_Shkuratov_Alhaddad_Förstner_2022, title={Negative polarization
of light at backscattering from a numerical analog of planetary regoliths}, volume={384},
DOI={10.1016/j.icarus.2022.115099},
journal={Icarus}, publisher={Elsevier BV}, author={Grynko, Yevgen and Shkuratov,
Yuriy and Alhaddad, Samer and Förstner, Jens}, year={2022}, pages={115099} }'
chicago: 'Grynko, Yevgen, Yuriy Shkuratov, Samer Alhaddad, and Jens Förstner. “Negative
Polarization of Light at Backscattering from a Numerical Analog of Planetary Regoliths.”
Icarus 384 (2022): 115099. https://doi.org/10.1016/j.icarus.2022.115099.'
ieee: 'Y. Grynko, Y. Shkuratov, S. Alhaddad, and J. Förstner, “Negative polarization
of light at backscattering from a numerical analog of planetary regoliths,” Icarus,
vol. 384, p. 115099, 2022, doi: 10.1016/j.icarus.2022.115099.'
mla: Grynko, Yevgen, et al. “Negative Polarization of Light at Backscattering from
a Numerical Analog of Planetary Regoliths.” Icarus, vol. 384, Elsevier
BV, 2022, p. 115099, doi:10.1016/j.icarus.2022.115099.
short: Y. Grynko, Y. Shkuratov, S. Alhaddad, J. Förstner, Icarus 384 (2022) 115099.
date_created: 2022-06-01T18:53:35Z
date_updated: 2022-06-01T18:57:51Z
ddc:
- '530'
department:
- _id: '61'
doi: 10.1016/j.icarus.2022.115099
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2022-06-01T18:56:44Z
date_updated: 2022-06-01T18:56:44Z
file_id: '31575'
file_name: 2022-06 Grynko - Icarus - Negative polarization of light at backscattering
from a numerical analog of planetary regoliths.pdf
file_size: 1419286
relation: main_file
file_date_updated: 2022-06-01T18:56:44Z
has_accepted_license: '1'
intvolume: ' 384'
keyword:
- tet_topic_scattering
language:
- iso: eng
oa: '1'
page: '115099'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Icarus
publication_identifier:
issn:
- 0019-1035
publication_status: published
publisher: Elsevier BV
status: public
title: Negative polarization of light at backscattering from a numerical analog of
planetary regoliths
type: journal_article
user_id: '158'
volume: 384
year: '2022'
...
---
_id: '31329'
abstract:
- lang: eng
text: Highly directive antennas with the ability of shaping radiation patterns in
desired directions are essential for efficient on-chip optical communication with
reduced cross talk. In this paper, we design and optimize three distinct broadband
traveling-wave tantalum pentoxide antennas exhibiting highly directional characteristics.
Our antennas contain a director and reflector deposited on a glass substrate,
which are excited by a dipole emitter placed in the feed gap between the two elements.
Full-wave simulations in conjunction with global optimization provide structures
with an enhanced linear directivity as high as 119 radiating in the substrate.
The high directivity is a result of the interplay between two dominant TE modes
and the leaky modes present in the antenna director. Furthermore, these low-loss
dielectric antennas exhibit a near-unity radiation efficiency at the operational
wavelength of 780 nm and maintain a broad bandwidth. Our numerical results are
in good agreement with experimental measurements from the optimized antennas fabricated
using a two-step electron-beam lithography, revealing the highly directive nature
of our structures. We envision that our antenna designs can be conveniently adapted
to other dielectric materials and prove instrumental for inter-chip optical communications
and other on-chip applications.
author:
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Lok-Yee
full_name: Yan, Lok-Yee
last_name: Yan
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Stefan
full_name: Linden, Stefan
last_name: Linden
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
citation:
ama: Farheen H, Yan L-Y, Quiring V, et al. Broadband optical Ta2O5 antennas for
directional emission of light. Optics Express. 2022;30(11):19288. doi:10.1364/oe.455815
apa: Farheen, H., Yan, L.-Y., Quiring, V., Eigner, C., Zentgraf, T., Linden, S.,
Förstner, J., & Myroshnychenko, V. (2022). Broadband optical Ta2O5 antennas
for directional emission of light. Optics Express, 30(11), 19288.
https://doi.org/10.1364/oe.455815
bibtex: '@article{Farheen_Yan_Quiring_Eigner_Zentgraf_Linden_Förstner_Myroshnychenko_2022,
title={Broadband optical Ta2O5 antennas for directional emission of light}, volume={30},
DOI={10.1364/oe.455815}, number={11},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Farheen,
Henna and Yan, Lok-Yee and Quiring, Viktor and Eigner, Christof and Zentgraf,
Thomas and Linden, Stefan and Förstner, Jens and Myroshnychenko, Viktor}, year={2022},
pages={19288} }'
chicago: 'Farheen, Henna, Lok-Yee Yan, Viktor Quiring, Christof Eigner, Thomas Zentgraf,
Stefan Linden, Jens Förstner, and Viktor Myroshnychenko. “Broadband Optical Ta2O5
Antennas for Directional Emission of Light.” Optics Express 30, no. 11
(2022): 19288. https://doi.org/10.1364/oe.455815.'
ieee: 'H. Farheen et al., “Broadband optical Ta2O5 antennas for directional
emission of light,” Optics Express, vol. 30, no. 11, p. 19288, 2022, doi:
10.1364/oe.455815.'
mla: Farheen, Henna, et al. “Broadband Optical Ta2O5 Antennas for Directional Emission
of Light.” Optics Express, vol. 30, no. 11, Optica Publishing Group, 2022,
p. 19288, doi:10.1364/oe.455815.
short: H. Farheen, L.-Y. Yan, V. Quiring, C. Eigner, T. Zentgraf, S. Linden, J.
Förstner, V. Myroshnychenko, Optics Express 30 (2022) 19288.
date_created: 2022-05-18T16:39:17Z
date_updated: 2022-05-18T20:01:46Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/oe.455815
intvolume: ' 30'
issue: '11'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
page: '19288'
project:
- _id: '75'
name: 'TRR 142 - C5: TRR 142 - Subproject C5'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Broadband optical Ta2O5 antennas for directional emission of light
type: journal_article
user_id: '158'
volume: 30
year: '2022'
...
---
_id: '30722'
abstract:
- lang: eng
text: In dieser Arbeit wird die elektromagnetische Wellenausbreitung in integrierten
optischen Wellenleitern mit Hilfe von halb analytischen und numerischen Simulationsmethoden
untersucht. Im ersten Teil werden 2-D Si/SiO2-Wellenleiterkonfigurationen mit
hohem Brechungsindexkontrast betrachtet. Die Strukturen werden mit halb geführten
Wellen unter schrägen Ausbreitungswinkeln angeregt. Dadurch kann die Leistungsübertragung
zu bestimmten ausgehenden Moden unterdrückt werden, wodurch vollständig verlustfreie
Systeme entstehen. Zusätzlich dient die Anregung mit einem seitlich begrenzten,
einfallenden Wellenbündel aus halb geführten Wellen dazu, praktisch relevantere
3-D Konfigurationen zu realisieren. Darüber hinaus wird eine schrittweise Winkelspektrum-Methode
vorgestellt, die es ermöglicht, in Kombination mit voll vektoriellen 2-D Finite-Elemente-Lösungen
für Teilprobleme mit geringerer Komplexität, die Wellenausbreitung in planaren,
linsenförmigen Wellenleitern numerisch in drei Raumrichtungen zu berechnen. Im
zweiten Teil dieser Arbeit wird die Ausbreitung in Wellenleiterstrukturen aus
Lithiumniobat untersucht, welche für quantenoptische Effekte genutzt werden. Zur
Detektion einzelner Photonen werden supraleitende Nanodrähte auf eindiffundierten
Lithiumniobat Wellenleitern mit zusätzlicher Taperschicht aus Silizium betrachtet.
Um die Wellenausbreitung in diesen 3-D Wellenleitern zu beschreiben, wird eine
einseitig gerichtete Finite-Elemente „Modal Matching“ Methode eingeführt. Abschließend
werden Rippenwellenleiter aus Lithiumniobat analysiert, die auf Siliziumdioxid
Plattformen aufgebracht sind. Der Schwerpunkt liegt hier auf dem nichtlinearen
„Parametric Down-Conversion“ Prozess, der für die Erzeugung verschränkter Photonen
verwendet wird.
- lang: eng
text: In this work, the electromagnetic wave propagation in integrated optical waveguides
is studied by using semi-analytical and numerical simulation methods. In the first
part, 2-D high-index contrast Si/SiO2 dielectric slab waveguide configurations
are investigated. The structures are excited with semi-guided waves at oblique
angles of propagation. Due to this, power transfer to specific outgoing modes
can be suppressed, resulting in completely lossless configurations. The excitation
is further examined for incoming, laterally confined wave bundles of semi-guided
waves to realize practically more relevant 3-D configurations. Additionally, a
stepwise angular spectrum method in combination with full vectorial 2-D finite
element solutions for subproblems of lower complexity to numerically simulate
the wave propagation in full 3-D planar lens-like waveguides is presented. In
the second part, the wave propagation in lithium niobate waveguide structures
is examined, which are used for quantum optical effects. On the one hand, superconducting
nanowires on titanium in-diffused lithium niobate waveguides with an additional
tapered silicon layer are used for single photon detection. The wave propagation
in these 3-D multiscale tapers is studied by introducing a unidirectional finite
element modal matching method. On the other hand, lithium niobate rib waveguides
on silicon dioxide platforms are analyzed, focusing on the nonlinear parametric
down-conversion process used for the generation of entangled photons.
author:
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
citation:
ama: Ebers L. Semi-Guided Waves in Integrated Optical Waveguide Structures.;
2022. doi:10.17619/UNIPB/1-1288
apa: Ebers, L. (2022). Semi-guided waves in integrated optical waveguide structures.
https://doi.org/10.17619/UNIPB/1-1288
bibtex: '@book{Ebers_2022, title={Semi-guided waves in integrated optical waveguide
structures}, DOI={10.17619/UNIPB/1-1288},
author={Ebers, Lena}, year={2022} }'
chicago: Ebers, Lena. Semi-Guided Waves in Integrated Optical Waveguide Structures,
2022. https://doi.org/10.17619/UNIPB/1-1288.
ieee: L. Ebers, Semi-guided waves in integrated optical waveguide structures.
2022.
mla: Ebers, Lena. Semi-Guided Waves in Integrated Optical Waveguide Structures.
2022, doi:10.17619/UNIPB/1-1288.
short: L. Ebers, Semi-Guided Waves in Integrated Optical Waveguide Structures, 2022.
date_created: 2022-03-29T18:42:08Z
date_updated: 2022-03-29T18:44:30Z
department:
- _id: '61'
- _id: '230'
doi: 10.17619/UNIPB/1-1288
keyword:
- tet_topic_waveguide
language:
- iso: eng
status: public
supervisor:
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
title: Semi-guided waves in integrated optical waveguide structures
type: dissertation
user_id: '158'
year: '2022'
...
---
_id: '30387'
abstract:
- lang: eng
text: Resonant evanescent coupling can be utilized to selectively excite orbital
angular momentum (OAM) modes of high angular order supported by a thin circular
dielectric rod. Our 2.5-D hybrid-analytical coupled mode model combines the vectorial
fields associated with the fundamental TE- and TM-modes of a standard silicon
photonics slab waveguide, propagating at oblique angles with respect to the rod
axis, and the hybrid modes supported by the rod. One observes an efficient resonant
interaction in cases where the common axial wavenumber of the waves in the slab
matches the propagation constant of one or more modes of the rod. For certain
modes of high angular order, the incident wave is able to transfer its directionality
to the field in the fiber, exciting effectively only one of a pair of degenerate
OAM modes
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Hammer M, Ebers L, Förstner J. Resonant evanescent excitation of OAM modes
in a high-contrast circular step-index fiber. In: Andrews DL, Galvez EJ, Rubinsztein-Dunlop
H, eds. Complex Light and Optical Forces XVI. SPIE; 2022:120170F. doi:10.1117/12.2612179'
apa: Hammer, M., Ebers, L., & Förstner, J. (2022). Resonant evanescent excitation
of OAM modes in a high-contrast circular step-index fiber. In D. L. Andrews, E.
J. Galvez, & H. Rubinsztein-Dunlop (Eds.), Complex Light and Optical Forces
XVI (p. 120170F). SPIE. https://doi.org/10.1117/12.2612179
bibtex: '@inproceedings{Hammer_Ebers_Förstner_2022, title={Resonant evanescent excitation
of OAM modes in a high-contrast circular step-index fiber}, DOI={10.1117/12.2612179},
booktitle={Complex Light and Optical Forces XVI}, publisher={SPIE}, author={Hammer,
Manfred and Ebers, Lena and Förstner, Jens}, editor={Andrews, David L. and Galvez,
Enrique J. and Rubinsztein-Dunlop, Halina}, year={2022}, pages={120170F} }'
chicago: Hammer, Manfred, Lena Ebers, and Jens Förstner. “Resonant Evanescent Excitation
of OAM Modes in a High-Contrast Circular Step-Index Fiber.” In Complex Light
and Optical Forces XVI, edited by David L. Andrews, Enrique J. Galvez, and
Halina Rubinsztein-Dunlop, 120170F. SPIE, 2022. https://doi.org/10.1117/12.2612179.
ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of
OAM modes in a high-contrast circular step-index fiber,” in Complex Light and
Optical Forces XVI, 2022, p. 120170F, doi: 10.1117/12.2612179.'
mla: Hammer, Manfred, et al. “Resonant Evanescent Excitation of OAM Modes in a High-Contrast
Circular Step-Index Fiber.” Complex Light and Optical Forces XVI, edited
by David L. Andrews et al., SPIE, 2022, p. 120170F, doi:10.1117/12.2612179.
short: 'M. Hammer, L. Ebers, J. Förstner, in: D.L. Andrews, E.J. Galvez, H. Rubinsztein-Dunlop
(Eds.), Complex Light and Optical Forces XVI, SPIE, 2022, p. 120170F.'
date_created: 2022-03-21T10:12:58Z
date_updated: 2022-03-22T18:04:20Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1117/12.2612179
editor:
- first_name: David L.
full_name: Andrews, David L.
last_name: Andrews
- first_name: Enrique J.
full_name: Galvez, Enrique J.
last_name: Galvez
- first_name: Halina
full_name: Rubinsztein-Dunlop, Halina
last_name: Rubinsztein-Dunlop
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2022-03-22T18:03:50Z
date_updated: 2022-03-22T18:03:50Z
file_id: '30444'
file_name: 2022-03 Hammer - SPIE Photonics West 2022 - Resonant evanescent excitation
of OAM modes in a high-contrast circular (official version).pdf
file_size: 2015899
relation: main_file
file_date_updated: 2022-03-22T18:03:50Z
has_accepted_license: '1'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: 120170F
project:
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '75'
name: 'TRR 142 - C5: TRR 142 - Subproject C5'
publication: Complex Light and Optical Forces XVI
publication_status: published
publisher: SPIE
status: public
title: Resonant evanescent excitation of OAM modes in a high-contrast circular step-index
fiber
type: conference
user_id: '158'
year: '2022'
...
---
_id: '29075'
abstract:
- lang: eng
text: We study a double-scattering coherent mechanism of negative polarization (NP)
near opposition that is observed for powder-like surfaces. The problem is solved
numerically for absorbing structures with irregular constituents, cubes, spheres,
and ellipsoids larger than the wavelength of incident light. Our simulations show
that double scattering between two random irregular particles shows weak NP. Adding
one more particle significantly increases the relative contribution of double
scattering which enhances NP. Simulations with regular shapes and controlled geometric
parameters show that the interference mechanism is sensitive to the geometry of
the scattering system and can also result in no polarization or even strong enhancement
of positive polarization at backscattering.
author:
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Alhaddad S, Grynko Y, Farheen H, Förstner J. Numerical analysis of the coherent
mechanism producing negative polarization at backscattering from systems of absorbing
particles. Optics Letters. 2022;47(1):58. doi:10.1364/ol.444953
apa: Alhaddad, S., Grynko, Y., Farheen, H., & Förstner, J. (2022). Numerical
analysis of the coherent mechanism producing negative polarization at backscattering
from systems of absorbing particles. Optics Letters, 47(1), 58.
https://doi.org/10.1364/ol.444953
bibtex: '@article{Alhaddad_Grynko_Farheen_Förstner_2022, title={Numerical analysis
of the coherent mechanism producing negative polarization at backscattering from
systems of absorbing particles}, volume={47}, DOI={10.1364/ol.444953},
number={1}, journal={Optics Letters}, author={Alhaddad, Samer and Grynko, Yevgen
and Farheen, Henna and Förstner, Jens}, year={2022}, pages={58} }'
chicago: 'Alhaddad, Samer, Yevgen Grynko, Henna Farheen, and Jens Förstner. “Numerical
Analysis of the Coherent Mechanism Producing Negative Polarization at Backscattering
from Systems of Absorbing Particles.” Optics Letters 47, no. 1 (2022):
58. https://doi.org/10.1364/ol.444953.'
ieee: 'S. Alhaddad, Y. Grynko, H. Farheen, and J. Förstner, “Numerical analysis
of the coherent mechanism producing negative polarization at backscattering from
systems of absorbing particles,” Optics Letters, vol. 47, no. 1, p. 58,
2022, doi: 10.1364/ol.444953.'
mla: Alhaddad, Samer, et al. “Numerical Analysis of the Coherent Mechanism Producing
Negative Polarization at Backscattering from Systems of Absorbing Particles.”
Optics Letters, vol. 47, no. 1, 2022, p. 58, doi:10.1364/ol.444953.
short: S. Alhaddad, Y. Grynko, H. Farheen, J. Förstner, Optics Letters 47 (2022)
58.
date_created: 2021-12-21T13:49:29Z
date_updated: 2022-01-06T06:58:46Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/ol.444953
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2021-12-21T13:53:47Z
date_updated: 2021-12-21T13:53:47Z
embargo: 2022-12-21
embargo_to: open_access
file_id: '29076'
file_name: 2022-01 Alhaddad - Optics Letter - Double Scattering.pdf
file_size: 3197213
relation: main_file
file_date_updated: 2021-12-21T13:53:47Z
has_accepted_license: '1'
intvolume: ' 47'
issue: '1'
keyword:
- tet_topic_scattering
language:
- iso: eng
page: '58'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Optics Letters
publication_identifier:
issn:
- 0146-9592
- 1539-4794
publication_status: published
status: public
title: Numerical analysis of the coherent mechanism producing negative polarization
at backscattering from systems of absorbing particles
type: journal_article
user_id: '158'
volume: 47
year: '2022'
...
---
_id: '28413'
abstract:
- lang: eng
text: Optical traveling wave antennas offer unique opportunities to control and
selectively guide light into a specific direction, which renders them excellent
candidates for optical communication and sensing. These applications require state-of-the-art
engineering to reach optimized functionalities such as high directivity and radiation
efficiency, low sidelobe levels, broadband and tunable capabilities, and compact
design. In this work, we report on the numerical optimization of the directivity
of optical traveling wave antennas made from low-loss dielectric materials using
full-wave numerical simulations in conjunction with the particle swarm optimization
algorithm. The antennas are composed of a reflector and a director deposited on
a glass substrate, and an emitter placed in the feed gap between them serves as
an internal source of excitation. In particular, we analyze antennas with rectangular-
and horn-shaped directors made of either hafnium dioxide or silicon. The optimized
antennas produce highly directional emissions due to the presence of two dominant
guided TE modes in the director in addition to leaky modes. These guided modes
dominate the far-field emission pattern and govern the direction of the main lobe
emission, which predominately originates from the end facet of the director. Our
work also provides a comprehensive analysis of the modes, radiation patterns,
parametric influences, and bandwidths of the antennas, which highlights their
robust nature.
author:
- first_name: Henna
full_name: Farheen, Henna
last_name: Farheen
- first_name: Till
full_name: Leuteritz, Till
last_name: Leuteritz
- first_name: Stefan
full_name: Linden, Stefan
last_name: Linden
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Farheen H, Leuteritz T, Linden S, Myroshnychenko V, Förstner J. Optimization
of optical waveguide antennas for directive emission of light. Journal of the
Optical Society of America B. 2022;39(1):83. doi:10.1364/josab.438514
apa: Farheen, H., Leuteritz, T., Linden, S., Myroshnychenko, V., & Förstner,
J. (2022). Optimization of optical waveguide antennas for directive emission of
light. Journal of the Optical Society of America B, 39(1), 83. https://doi.org/10.1364/josab.438514
bibtex: '@article{Farheen_Leuteritz_Linden_Myroshnychenko_Förstner_2022, title={Optimization
of optical waveguide antennas for directive emission of light}, volume={39}, DOI={10.1364/josab.438514}, number={1},
journal={Journal of the Optical Society of America B}, author={Farheen, Henna
and Leuteritz, Till and Linden, Stefan and Myroshnychenko, Viktor and Förstner,
Jens}, year={2022}, pages={83} }'
chicago: 'Farheen, Henna, Till Leuteritz, Stefan Linden, Viktor Myroshnychenko,
and Jens Förstner. “Optimization of Optical Waveguide Antennas for Directive Emission
of Light.” Journal of the Optical Society of America B 39, no. 1 (2022):
83. https://doi.org/10.1364/josab.438514.'
ieee: 'H. Farheen, T. Leuteritz, S. Linden, V. Myroshnychenko, and J. Förstner,
“Optimization of optical waveguide antennas for directive emission of light,”
Journal of the Optical Society of America B, vol. 39, no. 1, p. 83, 2022,
doi: 10.1364/josab.438514.'
mla: Farheen, Henna, et al. “Optimization of Optical Waveguide Antennas for Directive
Emission of Light.” Journal of the Optical Society of America B, vol. 39,
no. 1, 2022, p. 83, doi:10.1364/josab.438514.
short: H. Farheen, T. Leuteritz, S. Linden, V. Myroshnychenko, J. Förstner, Journal
of the Optical Society of America B 39 (2022) 83.
date_created: 2021-12-08T07:14:39Z
date_updated: 2022-01-06T06:58:04Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/josab.438514
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2021-12-08T08:26:57Z
date_updated: 2021-12-08T08:26:57Z
embargo: 2022-12-08
embargo_to: open_access
file_id: '28417'
file_name: 2021-12 Farheen - JOSA B - Optimization of optical nanoantennas.pdf
file_size: 14029741
relation: main_file
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2021-12-08T08:29:49Z
date_updated: 2021-12-08T08:29:49Z
file_id: '28418'
file_name: 2021-12 Farheen - JOSA B - Optimization of optical nanoantennas SUPPLEMENTARY
MATERIAL.pdf
file_size: 655495
relation: supplementary_material
file_date_updated: 2021-12-08T08:29:49Z
has_accepted_license: '1'
intvolume: ' 39'
issue: '1'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
oa: '1'
page: '83'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Journal of the Optical Society of America B
publication_identifier:
issn:
- 0740-3224
- 1520-8540
publication_status: published
status: public
title: Optimization of optical waveguide antennas for directive emission of light
type: journal_article
user_id: '158'
volume: 39
year: '2022'
...
---
_id: '24788'
author:
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Groth, Stefan
last_name: Groth
- first_name: Daniel
full_name: Grünewald, Daniel
last_name: Grünewald
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Frank
full_name: Hannig, Frank
last_name: Hannig
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
- first_name: Franz‐Josef
full_name: Pfreundt, Franz‐Josef
last_name: Pfreundt
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Merlind
full_name: Schotte, Merlind
last_name: Schotte
- first_name: Thomas
full_name: Steinke, Thomas
last_name: Steinke
- first_name: Jürgen
full_name: Teich, Jürgen
last_name: Teich
- first_name: Martin
full_name: Weiser, Martin
last_name: Weiser
- first_name: Florian
full_name: Wende, Florian
last_name: Wende
citation:
ama: 'Alhaddad S, Förstner J, Groth S, et al. The HighPerMeshes framework for numerical
algorithms on unstructured grids. Concurrency and Computation: Practice and
Experience. Published online 2021:e6616. doi:10.1002/cpe.6616'
apa: 'Alhaddad, S., Förstner, J., Groth, S., Grünewald, D., Grynko, Y., Hannig,
F., Kenter, T., Pfreundt, F., Plessl, C., Schotte, M., Steinke, T., Teich, J.,
Weiser, M., & Wende, F. (2021). The HighPerMeshes framework for numerical
algorithms on unstructured grids. Concurrency and Computation: Practice and
Experience, e6616. https://doi.org/10.1002/cpe.6616'
bibtex: '@article{Alhaddad_Förstner_Groth_Grünewald_Grynko_Hannig_Kenter_Pfreundt_Plessl_Schotte_et
al._2021, title={The HighPerMeshes framework for numerical algorithms on unstructured
grids}, DOI={10.1002/cpe.6616},
journal={Concurrency and Computation: Practice and Experience}, author={Alhaddad,
Samer and Förstner, Jens and Groth, Stefan and Grünewald, Daniel and Grynko, Yevgen
and Hannig, Frank and Kenter, Tobias and Pfreundt, Franz‐Josef and Plessl, Christian
and Schotte, Merlind and et al.}, year={2021}, pages={e6616} }'
chicago: 'Alhaddad, Samer, Jens Förstner, Stefan Groth, Daniel Grünewald, Yevgen
Grynko, Frank Hannig, Tobias Kenter, et al. “The HighPerMeshes Framework for Numerical
Algorithms on Unstructured Grids.” Concurrency and Computation: Practice and
Experience, 2021, e6616. https://doi.org/10.1002/cpe.6616.'
ieee: 'S. Alhaddad et al., “The HighPerMeshes framework for numerical algorithms
on unstructured grids,” Concurrency and Computation: Practice and Experience,
p. e6616, 2021, doi: 10.1002/cpe.6616.'
mla: 'Alhaddad, Samer, et al. “The HighPerMeshes Framework for Numerical Algorithms
on Unstructured Grids.” Concurrency and Computation: Practice and Experience,
2021, p. e6616, doi:10.1002/cpe.6616.'
short: 'S. Alhaddad, J. Förstner, S. Groth, D. Grünewald, Y. Grynko, F. Hannig,
T. Kenter, F. Pfreundt, C. Plessl, M. Schotte, T. Steinke, J. Teich, M. Weiser,
F. Wende, Concurrency and Computation: Practice and Experience (2021) e6616.'
date_created: 2021-09-22T06:15:50Z
date_updated: 2023-09-26T11:42:19Z
ddc:
- '004'
department:
- _id: '61'
- _id: '230'
- _id: '27'
- _id: '518'
doi: 10.1002/cpe.6616
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2021-09-22T06:19:29Z
date_updated: 2021-09-22T06:19:29Z
file_id: '24789'
file_name: 2021-09 Alhaddad - Concurrency... - The HighPerMeshes framework for numerical
algorithms on unstructured grids.pdf
file_size: 2300152
relation: main_file
file_date_updated: 2021-09-22T06:19:29Z
has_accepted_license: '1'
keyword:
- tet_topic_hpc
language:
- iso: eng
oa: '1'
page: e6616
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '33'
grant_number: 01|H16005A
name: HighPerMeshes
publication: 'Concurrency and Computation: Practice and Experience'
publication_identifier:
issn:
- 1532-0626
- 1532-0634
publication_status: published
quality_controlled: '1'
status: public
title: The HighPerMeshes framework for numerical algorithms on unstructured grids
type: journal_article
user_id: '15278'
year: '2021'
...
---
_id: '21587'
abstract:
- lang: eng
text: Solving partial differential equations on unstructured grids is a cornerstone
of engineering and scientific computing. Nowadays, heterogeneous parallel platforms
with CPUs, GPUs, and FPGAs enable energy-efficient and computationally demanding
simulations. We developed the HighPerMeshes C++-embedded Domain-Specific Language
(DSL) for bridging the abstraction gap between the mathematical and algorithmic
formulation of mesh-based algorithms for PDE problems on the one hand and an increasing
number of heterogeneous platforms with their different parallel programming and
runtime models on the other hand. Thus, the HighPerMeshes DSL aims at higher productivity
in the code development process for multiple target platforms. We introduce the
concepts as well as the basic structure of the HighPerMeshes DSL, and demonstrate
its usage with three examples, a Poisson and monodomain problem, respectively,
solved by the continuous finite element method, and the discontinuous Galerkin
method for Maxwell’s equation. The mapping of the abstract algorithmic description
onto parallel hardware, including distributed memory compute clusters, is presented.
Finally, the achievable performance and scalability are demonstrated for a typical
example problem on a multi-core CPU cluster.
author:
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Groth, Stefan
last_name: Groth
- first_name: Daniel
full_name: Grünewald, Daniel
last_name: Grünewald
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Frank
full_name: Hannig, Frank
last_name: Hannig
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
- first_name: Franz-Josef
full_name: Pfreundt, Franz-Josef
last_name: Pfreundt
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Merlind
full_name: Schotte, Merlind
last_name: Schotte
- first_name: Thomas
full_name: Steinke, Thomas
last_name: Steinke
- first_name: Jürgen
full_name: Teich, Jürgen
last_name: Teich
- first_name: Martin
full_name: Weiser, Martin
last_name: Weiser
- first_name: Florian
full_name: Wende, Florian
last_name: Wende
citation:
ama: 'Alhaddad S, Förstner J, Groth S, et al. HighPerMeshes – A Domain-Specific
Language for Numerical Algorithms on Unstructured Grids. In: Euro-Par 2020:
Parallel Processing Workshops. ; 2021. doi:10.1007/978-3-030-71593-9_15'
apa: 'Alhaddad, S., Förstner, J., Groth, S., Grünewald, D., Grynko, Y., Hannig,
F., Kenter, T., Pfreundt, F.-J., Plessl, C., Schotte, M., Steinke, T., Teich,
J., Weiser, M., & Wende, F. (2021). HighPerMeshes – A Domain-Specific Language
for Numerical Algorithms on Unstructured Grids. In Euro-Par 2020: Parallel
Processing Workshops. https://doi.org/10.1007/978-3-030-71593-9_15'
bibtex: '@inbook{Alhaddad_Förstner_Groth_Grünewald_Grynko_Hannig_Kenter_Pfreundt_Plessl_Schotte_et
al._2021, place={Cham}, title={HighPerMeshes – A Domain-Specific Language for
Numerical Algorithms on Unstructured Grids}, DOI={10.1007/978-3-030-71593-9_15},
booktitle={Euro-Par 2020: Parallel Processing Workshops}, author={Alhaddad, Samer
and Förstner, Jens and Groth, Stefan and Grünewald, Daniel and Grynko, Yevgen
and Hannig, Frank and Kenter, Tobias and Pfreundt, Franz-Josef and Plessl, Christian
and Schotte, Merlind and et al.}, year={2021} }'
chicago: 'Alhaddad, Samer, Jens Förstner, Stefan Groth, Daniel Grünewald, Yevgen
Grynko, Frank Hannig, Tobias Kenter, et al. “HighPerMeshes – A Domain-Specific
Language for Numerical Algorithms on Unstructured Grids.” In Euro-Par 2020:
Parallel Processing Workshops. Cham, 2021. https://doi.org/10.1007/978-3-030-71593-9_15.'
ieee: 'S. Alhaddad et al., “HighPerMeshes – A Domain-Specific Language for
Numerical Algorithms on Unstructured Grids,” in Euro-Par 2020: Parallel Processing
Workshops, Cham, 2021.'
mla: 'Alhaddad, Samer, et al. “HighPerMeshes – A Domain-Specific Language for Numerical
Algorithms on Unstructured Grids.” Euro-Par 2020: Parallel Processing Workshops,
2021, doi:10.1007/978-3-030-71593-9_15.'
short: 'S. Alhaddad, J. Förstner, S. Groth, D. Grünewald, Y. Grynko, F. Hannig,
T. Kenter, F.-J. Pfreundt, C. Plessl, M. Schotte, T. Steinke, J. Teich, M. Weiser,
F. Wende, in: Euro-Par 2020: Parallel Processing Workshops, Cham, 2021.'
date_created: 2021-03-31T19:39:42Z
date_updated: 2023-09-26T11:40:25Z
ddc:
- '004'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '27'
- _id: '518'
doi: 10.1007/978-3-030-71593-9_15
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2021-03-31T19:42:52Z
date_updated: 2021-03-31T19:42:52Z
file_id: '21588'
file_name: 2021-03 Alhaddad2021_Chapter_HighPerMeshesADomain-SpecificL.pdf
file_size: 564398
relation: main_file
success: 1
file_date_updated: 2021-03-31T19:42:52Z
has_accepted_license: '1'
keyword:
- tet_topic_hpc
language:
- iso: eng
place: Cham
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: 'Euro-Par 2020: Parallel Processing Workshops'
publication_identifier:
isbn:
- '9783030715922'
- '9783030715939'
issn:
- 0302-9743
- 1611-3349
publication_status: published
quality_controlled: '1'
status: public
title: HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured
Grids
type: book_chapter
user_id: '15278'
year: '2021'
...
---
_id: '23816'
abstract:
- lang: eng
text: Employing the ultrafast control of electronic states of a semiconductor quantum
dot in a cavity, we introduce an approach to achieve on-demand emission of single
photons with almost perfect indistinguishability and photon pairs with near ideal
entanglement. Our scheme is based on optical excitation off resonant to a cavity
mode followed by ultrafast control of the electronic states using the time-dependent
quantum-confined Stark effect, which then allows for cavity-resonant emission.
Our theoretical analysis considers cavity-loss mechanisms, the Stark effect, and
phonon-induced dephasing, allowing realistic predictions for finite temperatures.
author:
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Dirk Florian
full_name: Heinze, Dirk Florian
id: '10904'
last_name: Heinze
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch D, Heinze DF, Förstner J, Jöns K, Schumacher S. Ultrafast electric control
of cavity mediated single-photon and photon-pair generation with semiconductor
quantum dots. Physical Review B. 2021;104:085308. doi:10.1103/physrevb.104.085308
apa: Bauch, D., Heinze, D. F., Förstner, J., Jöns, K., & Schumacher, S. (2021).
Ultrafast electric control of cavity mediated single-photon and photon-pair generation
with semiconductor quantum dots. Physical Review B, 104, 085308.
https://doi.org/10.1103/physrevb.104.085308
bibtex: '@article{Bauch_Heinze_Förstner_Jöns_Schumacher_2021, title={Ultrafast electric
control of cavity mediated single-photon and photon-pair generation with semiconductor
quantum dots}, volume={104}, DOI={10.1103/physrevb.104.085308},
journal={Physical Review B}, author={Bauch, David and Heinze, Dirk Florian and
Förstner, Jens and Jöns, Klaus and Schumacher, Stefan}, year={2021}, pages={085308}
}'
chicago: 'Bauch, David, Dirk Florian Heinze, Jens Förstner, Klaus Jöns, and Stefan
Schumacher. “Ultrafast Electric Control of Cavity Mediated Single-Photon and Photon-Pair
Generation with Semiconductor Quantum Dots.” Physical Review B 104 (2021):
085308. https://doi.org/10.1103/physrevb.104.085308.'
ieee: 'D. Bauch, D. F. Heinze, J. Förstner, K. Jöns, and S. Schumacher, “Ultrafast
electric control of cavity mediated single-photon and photon-pair generation with
semiconductor quantum dots,” Physical Review B, vol. 104, p. 085308, 2021,
doi: 10.1103/physrevb.104.085308.'
mla: Bauch, David, et al. “Ultrafast Electric Control of Cavity Mediated Single-Photon
and Photon-Pair Generation with Semiconductor Quantum Dots.” Physical Review
B, vol. 104, 2021, p. 085308, doi:10.1103/physrevb.104.085308.
short: D. Bauch, D.F. Heinze, J. Förstner, K. Jöns, S. Schumacher, Physical Review
B 104 (2021) 085308.
date_created: 2021-09-06T18:02:44Z
date_updated: 2023-04-20T15:33:52Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '429'
- _id: '623'
- _id: '35'
doi: 10.1103/physrevb.104.085308
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2021-09-07T06:32:25Z
date_updated: 2021-09-07T07:43:47Z
file_id: '23818'
file_name: 2021-08 Bauch PhysRevB.104.085308.pdf
file_size: 887439
relation: main_file
file_date_updated: 2021-09-07T07:43:47Z
has_accepted_license: '1'
intvolume: ' 104'
keyword:
- tet_topic_qd
language:
- iso: eng
oa: '1'
page: '085308'
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '60'
name: TRR 142 - Subproject A3
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
status: public
title: Ultrafast electric control of cavity mediated single-photon and photon-pair
generation with semiconductor quantum dots
type: journal_article
user_id: '16199'
volume: 104
year: '2021'
...
---
_id: '27099'
abstract:
- lang: eng
text: In our work, we have engineered low capacitance single quantum dot photodiodes
as sensor devices for the optoelectronic sampling of ultrafast electric signals.
By the Stark effect, a time-dependent electric signal is converted into a time-dependent
shift of the transition energy. This shift is measured accurately by resonant
ps laser spectroscopy with photocurrent detection. In our experiments, we sample
the laser synchronous output pulse of an ultrafast CMOS circuit with high resolution.
With our quantum dot sensor device, we were able to sample transients below 20
ps with a voltage resolution in the mV-range.
author:
- first_name: Alex
full_name: Widhalm, Alex
last_name: Widhalm
- first_name: Sebastian
full_name: Krehs, Sebastian
last_name: Krehs
- first_name: Dustin
full_name: Siebert, Dustin
last_name: Siebert
- first_name: Nand Lal
full_name: Sharma, Nand Lal
last_name: Sharma
- first_name: Timo
full_name: Langer, Timo
last_name: Langer
- first_name: Björn
full_name: Jonas, Björn
last_name: Jonas
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Andreas
full_name: Thiede, Andreas
id: '538'
last_name: Thiede
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
citation:
ama: Widhalm A, Krehs S, Siebert D, et al. Optoelectronic sampling of ultrafast
electric transients with single quantum dots. Applied Physics Letters.
2021;119:181109. doi:10.1063/5.0061358
apa: Widhalm, A., Krehs, S., Siebert, D., Sharma, N. L., Langer, T., Jonas, B.,
Reuter, D., Thiede, A., Förstner, J., & Zrenner, A. (2021). Optoelectronic
sampling of ultrafast electric transients with single quantum dots. Applied
Physics Letters, 119, 181109. https://doi.org/10.1063/5.0061358
bibtex: '@article{Widhalm_Krehs_Siebert_Sharma_Langer_Jonas_Reuter_Thiede_Förstner_Zrenner_2021,
title={Optoelectronic sampling of ultrafast electric transients with single quantum
dots}, volume={119}, DOI={10.1063/5.0061358},
journal={Applied Physics Letters}, author={Widhalm, Alex and Krehs, Sebastian
and Siebert, Dustin and Sharma, Nand Lal and Langer, Timo and Jonas, Björn and
Reuter, Dirk and Thiede, Andreas and Förstner, Jens and Zrenner, Artur}, year={2021},
pages={181109} }'
chicago: 'Widhalm, Alex, Sebastian Krehs, Dustin Siebert, Nand Lal Sharma, Timo
Langer, Björn Jonas, Dirk Reuter, Andreas Thiede, Jens Förstner, and Artur Zrenner.
“Optoelectronic Sampling of Ultrafast Electric Transients with Single Quantum
Dots.” Applied Physics Letters 119 (2021): 181109. https://doi.org/10.1063/5.0061358.'
ieee: 'A. Widhalm et al., “Optoelectronic sampling of ultrafast electric
transients with single quantum dots,” Applied Physics Letters, vol. 119,
p. 181109, 2021, doi: 10.1063/5.0061358.'
mla: Widhalm, Alex, et al. “Optoelectronic Sampling of Ultrafast Electric Transients
with Single Quantum Dots.” Applied Physics Letters, vol. 119, 2021, p.
181109, doi:10.1063/5.0061358.
short: A. Widhalm, S. Krehs, D. Siebert, N.L. Sharma, T. Langer, B. Jonas, D. Reuter,
A. Thiede, J. Förstner, A. Zrenner, Applied Physics Letters 119 (2021) 181109.
date_created: 2021-11-03T10:32:03Z
date_updated: 2023-01-24T11:11:54Z
ddc:
- '530'
department:
- _id: '15'
- _id: '230'
- _id: '61'
- _id: '51'
doi: 10.1063/5.0061358
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2021-11-04T13:46:27Z
date_updated: 2021-11-04T13:46:27Z
embargo: 2022-11-04
embargo_to: open_access
file_id: '27157'
file_name: 2021-11 Widhalm - APL - Optoelectronic sampling of ultrafast electric
transients with single quantum dots (published version).pdf
file_size: 1999652
relation: main_file
file_date_updated: 2021-11-04T13:46:27Z
has_accepted_license: '1'
intvolume: ' 119'
keyword:
- tet_topic_qd
language:
- iso: eng
page: '181109'
project:
- _id: '74'
name: TRR 142 - Subproject C4
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '60'
name: TRR 142 - Subproject A3
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
status: public
title: Optoelectronic sampling of ultrafast electric transients with single quantum
dots
type: journal_article
user_id: '158'
volume: 119
year: '2021'
...
---
_id: '28196'
abstract:
- lang: eng
text: We show that narrow trenches in a high-contrast silicon-photonics slab can
act as lossless power dividers for semi-guided waves. Reflectance and transmittance
can be easily configured by selecting the trench width. At sufficiently high angles
of incidence, the devices are lossless, apart from material attenuation and scattering
due to surface roughness. We numerically simulate a series of devices within the
full 0-to-1-range of splitting ratios, for semi-guided plane wave incidence as
well as for excitation by focused Gaussian wave bundles. Straightforward cascading
of the trenches leads to concepts for 1×M-power dividers and a polarization beam
splitter.
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Ebers L, Förstner J. Configurable lossless broadband beam splitters
for semi-guided waves in integrated silicon photonics. OSA Continuum. 2021;4(12):3081.
doi:10.1364/osac.437549
apa: Hammer, M., Ebers, L., & Förstner, J. (2021). Configurable lossless broadband
beam splitters for semi-guided waves in integrated silicon photonics. OSA Continuum,
4(12), 3081. https://doi.org/10.1364/osac.437549
bibtex: '@article{Hammer_Ebers_Förstner_2021, title={Configurable lossless broadband
beam splitters for semi-guided waves in integrated silicon photonics}, volume={4},
DOI={10.1364/osac.437549}, number={12},
journal={OSA Continuum}, author={Hammer, Manfred and Ebers, Lena and Förstner,
Jens}, year={2021}, pages={3081} }'
chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Configurable Lossless
Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.”
OSA Continuum 4, no. 12 (2021): 3081. https://doi.org/10.1364/osac.437549.'
ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam
splitters for semi-guided waves in integrated silicon photonics,” OSA Continuum,
vol. 4, no. 12, p. 3081, 2021, doi: 10.1364/osac.437549.'
mla: Hammer, Manfred, et al. “Configurable Lossless Broadband Beam Splitters for
Semi-Guided Waves in Integrated Silicon Photonics.” OSA Continuum, vol.
4, no. 12, 2021, p. 3081, doi:10.1364/osac.437549.
short: M. Hammer, L. Ebers, J. Förstner, OSA Continuum 4 (2021) 3081.
date_created: 2021-11-30T20:04:57Z
date_updated: 2022-11-18T09:58:03Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/osac.437549
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2021-11-30T20:07:53Z
date_updated: 2021-11-30T20:19:15Z
file_id: '28197'
file_name: 2021-11 Hammer - OSA Continuum - Trenches.pdf
file_size: 6618403
relation: main_file
file_date_updated: 2021-11-30T20:19:15Z
has_accepted_license: '1'
intvolume: ' 4'
issue: '12'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: '3081'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
publication: OSA Continuum
publication_identifier:
issn:
- 2578-7519
publication_status: published
status: public
title: Configurable lossless broadband beam splitters for semi-guided waves in integrated
silicon photonics
type: journal_article
user_id: '477'
volume: 4
year: '2021'
...
---
_id: '23728'
abstract:
- lang: eng
text: We demonstrate the integration of amorphous tungsten silicide superconducting
nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides.
We show proof-of-principle detection of evanescently coupled photons of 1550 nm
wavelength using bidirectional waveguide coupling for two orthogonal polarization
directions. We investigate the internal detection efficiency as well as detector
absorption using coupling-independent characterization measurements. Furthermore,
we describe strategies to improve the yield and efficiency of these devices.
article_type: original
author:
- first_name: Jan Philipp
full_name: Höpker, Jan Philipp
id: '33913'
last_name: Höpker
- first_name: Varun B
full_name: Verma, Varun B
last_name: Verma
- first_name: Maximilian
full_name: Protte, Maximilian
id: '46170'
last_name: Protte
- first_name: Raimund
full_name: Ricken, Raimund
last_name: Ricken
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Richard P
full_name: Mirin, Richard P
last_name: Mirin
- first_name: Sae
full_name: Woo Nam, Sae
last_name: Woo Nam
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: 'Höpker JP, Verma VB, Protte M, et al. Integrated superconducting nanowire
single-photon detectors on titanium in-diffused lithium niobate waveguides. Journal
of Physics: Photonics. 2021;3:034022. doi:10.1088/2515-7647/ac105b'
apa: 'Höpker, J. P., Verma, V. B., Protte, M., Ricken, R., Quiring, V., Eigner,
C., Ebers, L., Hammer, M., Förstner, J., Silberhorn, C., Mirin, R. P., Woo Nam,
S., & Bartley, T. (2021). Integrated superconducting nanowire single-photon
detectors on titanium in-diffused lithium niobate waveguides. Journal of Physics:
Photonics, 3, 034022. https://doi.org/10.1088/2515-7647/ac105b'
bibtex: '@article{Höpker_Verma_Protte_Ricken_Quiring_Eigner_Ebers_Hammer_Förstner_Silberhorn_et
al._2021, title={Integrated superconducting nanowire single-photon detectors on
titanium in-diffused lithium niobate waveguides}, volume={3}, DOI={10.1088/2515-7647/ac105b},
journal={Journal of Physics: Photonics}, author={Höpker, Jan Philipp and Verma,
Varun B and Protte, Maximilian and Ricken, Raimund and Quiring, Viktor and Eigner,
Christof and Ebers, Lena and Hammer, Manfred and Förstner, Jens and Silberhorn,
Christine and et al.}, year={2021}, pages={034022} }'
chicago: 'Höpker, Jan Philipp, Varun B Verma, Maximilian Protte, Raimund Ricken,
Viktor Quiring, Christof Eigner, Lena Ebers, et al. “Integrated Superconducting
Nanowire Single-Photon Detectors on Titanium in-Diffused Lithium Niobate Waveguides.”
Journal of Physics: Photonics 3 (2021): 034022. https://doi.org/10.1088/2515-7647/ac105b.'
ieee: 'J. P. Höpker et al., “Integrated superconducting nanowire single-photon
detectors on titanium in-diffused lithium niobate waveguides,” Journal of Physics:
Photonics, vol. 3, p. 034022, 2021, doi: 10.1088/2515-7647/ac105b.'
mla: 'Höpker, Jan Philipp, et al. “Integrated Superconducting Nanowire Single-Photon
Detectors on Titanium in-Diffused Lithium Niobate Waveguides.” Journal of Physics:
Photonics, vol. 3, 2021, p. 034022, doi:10.1088/2515-7647/ac105b.'
short: 'J.P. Höpker, V.B. Verma, M. Protte, R. Ricken, V. Quiring, C. Eigner, L.
Ebers, M. Hammer, J. Förstner, C. Silberhorn, R.P. Mirin, S. Woo Nam, T. Bartley,
Journal of Physics: Photonics 3 (2021) 034022.'
date_created: 2021-09-03T08:04:06Z
date_updated: 2022-10-25T07:34:42Z
ddc:
- '530'
department:
- _id: '15'
- _id: '61'
- _id: '230'
doi: 10.1088/2515-7647/ac105b
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2021-09-07T07:41:04Z
date_updated: 2021-09-07T07:41:04Z
file_id: '23825'
file_name: 2021-07 Höpker J._Phys._Photonics_3_034022.pdf
file_size: 1097820
relation: main_file
file_date_updated: 2021-09-07T07:41:04Z
has_accepted_license: '1'
intvolume: ' 3'
language:
- iso: eng
oa: '1'
page: '034022'
project:
- _id: '53'
name: TRR 142
publication: 'Journal of Physics: Photonics'
publication_identifier:
issn:
- 2515-7647
publication_status: published
status: public
title: Integrated superconducting nanowire single-photon detectors on titanium in-diffused
lithium niobate waveguides
type: journal_article
user_id: '49683'
volume: 3
year: '2021'
...
---
_id: '21932'
abstract:
- lang: eng
text: Gaussian-beam-like bundles of semi-guided waves propagating in a dielectric
slab can excite modes with high-order optical angular momentum supported by a
circular fiber. We consider a multimode step-index fiber with a high-index coating,
where the waves in the slab are evanescently coupled to the modes of the fiber.
Conditions for effective resonant interaction are identified. Based on a hybrid
analytical–numerical coupled mode model, our simulations predict that substantial
fractions of the input power can be focused into waves with specific orbital angular
momentum, of excellent purity, with a clear distinction between degenerate modes
with opposite vorticity.
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Ebers L, Förstner J. Resonant evanescent excitation of guided waves
with high-order optical angular momentum. Journal of the Optical Society of
America B. 2021;38(5):1717. doi:10.1364/josab.422731
apa: Hammer, M., Ebers, L., & Förstner, J. (2021). Resonant evanescent excitation
of guided waves with high-order optical angular momentum. Journal of the Optical
Society of America B, 38(5), 1717. https://doi.org/10.1364/josab.422731
bibtex: '@article{Hammer_Ebers_Förstner_2021, title={Resonant evanescent excitation
of guided waves with high-order optical angular momentum}, volume={38}, DOI={10.1364/josab.422731}, number={5},
journal={Journal of the Optical Society of America B}, author={Hammer, Manfred
and Ebers, Lena and Förstner, Jens}, year={2021}, pages={1717} }'
chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Resonant Evanescent Excitation
of Guided Waves with High-Order Optical Angular Momentum.” Journal of the Optical
Society of America B 38, no. 5 (2021): 1717. https://doi.org/10.1364/josab.422731.'
ieee: M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of guided
waves with high-order optical angular momentum,” Journal of the Optical Society
of America B, vol. 38, no. 5, p. 1717, 2021.
mla: Hammer, Manfred, et al. “Resonant Evanescent Excitation of Guided Waves with
High-Order Optical Angular Momentum.” Journal of the Optical Society of America
B, vol. 38, no. 5, 2021, p. 1717, doi:10.1364/josab.422731.
short: M. Hammer, L. Ebers, J. Förstner, Journal of the Optical Society of America
B 38 (2021) 1717.
date_created: 2021-04-30T11:54:03Z
date_updated: 2022-01-06T06:55:20Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1364/josab.422731
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2021-04-30T11:57:14Z
date_updated: 2021-04-30T11:57:14Z
file_id: '21933'
file_name: oamex.pdf
file_size: 1963211
relation: main_file
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2021-04-30T11:59:16Z
date_updated: 2021-04-30T11:59:16Z
embargo: 2022-05-01
embargo_to: open_access
file_id: '21934'
file_name: 2021-04 Hammer - JOSA B - Resonant evanescent excitation of guides waves
with high-order angular momentum.pdf
file_size: 7750006
relation: main_file
file_date_updated: 2021-04-30T11:59:16Z
has_accepted_license: '1'
intvolume: ' 38'
issue: '5'
keyword:
- tet_topic_waveguides
language:
- iso: eng
oa: '1'
page: '1717'
project:
- _id: '56'
name: TRR 142 - Project Area C
- _id: '53'
name: TRR 142
- _id: '75'
name: TRR 142 - Subproject C5
publication: Journal of the Optical Society of America B
publication_identifier:
issn:
- 0740-3224
- 1520-8540
publication_status: published
status: public
title: Resonant evanescent excitation of guided waves with high-order optical angular
momentum
type: journal_article
user_id: '158'
volume: 38
year: '2021'
...
---
_id: '21821'
abstract:
- lang: eng
text: We present a combined experimental and numerical study of the far-field emission
properties of optical travelling wave antennas made from low-loss dielectric materials.
The antennas considered here are composed of two simple building blocks, a director
and a reflector, deposited on a glass substrate. Colloidal quantum dots placed
in the feed gap between the two elements serve as internal light source. The emission
profile of the antenna is mainly formed by the director while the reflector suppresses
backward emission. Systematic studies of the director dimensions as well as variation
of antenna material show that the effective refractive index of the director primarily
governs the far-field emission pattern. Below cut off, i.e., if the director’s
effective refractive index is smaller than the refractive index of the substrate,
the main lobe results from leaky wave emission along the director. In contrast,
if the director supports a guided mode, the emission predominately originates
from the end facet of the director.
article_number: '14694'
author:
- first_name: T.
full_name: Leuteritz, T.
last_name: Leuteritz
- first_name: H.
full_name: Farheen, H.
last_name: Farheen
- first_name: S.
full_name: Qiao, S.
last_name: Qiao
- first_name: F.
full_name: Spreyer, F.
last_name: Spreyer
- first_name: Christian
full_name: Schlickriede, Christian
id: '59792'
last_name: Schlickriede
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: S.
full_name: Linden, S.
last_name: Linden
citation:
ama: Leuteritz T, Farheen H, Qiao S, et al. Dielectric travelling wave antennas
for directional light emission. Optics Express. 2021;29(10). doi:10.1364/oe.422984
apa: Leuteritz, T., Farheen, H., Qiao, S., Spreyer, F., Schlickriede, C., Zentgraf,
T., … Linden, S. (2021). Dielectric travelling wave antennas for directional light
emission. Optics Express, 29(10). https://doi.org/10.1364/oe.422984
bibtex: '@article{Leuteritz_Farheen_Qiao_Spreyer_Schlickriede_Zentgraf_Myroshnychenko_Förstner_Linden_2021,
title={Dielectric travelling wave antennas for directional light emission}, volume={29},
DOI={10.1364/oe.422984}, number={1014694},
journal={Optics Express}, author={Leuteritz, T. and Farheen, H. and Qiao, S. and
Spreyer, F. and Schlickriede, Christian and Zentgraf, Thomas and Myroshnychenko,
Viktor and Förstner, Jens and Linden, S.}, year={2021} }'
chicago: Leuteritz, T., H. Farheen, S. Qiao, F. Spreyer, Christian Schlickriede,
Thomas Zentgraf, Viktor Myroshnychenko, Jens Förstner, and S. Linden. “Dielectric
Travelling Wave Antennas for Directional Light Emission.” Optics Express
29, no. 10 (2021). https://doi.org/10.1364/oe.422984.
ieee: T. Leuteritz et al., “Dielectric travelling wave antennas for directional
light emission,” Optics Express, vol. 29, no. 10, 2021.
mla: Leuteritz, T., et al. “Dielectric Travelling Wave Antennas for Directional
Light Emission.” Optics Express, vol. 29, no. 10, 14694, 2021, doi:10.1364/oe.422984.
short: T. Leuteritz, H. Farheen, S. Qiao, F. Spreyer, C. Schlickriede, T. Zentgraf,
V. Myroshnychenko, J. Förstner, S. Linden, Optics Express 29 (2021).
date_created: 2021-04-29T06:56:40Z
date_updated: 2022-01-06T06:55:17Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '289'
doi: 10.1364/oe.422984
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2021-04-29T06:59:39Z
date_updated: 2021-04-29T06:59:39Z
file_id: '21822'
file_name: 2021-04 Leuteritz - Optics Express - Dielectric travelling wave antennas.pdf
file_size: 7464073
relation: main_file
success: 1
file_date_updated: 2021-04-29T06:59:39Z
has_accepted_license: '1'
intvolume: ' 29'
issue: '10'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Dielectric travelling wave antennas for directional light emission
type: journal_article
user_id: '30525'
volume: 29
year: '2021'
...
---
_id: '39966'
author:
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: A.
full_name: Widhalm, A.
last_name: Widhalm
- first_name: A.
full_name: Mukherjee, A.
last_name: Mukherjee
- first_name: S.
full_name: Krehs, S.
last_name: Krehs
- first_name: B.
full_name: Jonas, B.
last_name: Jonas
- first_name: K.
full_name: Spychala, K.
last_name: Spychala
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Andreas
full_name: Thiede, Andreas
id: '538'
last_name: Thiede
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
citation:
ama: 'Förstner J, Widhalm A, Mukherjee A, et al. Ultrafast electric control of a
single QD exciton. In: 11th International Conference on Quantum Dots. ;
2020.'
apa: Förstner, J., Widhalm, A., Mukherjee, A., Krehs, S., Jonas, B., Spychala, K.,
Förstner, J., Thiede, A., Reuter, D., & Zrenner, A. (2020). Ultrafast electric
control of a single QD exciton. 11th International Conference on Quantum Dots.
bibtex: '@inproceedings{Förstner_Widhalm_Mukherjee_Krehs_Jonas_Spychala_Förstner_Thiede_Reuter_Zrenner_2020,
place={Munich/Germany}, title={Ultrafast electric control of a single QD exciton},
booktitle={11th International Conference on Quantum Dots}, author={Förstner, Jens
and Widhalm, A. and Mukherjee, A. and Krehs, S. and Jonas, B. and Spychala, K.
and Förstner, Jens and Thiede, Andreas and Reuter, Dirk and Zrenner, Artur}, year={2020}
}'
chicago: Förstner, Jens, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala,
Jens Förstner, Andreas Thiede, Dirk Reuter, and Artur Zrenner. “Ultrafast Electric
Control of a Single QD Exciton.” In 11th International Conference on Quantum
Dots. Munich/Germany, 2020.
ieee: J. Förstner et al., “Ultrafast electric control of a single QD exciton,”
2020.
mla: Förstner, Jens, et al. “Ultrafast Electric Control of a Single QD Exciton.”
11th International Conference on Quantum Dots, 2020.
short: 'J. Förstner, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala,
J. Förstner, A. Thiede, D. Reuter, A. Zrenner, in: 11th International Conference
on Quantum Dots, Munich/Germany, 2020.'
date_created: 2023-01-25T11:11:42Z
date_updated: 2023-01-25T11:11:53Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '51'
language:
- iso: eng
place: Munich/Germany
publication: 11th International Conference on Quantum Dots
status: public
title: Ultrafast electric control of a single QD exciton
type: conference_abstract
user_id: '158'
year: '2020'
...
---
_id: '17322'
author:
- first_name: Amlan
full_name: Mukherjee, Amlan
last_name: Mukherjee
- first_name: Alex
full_name: Widhalm, Alex
last_name: Widhalm
- first_name: Dustin
full_name: Siebert, Dustin
last_name: Siebert
- first_name: Sebastian
full_name: Krehs, Sebastian
last_name: Krehs
- first_name: Nandlal
full_name: Sharma, Nandlal
last_name: Sharma
- first_name: Andreas
full_name: Thiede, Andreas
id: '538'
last_name: Thiede
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
citation:
ama: Mukherjee A, Widhalm A, Siebert D, et al. Electrically controlled rapid adiabatic
passage in a single quantum dot. Applied Physics Letters. 2020;116:251103.
doi:10.1063/5.0012257
apa: Mukherjee, A., Widhalm, A., Siebert, D., Krehs, S., Sharma, N., Thiede, A.,
Reuter, D., Förstner, J., & Zrenner, A. (2020). Electrically controlled rapid
adiabatic passage in a single quantum dot. Applied Physics Letters, 116,
251103. https://doi.org/10.1063/5.0012257
bibtex: '@article{Mukherjee_Widhalm_Siebert_Krehs_Sharma_Thiede_Reuter_Förstner_Zrenner_2020,
title={Electrically controlled rapid adiabatic passage in a single quantum dot},
volume={116}, DOI={10.1063/5.0012257},
journal={Applied Physics Letters}, author={Mukherjee, Amlan and Widhalm, Alex
and Siebert, Dustin and Krehs, Sebastian and Sharma, Nandlal and Thiede, Andreas
and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}, year={2020}, pages={251103}
}'
chicago: 'Mukherjee, Amlan, Alex Widhalm, Dustin Siebert, Sebastian Krehs, Nandlal
Sharma, Andreas Thiede, Dirk Reuter, Jens Förstner, and Artur Zrenner. “Electrically
Controlled Rapid Adiabatic Passage in a Single Quantum Dot.” Applied Physics
Letters 116 (2020): 251103. https://doi.org/10.1063/5.0012257.'
ieee: 'A. Mukherjee et al., “Electrically controlled rapid adiabatic passage
in a single quantum dot,” Applied Physics Letters, vol. 116, p. 251103,
2020, doi: 10.1063/5.0012257.'
mla: Mukherjee, Amlan, et al. “Electrically Controlled Rapid Adiabatic Passage in
a Single Quantum Dot.” Applied Physics Letters, vol. 116, 2020, p. 251103,
doi:10.1063/5.0012257.
short: A. Mukherjee, A. Widhalm, D. Siebert, S. Krehs, N. Sharma, A. Thiede, D.
Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 116 (2020) 251103.
date_created: 2020-06-25T12:31:42Z
date_updated: 2023-01-24T11:12:09Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '51'
doi: 10.1063/5.0012257
file:
- access_level: request
content_type: application/pdf
creator: fossie
date_created: 2020-06-25T12:45:04Z
date_updated: 2022-01-06T06:53:07Z
embargo: 2021-06-25
embargo_to: open_access
file_id: '17325'
file_name: 2020-06 Widhalm - APL - Electrically controlled RAP in single QD (official).pdf
file_size: 1359326
relation: main_file
file_date_updated: 2022-01-06T06:53:07Z
has_accepted_license: '1'
intvolume: ' 116'
keyword:
- tet_topic_qd
language:
- iso: eng
page: '251103'
project:
- _id: '56'
name: TRR 142 - Project Area C
- _id: '74'
name: TRR 142 - Subproject C4
- _id: '53'
name: TRR 142
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
status: public
title: Electrically controlled rapid adiabatic passage in a single quantum dot
type: journal_article
user_id: '158'
volume: 116
year: '2020'
...
---
_id: '21719'
abstract:
- lang: eng
text: We fabricate silicon tapers to increase the mode overlap of superconducting
detectors on Ti:LiNbO3 waveguides. Mode images show a reduction in mode size from
6 µm to 2 µm FWHM, agreeing with beam propagation simulations.
article_number: QTh7A.8
author:
- first_name: Maximilian
full_name: Protte, Maximilian
id: '46170'
last_name: Protte
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Jan Philipp
full_name: Höpker, Jan Philipp
id: '33913'
last_name: Höpker
- first_name: Maximilian
full_name: Albert, Maximilian
last_name: Albert
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: 'Protte M, Ebers L, Hammer M, et al. Towards Semiconductor-Superconductor-Crystal
Hybrid Integration for Quantum Photonics. In: OSA Quantum 2.0 Conference.
; 2020. doi:10.1364/quantum.2020.qth7a.8'
apa: Protte, M., Ebers, L., Hammer, M., Höpker, J. P., Albert, M., Quiring, V.,
Meier, C., Förstner, J., Silberhorn, C., & Bartley, T. (2020). Towards Semiconductor-Superconductor-Crystal
Hybrid Integration for Quantum Photonics. OSA Quantum 2.0 Conference, Article
QTh7A.8. https://doi.org/10.1364/quantum.2020.qth7a.8
bibtex: '@inproceedings{Protte_Ebers_Hammer_Höpker_Albert_Quiring_Meier_Förstner_Silberhorn_Bartley_2020,
title={Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum
Photonics}, DOI={10.1364/quantum.2020.qth7a.8},
number={QTh7A.8}, booktitle={OSA Quantum 2.0 Conference}, author={Protte, Maximilian
and Ebers, Lena and Hammer, Manfred and Höpker, Jan Philipp and Albert, Maximilian
and Quiring, Viktor and Meier, Cedrik and Förstner, Jens and Silberhorn, Christine
and Bartley, Tim}, year={2020} }'
chicago: Protte, Maximilian, Lena Ebers, Manfred Hammer, Jan Philipp Höpker, Maximilian
Albert, Viktor Quiring, Cedrik Meier, Jens Förstner, Christine Silberhorn, and
Tim Bartley. “Towards Semiconductor-Superconductor-Crystal Hybrid Integration
for Quantum Photonics.” In OSA Quantum 2.0 Conference, 2020. https://doi.org/10.1364/quantum.2020.qth7a.8.
ieee: 'M. Protte et al., “Towards Semiconductor-Superconductor-Crystal Hybrid
Integration for Quantum Photonics,” 2020, doi: 10.1364/quantum.2020.qth7a.8.'
mla: Protte, Maximilian, et al. “Towards Semiconductor-Superconductor-Crystal Hybrid
Integration for Quantum Photonics.” OSA Quantum 2.0 Conference, QTh7A.8,
2020, doi:10.1364/quantum.2020.qth7a.8.
short: 'M. Protte, L. Ebers, M. Hammer, J.P. Höpker, M. Albert, V. Quiring, C. Meier,
J. Förstner, C. Silberhorn, T. Bartley, in: OSA Quantum 2.0 Conference, 2020.'
date_created: 2021-04-22T15:56:45Z
date_updated: 2022-10-25T07:41:15Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '15'
doi: 10.1364/quantum.2020.qth7a.8
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2021-04-22T15:58:52Z
date_updated: 2021-04-22T15:58:52Z
file_id: '21720'
file_name: Quantum2.0-Towards SSC hybrid integration for quantum photonics[4936].pdf
file_size: 1704199
relation: main_file
success: 1
file_date_updated: 2021-04-22T15:58:52Z
has_accepted_license: '1'
keyword:
- tet_topic_waveguide
language:
- iso: eng
publication: OSA Quantum 2.0 Conference
publication_identifier:
isbn:
- '9781943580811'
publication_status: published
status: public
title: Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum
Photonics
type: conference
user_id: '49683'
year: '2020'
...
---
_id: '20372'
abstract:
- lang: eng
text: A stepwise angular spectrum method (SASM) for curved interfaces is presented
to calculate the wave propagation in planar lens-like integrated optical structures
based on photonic slab waveguides. The method is derived and illustrated for an
effective 2D setup first and then for 3D slab waveguide lenses. We employ slab
waveguides of different thicknesses connected by curved surfaces to realize a
lens-like structure. To simulate the wave propagation in 3D including reflection
and scattering losses, the stepwise angular spectrum method is combined with full
vectorial finite element computations for subproblems with lower complexity. Our
SASM results show excellent agreement with rigorous numerical simulations of the
full structures with a substantially lower computational effort and can be utilized
for the simulation-based design and optimization of complex and large scale setups.
author:
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Ebers L, Hammer M, Förstner J. Light diffraction in slab waveguide lenses simulated
with the stepwise angular spectrum method. Optics Express. 2020;28(24):36361.
doi:10.1364/oe.409612
apa: Ebers, L., Hammer, M., & Förstner, J. (2020). Light diffraction in slab
waveguide lenses simulated with the stepwise angular spectrum method. Optics
Express, 28(24), 36361. https://doi.org/10.1364/oe.409612
bibtex: '@article{Ebers_Hammer_Förstner_2020, title={Light diffraction in slab waveguide
lenses simulated with the stepwise angular spectrum method}, volume={28}, DOI={10.1364/oe.409612}, number={24},
journal={Optics Express}, author={Ebers, Lena and Hammer, Manfred and Förstner,
Jens}, year={2020}, pages={36361} }'
chicago: 'Ebers, Lena, Manfred Hammer, and Jens Förstner. “Light Diffraction in
Slab Waveguide Lenses Simulated with the Stepwise Angular Spectrum Method.” Optics
Express 28, no. 24 (2020): 36361. https://doi.org/10.1364/oe.409612.'
ieee: L. Ebers, M. Hammer, and J. Förstner, “Light diffraction in slab waveguide
lenses simulated with the stepwise angular spectrum method,” Optics Express,
vol. 28, no. 24, p. 36361, 2020.
mla: Ebers, Lena, et al. “Light Diffraction in Slab Waveguide Lenses Simulated with
the Stepwise Angular Spectrum Method.” Optics Express, vol. 28, no. 24,
2020, p. 36361, doi:10.1364/oe.409612.
short: L. Ebers, M. Hammer, J. Förstner, Optics Express 28 (2020) 36361.
date_created: 2020-11-17T09:52:47Z
date_updated: 2022-01-06T06:54:26Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/oe.409612
intvolume: ' 28'
issue: '24'
keyword:
- tet_topic_waveguides
language:
- iso: eng
page: '36361'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '74'
name: TRR 142 - Subproject C4
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Light diffraction in slab waveguide lenses simulated with the stepwise angular
spectrum method
type: journal_article
user_id: '158'
volume: 28
year: '2020'
...
---
_id: '20233'
abstract:
- lang: eng
text: The challenge of designing new tunable nonlinear dielectric materials with
tailored properties has attracted an increasing amount of interest recently. Herein,
we study the effective nonlinear dielectric response of a stochastic paraelectric-dielectric
composite consisting of equilibrium distributions of circular and partially penetrable
disks (or parallel, infinitely long, identical, partially penetrable, circular
cylinders) of a dielectric phase randomly dispersed in a continuous matrix of
a paraelectric phase. The random microstructures were generated using the Metropolis
Monte Carlo algorithm. The evaluation of the effective permittivity and tunability
were carried out by employing either a Landau thermodynamic model or its Johnson’s
approximation to describe the field-dependent permittivity of the paraelectric
phase and solving continuum-electrostatics equations using finite element calculations.
We reveal that the percolation threshold in this composite governs the critical
behavior of the effective permittivity and tunability. For microstructures below
the percolation threshold, our simulations demonstrate a strong nonlinear behaviour
of the field-dependent effective permittivity and very high tunability that increases
as a function of dielectric phase concentration. Above the percolation threshold,
the effective permittivity shows the tendency to linearization and the tunability
dramatically drops down. The highly reduced permittivity and extraordinarily high
tunability are obtained for the composites with dielectric impenetrable disks
at high concentrations, in which the triggering of the percolation transition
is avoided. The reported results cast light on distinct nonlinear behaviour of
2D and 3D stochastic composites and can guide the design of novel composites with
the controlled morphology and tailored permittivity and tunability.
author:
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Stanislav
full_name: Smirnov, Stanislav
last_name: Smirnov
- first_name: Pious Mathews Mulavarickal
full_name: Jose, Pious Mathews Mulavarickal
last_name: Jose
- first_name: Christian
full_name: Brosseau, Christian
last_name: Brosseau
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Myroshnychenko V, Smirnov S, Jose PMM, Brosseau C, Förstner J. Nonlinear dielectric
properties of random paraelectric-dielectric composites. Acta Materialia.
2020;203:116432. doi:10.1016/j.actamat.2020.10.051
apa: Myroshnychenko, V., Smirnov, S., Jose, P. M. M., Brosseau, C., & Förstner,
J. (2020). Nonlinear dielectric properties of random paraelectric-dielectric composites.
Acta Materialia, 203, 116432. https://doi.org/10.1016/j.actamat.2020.10.051
bibtex: '@article{Myroshnychenko_Smirnov_Jose_Brosseau_Förstner_2020, title={Nonlinear
dielectric properties of random paraelectric-dielectric composites}, volume={203},
DOI={10.1016/j.actamat.2020.10.051},
journal={Acta Materialia}, author={Myroshnychenko, Viktor and Smirnov, Stanislav
and Jose, Pious Mathews Mulavarickal and Brosseau, Christian and Förstner, Jens},
year={2020}, pages={116432} }'
chicago: 'Myroshnychenko, Viktor, Stanislav Smirnov, Pious Mathews Mulavarickal
Jose, Christian Brosseau, and Jens Förstner. “Nonlinear Dielectric Properties
of Random Paraelectric-Dielectric Composites.” Acta Materialia 203 (2020):
116432. https://doi.org/10.1016/j.actamat.2020.10.051.'
ieee: V. Myroshnychenko, S. Smirnov, P. M. M. Jose, C. Brosseau, and J. Förstner,
“Nonlinear dielectric properties of random paraelectric-dielectric composites,”
Acta Materialia, vol. 203, p. 116432, 2020.
mla: Myroshnychenko, Viktor, et al. “Nonlinear Dielectric Properties of Random Paraelectric-Dielectric
Composites.” Acta Materialia, vol. 203, 2020, p. 116432, doi:10.1016/j.actamat.2020.10.051.
short: V. Myroshnychenko, S. Smirnov, P.M.M. Jose, C. Brosseau, J. Förstner, Acta
Materialia 203 (2020) 116432.
date_created: 2020-10-30T13:51:42Z
date_updated: 2022-01-06T06:54:24Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1016/j.actamat.2020.10.051
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2020-10-30T13:52:58Z
date_updated: 2020-10-30T13:52:58Z
file_id: '20234'
file_name: 2020-10 Myroshnychenko - Acta Material (accepted preprint)_compressed.pdf
file_size: 3934721
relation: main_file
title: (Accepted Preprint)
file_date_updated: 2020-10-30T13:52:58Z
has_accepted_license: '1'
intvolume: ' 203'
language:
- iso: eng
oa: '1'
page: '116432'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Acta Materialia
publication_identifier:
issn:
- 1359-6454
publication_status: published
status: public
title: Nonlinear dielectric properties of random paraelectric-dielectric composites
type: journal_article
user_id: '158'
volume: 203
year: '2020'
...
---
_id: '20189'
abstract:
- lang: eng
text: A dielectric step-index optical fiber with tube-like profile is considered,
being positioned with a small gap on top of a dielectric slab waveguide. We propose
a 2.5-D hybrid analytical/numerical coupled mode model for the evanescent excitation
of the tube through semi-guided waves propagating in the slab at oblique angles.
The model combines the directional polarized modes supported by the slab with
analytic solutions for the TE-, TM-, and orbital-angular-momentum (OAM) modes
of the tube-shaped fiber. Implementational details of the scheme are discussed,
complemented by finite-element simulations for verification purposes. Our results
include configurations with resonant in-fiber excitation of OAM modes with large
orbital angular momentum and strong field enhancement.
article_number: '472'
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Ebers L, Förstner J. Hybrid coupled mode modelling of the evanescent
excitation of a dielectric tube by semi-guided waves at oblique angles. Optical
and Quantum Electronics. 2020;52. doi:10.1007/s11082-020-02595-z
apa: Hammer, M., Ebers, L., & Förstner, J. (2020). Hybrid coupled mode modelling
of the evanescent excitation of a dielectric tube by semi-guided waves at oblique
angles. Optical and Quantum Electronics, 52. https://doi.org/10.1007/s11082-020-02595-z
bibtex: '@article{Hammer_Ebers_Förstner_2020, title={Hybrid coupled mode modelling
of the evanescent excitation of a dielectric tube by semi-guided waves at oblique
angles}, volume={52}, DOI={10.1007/s11082-020-02595-z},
number={472}, journal={Optical and Quantum Electronics}, author={Hammer, Manfred
and Ebers, Lena and Förstner, Jens}, year={2020} }'
chicago: Hammer, Manfred, Lena Ebers, and Jens Förstner. “Hybrid Coupled Mode Modelling
of the Evanescent Excitation of a Dielectric Tube by Semi-Guided Waves at Oblique
Angles.” Optical and Quantum Electronics 52 (2020). https://doi.org/10.1007/s11082-020-02595-z.
ieee: M. Hammer, L. Ebers, and J. Förstner, “Hybrid coupled mode modelling of the
evanescent excitation of a dielectric tube by semi-guided waves at oblique angles,”
Optical and Quantum Electronics, vol. 52, 2020.
mla: Hammer, Manfred, et al. “Hybrid Coupled Mode Modelling of the Evanescent Excitation
of a Dielectric Tube by Semi-Guided Waves at Oblique Angles.” Optical and Quantum
Electronics, vol. 52, 472, 2020, doi:10.1007/s11082-020-02595-z.
short: M. Hammer, L. Ebers, J. Förstner, Optical and Quantum Electronics 52 (2020).
date_created: 2020-10-24T08:03:58Z
date_updated: 2022-01-06T06:54:22Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1007/s11082-020-02595-z
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2020-10-24T08:11:40Z
date_updated: 2020-10-24T08:11:40Z
file_id: '20190'
file_name: 2020-10 Hammer - OQE - Hybrid Coupled Mode Modelling Dielectric Tube.pdf
file_size: 2212769
relation: main_file
success: 1
file_date_updated: 2020-10-24T08:11:40Z
has_accepted_license: '1'
intvolume: ' 52'
keyword:
- tet_topic_waveguides
language:
- iso: eng
project:
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
- _id: '53'
name: TRR 142
publication: Optical and Quantum Electronics
publication_identifier:
issn:
- 0306-8919
- 1572-817X
publication_status: published
status: public
title: Hybrid coupled mode modelling of the evanescent excitation of a dielectric
tube by semi-guided waves at oblique angles
type: journal_article
user_id: '158'
volume: 52
year: '2020'
...
---
_id: '17803'
abstract:
- lang: eng
text: We numerically simulate multiple light scattering in discrete disordered media
represented by large clusters of irregular non-absorbing particles. The packing
density of clusters is 0.5. With such conditions diffuse scattering is significantly
reduced and light transport follows propagation channels that are determined by
the particle size and topology of the medium. This kind of localization produces
coherent backscattering intensity surge and enhanced negative polarization branch
if compared to lower density samples.
author:
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Yuriy
full_name: Shkuratov, Yuriy
last_name: Shkuratov
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Grynko Y, Shkuratov Y, Förstner J. Light backscattering from large clusters
of densely packed irregular particles. Journal of Quantitative Spectroscopy
and Radiative Transfer. 2020;255:107234. doi:10.1016/j.jqsrt.2020.107234
apa: Grynko, Y., Shkuratov, Y., & Förstner, J. (2020). Light backscattering
from large clusters of densely packed irregular particles. Journal of Quantitative
Spectroscopy and Radiative Transfer, 255, 107234. https://doi.org/10.1016/j.jqsrt.2020.107234
bibtex: '@article{Grynko_Shkuratov_Förstner_2020, title={Light backscattering from
large clusters of densely packed irregular particles}, volume={255}, DOI={10.1016/j.jqsrt.2020.107234},
journal={Journal of Quantitative Spectroscopy and Radiative Transfer}, author={Grynko,
Yevgen and Shkuratov, Yuriy and Förstner, Jens}, year={2020}, pages={107234} }'
chicago: 'Grynko, Yevgen, Yuriy Shkuratov, and Jens Förstner. “Light Backscattering
from Large Clusters of Densely Packed Irregular Particles.” Journal of Quantitative
Spectroscopy and Radiative Transfer 255 (2020): 107234. https://doi.org/10.1016/j.jqsrt.2020.107234.'
ieee: Y. Grynko, Y. Shkuratov, and J. Förstner, “Light backscattering from large
clusters of densely packed irregular particles,” Journal of Quantitative Spectroscopy
and Radiative Transfer, vol. 255, p. 107234, 2020.
mla: Grynko, Yevgen, et al. “Light Backscattering from Large Clusters of Densely
Packed Irregular Particles.” Journal of Quantitative Spectroscopy and Radiative
Transfer, vol. 255, 2020, p. 107234, doi:10.1016/j.jqsrt.2020.107234.
short: Y. Grynko, Y. Shkuratov, J. Förstner, Journal of Quantitative Spectroscopy
and Radiative Transfer 255 (2020) 107234.
date_created: 2020-08-11T09:07:04Z
date_updated: 2022-01-06T06:53:20Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1016/j.jqsrt.2020.107234
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2020-08-11T15:24:31Z
date_updated: 2020-08-11T15:24:31Z
file_id: '17814'
file_name: 2020-08 Grynko - JQSRT PREPRINT - Large Cluster.pdf
file_size: 1567605
relation: main_file
title: Preprint
file_date_updated: 2020-08-11T15:24:31Z
has_accepted_license: '1'
intvolume: ' 255'
keyword:
- tet_topic_scattering
language:
- iso: eng
oa: '1'
page: '107234'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Journal of Quantitative Spectroscopy and Radiative Transfer
publication_identifier:
issn:
- 0022-4073
publication_status: published
status: public
title: Light backscattering from large clusters of densely packed irregular particles
type: journal_article
user_id: '158'
volume: 255
year: '2020'
...
---
_id: '8634'
abstract:
- lang: eng
text: "A rectangular dielectric strip at some distance above an optical slab waveguide
is\r\nbeing considered, for evanescent excitation of the strip through the semi-guided
waves supported\r\nby the slab, at specific oblique angles. The 2.5-D configuration
shows resonant transmission\r\nproperties with respect to variations of the angle
of incidence, or of the excitation frequency,\r\nrespectively. The strength of
the interaction can be controlled by the gap between strip and slab.\r\nFor increasing
distance, our simulations predict resonant states with unit extremal reflectance\r\nof
an angular or spectral width that tends to zero, i.e. resonances with a Q-factor
that tends\r\nto infinity, while the resonance position approaches the level of
the guided mode of the strip.\r\nThis exceptionally simple system realizes what
might be termed a “bound state coupled to the\r\ncontinuum”."
article_type: original
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Hammer M, Ebers L, Förstner J. Oblique evanescent excitation of a dielectric
strip: A model resonator with an open optical cavity of unlimited Q. Optics
Express. 2019;27(7):8. doi:10.1364/OE.27.009313'
apa: 'Hammer, M., Ebers, L., & Förstner, J. (2019). Oblique evanescent excitation
of a dielectric strip: A model resonator with an open optical cavity of unlimited
Q. Optics Express, 27(7), 8. https://doi.org/10.1364/OE.27.009313'
bibtex: '@article{Hammer_Ebers_Förstner_2019, title={Oblique evanescent excitation
of a dielectric strip: A model resonator with an open optical cavity of unlimited
Q}, volume={27}, DOI={10.1364/OE.27.009313},
number={7}, journal={Optics Express}, author={Hammer, Manfred and Ebers, Lena
and Förstner, Jens}, year={2019}, pages={8} }'
chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Oblique Evanescent Excitation
of a Dielectric Strip: A Model Resonator with an Open Optical Cavity of Unlimited
Q.” Optics Express 27, no. 7 (2019): 8. https://doi.org/10.1364/OE.27.009313.'
ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Oblique evanescent excitation of a
dielectric strip: A model resonator with an open optical cavity of unlimited Q,”
Optics Express, vol. 27, no. 7, p. 8, 2019, doi: 10.1364/OE.27.009313.'
mla: 'Hammer, Manfred, et al. “Oblique Evanescent Excitation of a Dielectric Strip:
A Model Resonator with an Open Optical Cavity of Unlimited Q.” Optics Express,
vol. 27, no. 7, 2019, p. 8, doi:10.1364/OE.27.009313.'
short: M. Hammer, L. Ebers, J. Förstner, Optics Express 27 (2019) 8.
date_created: 2019-03-26T10:39:00Z
date_updated: 2023-01-03T10:34:29Z
ddc:
- '600'
department:
- _id: '61'
doi: 10.1364/OE.27.009313
file:
- access_level: closed
content_type: application/pdf
creator: nprante
date_created: 2019-03-27T13:47:50Z
date_updated: 2019-03-27T13:47:50Z
file_id: '8714'
file_name: oe-27-7-9313.pdf
file_size: 2388537
relation: main_file
success: 1
file_date_updated: 2019-03-27T13:47:50Z
has_accepted_license: '1'
intvolume: ' 27'
issue: '7'
keyword:
- tet_topic_waveguides
language:
- iso: eng
page: '8'
publication: Optics Express
status: public
title: 'Oblique evanescent excitation of a dielectric strip: A model resonator with
an open optical cavity of unlimited Q'
type: journal_article
user_id: '158'
volume: 27
year: '2019'
...
---
_id: '7720'
abstract:
- lang: ger
text: 'Die Erfindung betrifft einen optischen Übergang zwischen zwei optischen Schichtwellenleitern.
Dazu ist eine Anordnung vorgesehen aus einem ersten optischen Schichtwellenleiter
(2) und einem zweiten optischen Schichtwellenleiter (3), wobei der erste optische
Schichtwellenleiter (2) und der zweite optische Schichtwellenleiter (3) voneinander
verschiedene über ihre jeweilige Länge konstante Dicken (d, r) aufweisen, der
erste optische Schichtwellenleiter (2) mit dem zweiten optischen Schichtwellenleiter
(3) mittels einer optischen Schichtwellenleiterstruktur (4) verbunden ist, die
über ihre gesamte Länge (w) eine Dicke (h) aufweist, die zwischen der Dicke (d)
des ersten optischen Schichtwellenleiters (2) und der Dicke (r) des zweiten optischen
Schichtwellenleiters (3) liegt. Erfindungsgemäß ist die Dicke (h) der optischen
Schichtwellenleiterstruktur (4) über die gesamte Länge (w) der optischen Schichtwellenleiterstruktur
(4) konstant. Damit wird eine Möglichkeit für einen effizienten und mit geringen
Verlusten behafteten Übergang zwischen zwei optischen Schichtwellenleitern mit
unterschiedlicher Dicke bereitgestellt. '
- lang: eng
text: The invention relates to an optical junction between two optical planar waveguides.
For this purpose, an arrangement is provided of a first optical layer waveguide
(2) and a second optical slab waveguide (3), wherein the first optical layer waveguide
(2) and the second optical slab waveguide (3) different from each other is constant
over their respective length of thicknesses (d, r ) which the first optical layer
waveguide (2) with the second optical film waveguide (3) (by means of an optical
layer waveguide structure 4) is connected, which (along their entire length w)
has a thickness (h) which is between the thickness (d) the first optical waveguide
layer (2) and the thickness (r) of the second optical waveguide layer (3). According
to the invention, the thickness (h) of the optical layer waveguide structure (4)
over the entire length (w) of the optical layer waveguide structure (4) constant.
Thus, a possibility for an efficient and entailing low loss transition between
two optical planar waveguides is provided with different thickness.
application_date: 2018-04-05
application_number: '102018108110'
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
citation:
ama: Hammer M, Förstner J, Ebers L. Optical transition between two optical waveguides
layer and method for transmitting light. Published online 2019.
apa: Hammer, M., Förstner, J., & Ebers, L. (2019). Optical transition between
two optical waveguides layer and method for transmitting light.
bibtex: '@article{Hammer_Förstner_Ebers_2019, title={Optical transition between
two optical waveguides layer and method for transmitting light}, author={Hammer,
Manfred and Förstner, Jens and Ebers, Lena}, year={2019} }'
chicago: Hammer, Manfred, Jens Förstner, and Lena Ebers. “Optical Transition between
Two Optical Waveguides Layer and Method for Transmitting Light,” 2019.
ieee: M. Hammer, J. Förstner, and L. Ebers, “Optical transition between two optical
waveguides layer and method for transmitting light.” 2019.
mla: Hammer, Manfred, et al. Optical Transition between Two Optical Waveguides
Layer and Method for Transmitting Light. 2019.
short: M. Hammer, J. Förstner, L. Ebers, (2019).
date_created: 2019-02-15T10:25:59Z
date_updated: 2022-04-27T07:35:46Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2019-02-15T10:21:08Z
date_updated: 2019-02-15T10:21:08Z
file_id: '7721'
file_name: 2019-01-31 DE-Patentschrift_5349.pdf
file_size: 155604
relation: main_file
success: 1
file_date_updated: 2019-02-15T10:21:08Z
has_accepted_license: '1'
ipc: G02B 6/26
ipn: DE102018108110B3
keyword:
- tet_topic_waveguides
main_file_link:
- url: https://patents.google.com/patent/DE102018108110B3/en
page: '9'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication_date: 2019-01-31
status: public
title: Optical transition between two optical waveguides layer and method for transmitting
light
type: patent
user_id: '158'
year: '2019'
...
---
_id: '21462'
abstract:
- lang: eng
text: This paper presents a new methodology by using a multiple coil array for energy
transmission. The complex current strengths of the transmitting coil array are
calculated by having the knowledge about of the mutual inductances and the symmetries
of the transmitting coil array, so that its resulting magnetic field mainly penetrates
only the receiving coil and is strongly attenuated outside. This method is used
for an optimized wireless energy transmission but can also be implemented for
other inductive applications.
author:
- first_name: Sven
full_name: Lange, Sven
id: '38240'
last_name: Lange
- first_name: Maik-Julian
full_name: Büker, Maik-Julian
last_name: Büker
- first_name: Denis
full_name: Sievers, Denis
last_name: Sievers
- first_name: Christian
full_name: Hedayat, Christian
last_name: Hedayat
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Ulrich
full_name: Hilleringmann, Ulrich
last_name: Hilleringmann
- first_name: Thomas
full_name: Otto, Thomas
last_name: Otto
citation:
ama: 'Lange S, Büker M-J, Sievers D, et al. Method of superposing a multiple driven
magnetic field to minimize stray fields around the receiver for inductive wireless
power transmission. In: Smart Systems Integration; 13th International Conference
and Exhibition on Integration Issues of Miniaturized Systems. Berlin · Offenbach:
VDE VERLAG GMBH; 2019:1-4.'
apa: 'Lange, S., Büker, M.-J., Sievers, D., Hedayat, C., Förstner, J., Hilleringmann,
U., & Otto, T. (2019). Method of superposing a multiple driven magnetic field
to minimize stray fields around the receiver for inductive wireless power transmission.
In Smart Systems Integration; 13th International Conference and Exhibition
on Integration Issues of Miniaturized Systems (pp. 1–4). Berlin · Offenbach:
VDE VERLAG GMBH.'
bibtex: '@inproceedings{Lange_Büker_Sievers_Hedayat_Förstner_Hilleringmann_Otto_2019,
place={Berlin · Offenbach}, title={Method of superposing a multiple driven magnetic
field to minimize stray fields around the receiver for inductive wireless power
transmission}, booktitle={Smart Systems Integration; 13th International Conference
and Exhibition on Integration Issues of Miniaturized Systems}, publisher={VDE
VERLAG GMBH}, author={Lange, Sven and Büker, Maik-Julian and Sievers, Denis and
Hedayat, Christian and Förstner, Jens and Hilleringmann, Ulrich and Otto, Thomas},
year={2019}, pages={1–4} }'
chicago: 'Lange, Sven, Maik-Julian Büker, Denis Sievers, Christian Hedayat, Jens
Förstner, Ulrich Hilleringmann, and Thomas Otto. “Method of Superposing a Multiple
Driven Magnetic Field to Minimize Stray Fields around the Receiver for Inductive
Wireless Power Transmission.” In Smart Systems Integration; 13th International
Conference and Exhibition on Integration Issues of Miniaturized Systems, 1–4.
Berlin · Offenbach: VDE VERLAG GMBH, 2019.'
ieee: S. Lange et al., “Method of superposing a multiple driven magnetic
field to minimize stray fields around the receiver for inductive wireless power
transmission,” in Smart Systems Integration; 13th International Conference
and Exhibition on Integration Issues of Miniaturized Systems, Barcelona, Spain
, 2019, pp. 1–4.
mla: Lange, Sven, et al. “Method of Superposing a Multiple Driven Magnetic Field
to Minimize Stray Fields around the Receiver for Inductive Wireless Power Transmission.”
Smart Systems Integration; 13th International Conference and Exhibition on
Integration Issues of Miniaturized Systems, VDE VERLAG GMBH, 2019, pp. 1–4.
short: 'S. Lange, M.-J. Büker, D. Sievers, C. Hedayat, J. Förstner, U. Hilleringmann,
T. Otto, in: Smart Systems Integration; 13th International Conference and Exhibition
on Integration Issues of Miniaturized Systems, VDE VERLAG GMBH, Berlin · Offenbach,
2019, pp. 1–4.'
conference:
end_date: 2019-04-11
location: 'Barcelona, Spain '
name: Smart Systems Integration; 13th International Conference and Exhibition on
Integration Issues of Miniaturized Systems
start_date: 2019-04-10
date_created: 2021-03-12T09:46:55Z
date_updated: 2022-01-06T07:04:11Z
department:
- _id: '59'
- _id: '61'
- _id: '485'
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/document/8727831
page: 1-4
place: Berlin · Offenbach
publication: Smart Systems Integration; 13th International Conference and Exhibition
on Integration Issues of Miniaturized Systems
publication_identifier:
isbn:
- 978-3-8007-4919-5
publication_status: published
publisher: VDE VERLAG GMBH
related_material:
record:
- id: '9265'
relation: other
status: returned
status: public
title: Method of superposing a multiple driven magnetic field to minimize stray fields
around the receiver for inductive wireless power transmission
type: conference
user_id: '38240'
year: '2019'
...
---
_id: '8872'
abstract:
- lang: eng
text: We consider light scattering from a new type of model particle whose shape
is represented in the form of a generalized ellipsoid having N foci, where N is
greater than two. Such particles can be convex as well as concave. We use the
geometrical optics approximation to study the light scattering from 3-foci particles.
Non-zero elements of the scattering matrix are calculated for ensembles of randomly
oriented independent transparent particles, m = n + i0. Several internal reflection
orders are considered separately. It was found that the transmission-transmission
(TT) and transmission-reflectance-transmission (TRT) components dominate in the
formation of intensity of scattered light at large and small phase angles, respectively.
We found a significant role of the total internal reflections of the TRT in the
middle portion of the phase angle range. The main factors in the formation of
positive linear polarization are the R and TRT component. The TT component is
responsible for the formation of negative polarization branch at large phase angles.
author:
- first_name: Dmitriy
full_name: Stankevich, Dmitriy
last_name: Stankevich
- first_name: Larissa
full_name: Hradyska, Larissa
last_name: Hradyska
- first_name: Yuriy
full_name: Shkuratov, Yuriy
last_name: Shkuratov
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Gorden
full_name: Videen, Gorden
last_name: Videen
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Stankevich D, Hradyska L, Shkuratov Y, Grynko Y, Videen G, Förstner J. Light
scattering by 3-Foci convex and concave particles in the geometrical optics approximation.
Journal of Quantitative Spectroscopy and Radiative Transfer. 2019;231:49.
doi:10.1016/j.jqsrt.2019.04.016
apa: Stankevich, D., Hradyska, L., Shkuratov, Y., Grynko, Y., Videen, G., &
Förstner, J. (2019). Light scattering by 3-Foci convex and concave particles in
the geometrical optics approximation. Journal of Quantitative Spectroscopy
and Radiative Transfer, 231, 49. https://doi.org/10.1016/j.jqsrt.2019.04.016
bibtex: '@article{Stankevich_Hradyska_Shkuratov_Grynko_Videen_Förstner_2019, title={Light
scattering by 3-Foci convex and concave particles in the geometrical optics approximation},
volume={231}, DOI={10.1016/j.jqsrt.2019.04.016},
journal={Journal of Quantitative Spectroscopy and Radiative Transfer}, author={Stankevich,
Dmitriy and Hradyska, Larissa and Shkuratov, Yuriy and Grynko, Yevgen and Videen,
Gorden and Förstner, Jens}, year={2019}, pages={49} }'
chicago: 'Stankevich, Dmitriy, Larissa Hradyska, Yuriy Shkuratov, Yevgen Grynko,
Gorden Videen, and Jens Förstner. “Light Scattering by 3-Foci Convex and Concave
Particles in the Geometrical Optics Approximation.” Journal of Quantitative
Spectroscopy and Radiative Transfer 231 (2019): 49. https://doi.org/10.1016/j.jqsrt.2019.04.016.'
ieee: D. Stankevich, L. Hradyska, Y. Shkuratov, Y. Grynko, G. Videen, and J. Förstner,
“Light scattering by 3-Foci convex and concave particles in the geometrical optics
approximation,” Journal of Quantitative Spectroscopy and Radiative Transfer,
vol. 231, p. 49, 2019.
mla: Stankevich, Dmitriy, et al. “Light Scattering by 3-Foci Convex and Concave
Particles in the Geometrical Optics Approximation.” Journal of Quantitative
Spectroscopy and Radiative Transfer, vol. 231, 2019, p. 49, doi:10.1016/j.jqsrt.2019.04.016.
short: D. Stankevich, L. Hradyska, Y. Shkuratov, Y. Grynko, G. Videen, J. Förstner,
Journal of Quantitative Spectroscopy and Radiative Transfer 231 (2019) 49.
date_created: 2019-04-11T07:38:54Z
date_updated: 2022-01-06T07:04:04Z
department:
- _id: '61'
doi: 10.1016/j.jqsrt.2019.04.016
intvolume: ' 231'
keyword:
- tet_topic_scattering
language:
- iso: eng
page: '49'
publication: Journal of Quantitative Spectroscopy and Radiative Transfer
publication_identifier:
issn:
- 0022-4073
publication_status: published
status: public
title: Light scattering by 3-Foci convex and concave particles in the geometrical
optics approximation
type: journal_article
user_id: '158'
volume: 231
year: '2019'
...
---
_id: '14990'
abstract:
- lang: eng
text: We investigate optical microresonators consisting of either one or two coupled
rectangular strips between upper and lower slab waveguides. The cavities are evanescently
excited under oblique angles by thin-film guided, in-plane unguided waves supported
by one of the slab waveguides. Beyond a specific incidence angle, losses are fully
suppressed. The interaction between the guided mode of the cavity-strip and the
incoming slab modes leads to resonant behavior for specific incidence angles and
gaps. For a single cavity, at resonance, the input power is equally split among
each of the four output ports, while for two cavities an add-drop filter can be
realized that, at resonance, routes the incoming power completely to the forward
drop waveguide via the cavity. For both applications, the strength of the interaction
is controlled by the gaps between cavities and waveguides.
author:
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Manuel B.
full_name: Berkemeier, Manuel B.
last_name: Berkemeier
- first_name: Alexander
full_name: Menzel, Alexander
last_name: Menzel
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Ebers L, Hammer M, Berkemeier MB, Menzel A, Förstner J. Coupled microstrip-cavities
under oblique incidence of semi-guided waves: a lossless integrated optical add-drop
filter. OSA Continuum. 2019;2:3288. doi:10.1364/osac.2.003288'
apa: 'Ebers, L., Hammer, M., Berkemeier, M. B., Menzel, A., & Förstner, J. (2019).
Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless
integrated optical add-drop filter. OSA Continuum, 2, 3288. https://doi.org/10.1364/osac.2.003288'
bibtex: '@article{Ebers_Hammer_Berkemeier_Menzel_Förstner_2019, title={Coupled microstrip-cavities
under oblique incidence of semi-guided waves: a lossless integrated optical add-drop
filter}, volume={2}, DOI={10.1364/osac.2.003288},
journal={OSA Continuum}, author={Ebers, Lena and Hammer, Manfred and Berkemeier,
Manuel B. and Menzel, Alexander and Förstner, Jens}, year={2019}, pages={3288}
}'
chicago: 'Ebers, Lena, Manfred Hammer, Manuel B. Berkemeier, Alexander Menzel, and
Jens Förstner. “Coupled Microstrip-Cavities under Oblique Incidence of Semi-Guided
Waves: A Lossless Integrated Optical Add-Drop Filter.” OSA Continuum 2
(2019): 3288. https://doi.org/10.1364/osac.2.003288.'
ieee: 'L. Ebers, M. Hammer, M. B. Berkemeier, A. Menzel, and J. Förstner, “Coupled
microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated
optical add-drop filter,” OSA Continuum, vol. 2, p. 3288, 2019.'
mla: 'Ebers, Lena, et al. “Coupled Microstrip-Cavities under Oblique Incidence of
Semi-Guided Waves: A Lossless Integrated Optical Add-Drop Filter.” OSA Continuum,
vol. 2, 2019, p. 3288, doi:10.1364/osac.2.003288.'
short: L. Ebers, M. Hammer, M.B. Berkemeier, A. Menzel, J. Förstner, OSA Continuum
2 (2019) 3288.
date_created: 2019-11-15T07:21:20Z
date_updated: 2022-01-06T06:52:13Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1364/osac.2.003288
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2019-11-15T15:33:26Z
date_updated: 2019-11-15T15:33:26Z
file_id: '15012'
file_name: 2019-11-12 Ebers - Add Drop Filter - OSA continuum (official version).pdf
file_size: 882779
relation: main_file
file_date_updated: 2019-11-15T15:33:26Z
has_accepted_license: '1'
intvolume: ' 2'
keyword:
- tet_topic_waveguides
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.osapublishing.org/osac/abstract.cfm?uri=osac-2-11-3288
oa: '1'
page: '3288'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication: OSA Continuum
publication_identifier:
issn:
- 2578-7519
publication_status: published
status: public
title: 'Coupled microstrip-cavities under oblique incidence of semi-guided waves:
a lossless integrated optical add-drop filter'
type: journal_article
user_id: '158'
volume: 2
year: '2019'
...
---
_id: '12908'
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Hammer M, Ebers L, Förstner J. Oblique quasi-lossless excitation of a thin
silicon slab waveguide: a guided-wave variant of an anti-reflection coating. Journal
of the Optical Society of America B. 2019;36:2395. doi:10.1364/josab.36.002395'
apa: 'Hammer, M., Ebers, L., & Förstner, J. (2019). Oblique quasi-lossless excitation
of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection
coating. Journal of the Optical Society of America B, 36, 2395.
https://doi.org/10.1364/josab.36.002395'
bibtex: '@article{Hammer_Ebers_Förstner_2019, title={Oblique quasi-lossless excitation
of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection
coating}, volume={36}, DOI={10.1364/josab.36.002395},
journal={Journal of the Optical Society of America B}, author={Hammer, Manfred
and Ebers, Lena and Förstner, Jens}, year={2019}, pages={2395} }'
chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Oblique Quasi-Lossless
Excitation of a Thin Silicon Slab Waveguide: A Guided-Wave Variant of an Anti-Reflection
Coating.” Journal of the Optical Society of America B 36 (2019): 2395.
https://doi.org/10.1364/josab.36.002395.'
ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Oblique quasi-lossless excitation
of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection
coating,” Journal of the Optical Society of America B, vol. 36, p. 2395,
2019.'
mla: 'Hammer, Manfred, et al. “Oblique Quasi-Lossless Excitation of a Thin Silicon
Slab Waveguide: A Guided-Wave Variant of an Anti-Reflection Coating.” Journal
of the Optical Society of America B, vol. 36, 2019, p. 2395, doi:10.1364/josab.36.002395.'
short: M. Hammer, L. Ebers, J. Förstner, Journal of the Optical Society of America
B 36 (2019) 2395.
date_created: 2019-08-09T07:07:45Z
date_updated: 2022-01-06T06:51:24Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/josab.36.002395
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2019-08-09T07:09:04Z
date_updated: 2019-08-09T07:09:04Z
file_id: '12909'
file_name: 2019-07 Hammer - JOSA B - Oblique Quasi-Lossless Excitation of a Thin
Silicon Slab Waveguide (preprint).pdf
file_size: 728533
relation: main_file
file_date_updated: 2019-08-09T07:09:04Z
has_accepted_license: '1'
intvolume: ' 36'
keyword:
- tet_topic_waveguides
language:
- iso: eng
oa: '1'
page: '2395'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication: Journal of the Optical Society of America B
publication_identifier:
issn:
- 0740-3224
- 1520-8540
publication_status: published
status: public
title: 'Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave
variant of an anti-reflection coating'
type: journal_article
user_id: '158'
volume: 36
year: '2019'
...
---
_id: '1588'
abstract:
- lang: eng
text: The exploration of FPGAs as accelerators for scientific simulations has so
far mostly been focused on small kernels of methods working on regular data structures,
for example in the form of stencil computations for finite difference methods.
In computational sciences, often more advanced methods are employed that promise
better stability, convergence, locality and scaling. Unstructured meshes are shown
to be more effective and more accurate, compared to regular grids, in representing
computation domains of various shapes. Using unstructured meshes, the discontinuous
Galerkin method preserves the ability to perform explicit local update operations
for simulations in the time domain. In this work, we investigate FPGAs as target
platform for an implementation of the nodal discontinuous Galerkin method to find
time-domain solutions of Maxwell's equations in an unstructured mesh. When maximizing
data reuse and fitting constant coefficients into suitably partitioned on-chip
memory, high computational intensity allows us to implement and feed wide data
paths with hundreds of floating point operators. By decoupling off-chip memory
accesses from the computations, high memory bandwidth can be sustained, even for
the irregular access pattern required by parts of the application. Using the Intel/Altera
OpenCL SDK for FPGAs, we present different implementation variants for different
polynomial orders of the method. In different phases of the algorithm, either
computational or bandwidth limits of the Arria 10 platform are almost reached,
thus outperforming a highly multithreaded CPU implementation by around 2x.
author:
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
- first_name: Gopinath
full_name: Mahale, Gopinath
last_name: Mahale
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Christian
full_name: Schmitt, Christian
last_name: Schmitt
- first_name: Ayesha
full_name: Afzal, Ayesha
last_name: Afzal
- first_name: Frank
full_name: Hannig, Frank
last_name: Hannig
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
citation:
ama: 'Kenter T, Mahale G, Alhaddad S, et al. OpenCL-based FPGA Design to Accelerate
the Nodal Discontinuous Galerkin Method for Unstructured Meshes. In: Proc.
Int. Symp. on Field-Programmable Custom Computing Machines (FCCM). IEEE; 2018.
doi:10.1109/FCCM.2018.00037'
apa: Kenter, T., Mahale, G., Alhaddad, S., Grynko, Y., Schmitt, C., Afzal, A., Hannig,
F., Förstner, J., & Plessl, C. (2018). OpenCL-based FPGA Design to Accelerate
the Nodal Discontinuous Galerkin Method for Unstructured Meshes. Proc. Int.
Symp. on Field-Programmable Custom Computing Machines (FCCM). Proc. Int. Symp.
on Field-Programmable Custom Computing Machines (FCCM). https://doi.org/10.1109/FCCM.2018.00037
bibtex: '@inproceedings{Kenter_Mahale_Alhaddad_Grynko_Schmitt_Afzal_Hannig_Förstner_Plessl_2018,
title={OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin
Method for Unstructured Meshes}, DOI={10.1109/FCCM.2018.00037},
booktitle={Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM)},
publisher={IEEE}, author={Kenter, Tobias and Mahale, Gopinath and Alhaddad, Samer
and Grynko, Yevgen and Schmitt, Christian and Afzal, Ayesha and Hannig, Frank
and Förstner, Jens and Plessl, Christian}, year={2018} }'
chicago: Kenter, Tobias, Gopinath Mahale, Samer Alhaddad, Yevgen Grynko, Christian
Schmitt, Ayesha Afzal, Frank Hannig, Jens Förstner, and Christian Plessl. “OpenCL-Based
FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured
Meshes.” In Proc. Int. Symp. on Field-Programmable Custom Computing Machines
(FCCM). IEEE, 2018. https://doi.org/10.1109/FCCM.2018.00037.
ieee: 'T. Kenter et al., “OpenCL-based FPGA Design to Accelerate the Nodal
Discontinuous Galerkin Method for Unstructured Meshes,” presented at the Proc.
Int. Symp. on Field-Programmable Custom Computing Machines (FCCM), 2018, doi:
10.1109/FCCM.2018.00037.'
mla: Kenter, Tobias, et al. “OpenCL-Based FPGA Design to Accelerate the Nodal Discontinuous
Galerkin Method for Unstructured Meshes.” Proc. Int. Symp. on Field-Programmable
Custom Computing Machines (FCCM), IEEE, 2018, doi:10.1109/FCCM.2018.00037.
short: 'T. Kenter, G. Mahale, S. Alhaddad, Y. Grynko, C. Schmitt, A. Afzal, F. Hannig,
J. Förstner, C. Plessl, in: Proc. Int. Symp. on Field-Programmable Custom Computing
Machines (FCCM), IEEE, 2018.'
conference:
name: Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM)
date_created: 2018-03-22T10:48:01Z
date_updated: 2023-09-26T11:47:52Z
ddc:
- '000'
department:
- _id: '27'
- _id: '518'
- _id: '61'
doi: 10.1109/FCCM.2018.00037
file:
- access_level: closed
content_type: application/pdf
creator: ups
date_created: 2018-11-02T14:45:05Z
date_updated: 2018-11-02T14:45:05Z
file_id: '5282'
file_name: 08457652.pdf
file_size: 269130
relation: main_file
success: 1
file_date_updated: 2018-11-02T14:45:05Z
has_accepted_license: '1'
keyword:
- tet_topic_hpc
language:
- iso: eng
project:
- _id: '33'
grant_number: 01|H16005A
name: HighPerMeshes
- _id: '1'
grant_number: '160364472'
name: SFB 901
- _id: '4'
name: SFB 901 - Project Area C
- _id: '14'
grant_number: '160364472'
name: SFB 901 - Subproject C2
publication: Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM)
publisher: IEEE
quality_controlled: '1'
status: public
title: OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method
for Unstructured Meshes
type: conference
user_id: '15278'
year: '2018'
...
---
_id: '3427'
abstract:
- lang: eng
text: "We report on the coherent phase manipulation of quantum dot excitons by electric
means. For our\r\nexperiments, we use a low capacitance single quantum dot photodiode
which is electrically\r\ncontrolled by a custom designed SiGe:C BiCMOS chip. The
phase manipulation is performed and\r\nquantified in a Ramsey experiment, where
ultrafast transient detuning of the exciton energy is\r\nperformed synchronous
to double pulse p/2 ps laser excitation. We are able to demonstrate\r\nelectrically
controlled phase manipulations with magnitudes up to 3p within 100 ps which is
below\r\nthe dephasing time of the quantum dot exciton."
article_type: original
author:
- first_name: Alex
full_name: Widhalm, Alex
last_name: Widhalm
- first_name: Amlan
full_name: Mukherjee, Amlan
last_name: Mukherjee
- first_name: Sebastian
full_name: Krehs, Sebastian
last_name: Krehs
- first_name: Nandlal
full_name: Sharma, Nandlal
last_name: Sharma
- first_name: Peter
full_name: Kölling, Peter
last_name: Kölling
- first_name: Andreas
full_name: Thiede, Andreas
id: '538'
last_name: Thiede
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
citation:
ama: Widhalm A, Mukherjee A, Krehs S, et al. Ultrafast electric phase control of
a single exciton qubit. Applied Physics Letters. 2018;112(11):111105. doi:10.1063/1.5020364
apa: Widhalm, A., Mukherjee, A., Krehs, S., Sharma, N., Kölling, P., Thiede, A.,
Reuter, D., Förstner, J., & Zrenner, A. (2018). Ultrafast electric phase control
of a single exciton qubit. Applied Physics Letters, 112(11), 111105.
https://doi.org/10.1063/1.5020364
bibtex: '@article{Widhalm_Mukherjee_Krehs_Sharma_Kölling_Thiede_Reuter_Förstner_Zrenner_2018,
title={Ultrafast electric phase control of a single exciton qubit}, volume={112},
DOI={10.1063/1.5020364}, number={11},
journal={Applied Physics Letters}, author={Widhalm, Alex and Mukherjee, Amlan
and Krehs, Sebastian and Sharma, Nandlal and Kölling, Peter and Thiede, Andreas
and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}, year={2018}, pages={111105}
}'
chicago: 'Widhalm, Alex, Amlan Mukherjee, Sebastian Krehs, Nandlal Sharma, Peter
Kölling, Andreas Thiede, Dirk Reuter, Jens Förstner, and Artur Zrenner. “Ultrafast
Electric Phase Control of a Single Exciton Qubit.” Applied Physics Letters
112, no. 11 (2018): 111105. https://doi.org/10.1063/1.5020364.'
ieee: 'A. Widhalm et al., “Ultrafast electric phase control of a single exciton
qubit,” Applied Physics Letters, vol. 112, no. 11, p. 111105, 2018, doi:
10.1063/1.5020364.'
mla: Widhalm, Alex, et al. “Ultrafast Electric Phase Control of a Single Exciton
Qubit.” Applied Physics Letters, vol. 112, no. 11, 2018, p. 111105, doi:10.1063/1.5020364.
short: A. Widhalm, A. Mukherjee, S. Krehs, N. Sharma, P. Kölling, A. Thiede, D.
Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 112 (2018) 111105.
date_created: 2018-07-05T09:47:26Z
date_updated: 2023-01-24T11:00:08Z
ddc:
- '530'
department:
- _id: '15'
- _id: '230'
- _id: '61'
- _id: '51'
doi: 10.1063/1.5020364
file:
- access_level: request
content_type: application/pdf
creator: fossie
date_created: 2018-08-16T07:42:38Z
date_updated: 2022-01-06T06:59:16Z
embargo: 2019-03-01
embargo_to: open_access
file_id: '3914'
file_name: 2018-03 Widhalm APL Ultrafast electric phase control of a single exciton
qubit.pdf
file_size: 923692
relation: main_file
file_date_updated: 2022-01-06T06:59:16Z
has_accepted_license: '1'
intvolume: ' 112'
issue: '11'
keyword:
- tet_topic_qd
language:
- iso: eng
page: '111105'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '74'
name: TRR 142 - Subproject C4
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
publication_status: published
status: public
title: Ultrafast electric phase control of a single exciton qubit
type: journal_article
user_id: '158'
volume: 112
year: '2018'
...
---
_id: '5469'
abstract:
- lang: ger
text: In diesem Beitrag werden simulatorische und messtechnische EMV-Untersuchungen
von Gleichspannungswandlern vorgestellt. Der Fokus liegt auf leitungsgeführten
Störspannungen, ihre Abhängigkeit vom Schaltungslayout und ihre Unterdrückung
durch Filterung. Der Simulationsprozess besteht aus kombinierten Feld- und Netzwerksimulationen.
Zur Bewertung der Simulationsresultate werden zwei Prototypen gezeigt, die gute
und schlechte EMV-Eigenschaften aufweisen. Bei der Beurteilung der Resultate wird
insbesondere Wert auf die Untersuchung gelegt, inwieweit einfache Schaltungssimulationen
ausreichen, um leitungsgeführte Störspannungen korrekt vorherzusagen und wann
aufwändigere Feldsimulationen notwendig sind.
author:
- first_name: Tim
full_name: Baumgarten, Tim
last_name: Baumgarten
- first_name: Peter
full_name: Scholz, Peter
last_name: Scholz
- first_name: Denis
full_name: Sievers, Denis
last_name: Sievers
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Baumgarten T, Scholz P, Sievers D, Förstner J. Simulation leitungsgeführter
Störspannungen von DC-DC-Wandlern. In: Garbe H, ed. Elektromagnetische Verträglichkeit
- Internationale Fachmesse Und Kongress 2018. ; 2018:47.'
apa: Baumgarten, T., Scholz, P., Sievers, D., & Förstner, J. (2018). Simulation
leitungsgeführter Störspannungen von DC-DC-Wandlern. In H. Garbe (Ed.), Elektromagnetische
Verträglichkeit - Internationale Fachmesse und Kongress 2018 (p. 47). Düsseldorf.
bibtex: '@inproceedings{Baumgarten_Scholz_Sievers_Förstner_2018, title={Simulation
leitungsgeführter Störspannungen von DC-DC-Wandlern}, booktitle={Elektromagnetische
Verträglichkeit - Internationale Fachmesse und Kongress 2018}, author={Baumgarten,
Tim and Scholz, Peter and Sievers, Denis and Förstner, Jens}, editor={Garbe, HeynoEditor},
year={2018}, pages={47} }'
chicago: Baumgarten, Tim, Peter Scholz, Denis Sievers, and Jens Förstner. “Simulation
Leitungsgeführter Störspannungen von DC-DC-Wandlern.” In Elektromagnetische
Verträglichkeit - Internationale Fachmesse Und Kongress 2018, edited by Heyno
Garbe, 47, 2018.
ieee: T. Baumgarten, P. Scholz, D. Sievers, and J. Förstner, “Simulation leitungsgeführter
Störspannungen von DC-DC-Wandlern,” in Elektromagnetische Verträglichkeit -
Internationale Fachmesse und Kongress 2018, Düsseldorf, 2018, p. 47.
mla: Baumgarten, Tim, et al. “Simulation Leitungsgeführter Störspannungen von DC-DC-Wandlern.”
Elektromagnetische Verträglichkeit - Internationale Fachmesse Und Kongress
2018, edited by Heyno Garbe, 2018, p. 47.
short: 'T. Baumgarten, P. Scholz, D. Sievers, J. Förstner, in: H. Garbe (Ed.), Elektromagnetische
Verträglichkeit - Internationale Fachmesse Und Kongress 2018, 2018, p. 47.'
conference:
location: Düsseldorf
name: emv Internationale Fachmesse und Kongress 2018
date_created: 2018-11-08T23:44:10Z
date_updated: 2022-01-06T07:01:55Z
department:
- _id: '61'
editor:
- first_name: Heyno
full_name: Garbe, Heyno
last_name: Garbe
language:
- iso: eng
page: '47'
publication: Elektromagnetische Verträglichkeit - Internationale Fachmesse und Kongress
2018
publication_identifier:
isbn:
- 978-3-95735-077-0
status: public
title: Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern
type: conference
user_id: '158'
year: '2018'
...
---
_id: '4831'
abstract:
- lang: eng
text: Polarization of light is essential for some living organisms and many optical
applications. Here, an orientation dependent polarization conversion effect is
reported for light reflected from diamond‐structure‐based photonic crystals (D‐structure)
inside the scales of a beetle, the weevil Entimus imperialis. When linearly polarized
light propagates along its 〈100〉 directions, the D‐structure behaves analogous
to a half‐wave plate in reflection but based on a different mechanism. The D‐structure
rotates the polarization direction of linearly polarized light, and reflects circularly
polarized light of both handednesses without changing it. This polarization effect
is different from circular dichroism occurring in chiral biological photonic structures
discovered before. The structural origin of this effect is symmetry breaking inside
D‐structure's unit cell. This finding demonstrates that natural photonic structures
can exploit multiple functionalities inherent to the design principles of their
structural organization. Aiming at transferring the inherent polarization effect
of the biological D‐structure to technically realizable materials, three simplified
biomimetic structural models are derived and it is theoretically demonstrated
that they retain the effect. Out of these structures, functioning woodpile structure
prototypes are fabricated.
author:
- first_name: Xia
full_name: Wu, Xia
last_name: Wu
- first_name: Fernando L.
full_name: Rodríguez-Gallegos, Fernando L.
last_name: Rodríguez-Gallegos
- first_name: Marie-Christin
full_name: Heep, Marie-Christin
last_name: Heep
- first_name: Bertram
full_name: Schwind, Bertram
last_name: Schwind
- first_name: Guixin
full_name: Li, Guixin
last_name: Li
- first_name: Helge-Otto
full_name: Fabritius, Helge-Otto
last_name: Fabritius
- first_name: Georg
full_name: von Freymann, Georg
last_name: von Freymann
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Wu X, Rodríguez-Gallegos FL, Heep M-C, et al. Polarization Conversion Effect
in Biological and Synthetic Photonic Diamond Structures. Advanced Optical Materials.
2018;6(24):1800635. doi:10.1002/adom.201800635
apa: Wu, X., Rodríguez-Gallegos, F. L., Heep, M.-C., Schwind, B., Li, G., Fabritius,
H.-O., … Förstner, J. (2018). Polarization Conversion Effect in Biological and
Synthetic Photonic Diamond Structures. Advanced Optical Materials, 6(24),
1800635. https://doi.org/10.1002/adom.201800635
bibtex: '@article{Wu_Rodríguez-Gallegos_Heep_Schwind_Li_Fabritius_von Freymann_Förstner_2018,
title={Polarization Conversion Effect in Biological and Synthetic Photonic Diamond
Structures}, volume={6}, DOI={10.1002/adom.201800635},
number={24}, journal={Advanced Optical Materials}, publisher={Wiley}, author={Wu,
Xia and Rodríguez-Gallegos, Fernando L. and Heep, Marie-Christin and Schwind,
Bertram and Li, Guixin and Fabritius, Helge-Otto and von Freymann, Georg and Förstner,
Jens}, year={2018}, pages={1800635} }'
chicago: 'Wu, Xia, Fernando L. Rodríguez-Gallegos, Marie-Christin Heep, Bertram
Schwind, Guixin Li, Helge-Otto Fabritius, Georg von Freymann, and Jens Förstner.
“Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures.”
Advanced Optical Materials 6, no. 24 (2018): 1800635. https://doi.org/10.1002/adom.201800635.'
ieee: X. Wu et al., “Polarization Conversion Effect in Biological and Synthetic
Photonic Diamond Structures,” Advanced Optical Materials, vol. 6, no. 24,
p. 1800635, 2018.
mla: Wu, Xia, et al. “Polarization Conversion Effect in Biological and Synthetic
Photonic Diamond Structures.” Advanced Optical Materials, vol. 6, no. 24,
Wiley, 2018, p. 1800635, doi:10.1002/adom.201800635.
short: X. Wu, F.L. Rodríguez-Gallegos, M.-C. Heep, B. Schwind, G. Li, H.-O. Fabritius,
G. von Freymann, J. Förstner, Advanced Optical Materials 6 (2018) 1800635.
date_created: 2018-10-24T11:50:29Z
date_updated: 2022-01-06T07:01:26Z
ddc:
- '530'
department:
- _id: '61'
doi: 10.1002/adom.201800635
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2018-10-24T11:55:33Z
date_updated: 2018-10-24T11:55:33Z
file_id: '4832'
file_name: 2018-10 Xia Wu - Advanced Optical Materials - Polarization Conversion
Effect in Biological and Synthetic Photonic Diamond Structures.pdf
file_size: 4191754
relation: main_file
success: 1
file_date_updated: 2018-10-24T11:55:33Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '24'
keyword:
- tet_topic_phc
- tet_topic_bio
language:
- iso: eng
page: '1800635'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '74'
name: TRR 142 - Subproject C4
publication: Advanced Optical Materials
publication_identifier:
issn:
- 2195-1071
publication_status: published
publisher: Wiley
status: public
title: Polarization Conversion Effect in Biological and Synthetic Photonic Diamond
Structures
type: journal_article
user_id: '158'
volume: 6
year: '2018'
...
---
_id: '4581'
author:
- first_name: Yevgen
full_name: Grynko, Yevgen
id: '26059'
last_name: Grynko
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Grynko Y, Förstner J. Application of the Discontinuous Galerkin Time Domain
Method in Nonlinear Nanoplasmonics. In: 2018 IEEE 17th International Conference
on Mathematical Methods in Electromagnetic Theory (MMET). IEEE; 2018. doi:10.1109/mmet.2018.8460261'
apa: Grynko, Y., & Förstner, J. (2018). Application of the Discontinuous Galerkin
Time Domain Method in Nonlinear Nanoplasmonics. In 2018 IEEE 17th International
Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE.
https://doi.org/10.1109/mmet.2018.8460261
bibtex: '@inproceedings{Grynko_Förstner_2018, title={Application of the Discontinuous
Galerkin Time Domain Method in Nonlinear Nanoplasmonics}, DOI={10.1109/mmet.2018.8460261},
booktitle={2018 IEEE 17th International Conference on Mathematical Methods in
Electromagnetic Theory (MMET)}, publisher={IEEE}, author={Grynko, Yevgen and Förstner,
Jens}, year={2018} }'
chicago: Grynko, Yevgen, and Jens Förstner. “Application of the Discontinuous Galerkin
Time Domain Method in Nonlinear Nanoplasmonics.” In 2018 IEEE 17th International
Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE,
2018. https://doi.org/10.1109/mmet.2018.8460261.
ieee: Y. Grynko and J. Förstner, “Application of the Discontinuous Galerkin Time
Domain Method in Nonlinear Nanoplasmonics,” in 2018 IEEE 17th International
Conference on Mathematical Methods in Electromagnetic Theory (MMET), 2018.
mla: Grynko, Yevgen, and Jens Förstner. “Application of the Discontinuous Galerkin
Time Domain Method in Nonlinear Nanoplasmonics.” 2018 IEEE 17th International
Conference on Mathematical Methods in Electromagnetic Theory (MMET), IEEE,
2018, doi:10.1109/mmet.2018.8460261.
short: 'Y. Grynko, J. Förstner, in: 2018 IEEE 17th International Conference on Mathematical
Methods in Electromagnetic Theory (MMET), IEEE, 2018.'
date_created: 2018-10-04T22:21:39Z
date_updated: 2022-01-06T07:01:14Z
ddc:
- '530'
department:
- _id: '61'
doi: 10.1109/mmet.2018.8460261
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2018-10-04T22:25:59Z
date_updated: 2018-10-04T22:25:59Z
file_id: '4582'
file_name: 2018-09 Grynko - MMET (preprint).pdf
file_size: 1131678
relation: main_file
success: 1
file_date_updated: 2018-10-04T22:25:59Z
has_accepted_license: '1'
keyword:
- tet_topic_numerics
- tet_topic_shg
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic
Theory (MMET)
publication_identifier:
isbn:
- '9781538654385'
publication_status: published
publisher: IEEE
status: public
title: Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics
type: conference
user_id: '158'
year: '2018'
...
---
_id: '4579'
abstract:
- lang: eng
text: Semi-guided waves confined in dielectric slab waveguides are being considered
for oblique angles of propagation. If the waves encounter a linear discontinuity
of (mostly) arbitrary shape and extension, a variant of Snell's law applies, separately
for each pair of incoming and outgoing modes. Depending on the effective indices
involved, and on the angle of incidence, power transfer to specific outgoing waves
can be allowed or forbidden. In particular, critical angles of incidence can be
identified, beyond which any power transfer to non-guided waves is forbidden,
i.e. all radiative losses are suppressed. In that case the input power is carried
away from the discontinuity exclusively by reflected semi-guided waves in the
input slab, or by semi-guided waves that are transmitted into other outgoing slab
waveguides. Vectorial equations on a 2-D cross sectional domain apply. These are
formally identical to the equations that govern the eigenmodes of 3-D channel
waveguides. Here, however, these need to be solved not as an eigenvalue problem,
but as an inhomogeneous problem with a right-hand-side that is given by the incoming
semi-guided wave, and subject to transparent boundary conditions. The equations
resemble a standard 2-D Helmholtz problem, with an effective permittivity in place
of the actual relative permittivity. Depending on the properties of the incoming
wave, including the angle of incidence, this effective permittivity can become
locally negative, causing the suppression of propagating outgoing waves. A series
of high-contrast example configurations are discussed, where these effects lead
to - in some respects - quite surprising transmission characteristics.
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Andre
full_name: Hildebrandt, Andre
last_name: Hildebrandt
- first_name: Samer
full_name: Alhaddad, Samer
id: '42456'
last_name: Alhaddad
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: 'Hammer M, Ebers L, Hildebrandt A, Alhaddad S, Förstner J. Oblique Semi-Guided
Waves: 2-D Integrated Photonics with Negative Effective Permittivity. In: 2018
IEEE 17th International Conference on Mathematical Methods in Electromagnetic
Theory (MMET). IEEE; 2018. doi:10.1109/mmet.2018.8460455'
apa: 'Hammer, M., Ebers, L., Hildebrandt, A., Alhaddad, S., & Förstner, J. (2018).
Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity.
In 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic
Theory (MMET). IEEE. https://doi.org/10.1109/mmet.2018.8460455'
bibtex: '@inproceedings{Hammer_Ebers_Hildebrandt_Alhaddad_Förstner_2018, title={Oblique
Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity},
DOI={10.1109/mmet.2018.8460455},
booktitle={2018 IEEE 17th International Conference on Mathematical Methods in
Electromagnetic Theory (MMET)}, publisher={IEEE}, author={Hammer, Manfred and
Ebers, Lena and Hildebrandt, Andre and Alhaddad, Samer and Förstner, Jens}, year={2018}
}'
chicago: 'Hammer, Manfred, Lena Ebers, Andre Hildebrandt, Samer Alhaddad, and Jens
Förstner. “Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective
Permittivity.” In 2018 IEEE 17th International Conference on Mathematical Methods
in Electromagnetic Theory (MMET). IEEE, 2018. https://doi.org/10.1109/mmet.2018.8460455.'
ieee: 'M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, and J. Förstner, “Oblique
Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity,”
in 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic
Theory (MMET), 2018.'
mla: 'Hammer, Manfred, et al. “Oblique Semi-Guided Waves: 2-D Integrated Photonics
with Negative Effective Permittivity.” 2018 IEEE 17th International Conference
on Mathematical Methods in Electromagnetic Theory (MMET), IEEE, 2018, doi:10.1109/mmet.2018.8460455.'
short: 'M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, J. Förstner, in: 2018
IEEE 17th International Conference on Mathematical Methods in Electromagnetic
Theory (MMET), IEEE, 2018.'
date_created: 2018-10-02T17:11:59Z
date_updated: 2022-01-06T07:01:13Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1109/mmet.2018.8460455
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2018-10-02T17:13:55Z
date_updated: 2018-10-02T17:13:55Z
file_id: '4580'
file_name: 2018-09 Hammer - MMET (final draft).pdf
file_size: 242956
relation: main_file
success: 1
file_date_updated: 2018-10-02T17:13:55Z
has_accepted_license: '1'
keyword:
- tet_topic_waveguides
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic
Theory (MMET)
publication_identifier:
isbn:
- '9781538654385'
publication_status: published
publisher: IEEE
status: public
title: 'Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective
Permittivity'
type: conference
user_id: '158'
year: '2018'
...