---
_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
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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: 2024-07-22T07:43:53Z
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: '55989'
abstract:
- lang: eng
text: Phased arrays are vital in communication systems and have received significant
interest in the field of optoelectronics and photonics, enabling a wide range
of applications such as LiDAR, holography, wireless communication, etc. In this
work, we present a blazed grating antenna that is optimized to have upward radiation
efficiency as high as 80% with a compact footprint of 3.5 μm × 2 μm at an operational
wavelength of 1.55 μm. Our numerical investigations demonstrate that this antenna
in a 64 × 64 phased array configuration is capable of producing desired far-field
radiation patterns. Additionally, our antenna possesses a low side lobe level
of -9.7 dB and a negligible reflection efficiency of under 1%, making it an attractive
candidate for integrated optical phased arrays.
article_type: original
author:
- first_name: Henna
full_name: Farheen, Henna
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- first_name: Suraj
full_name: Joshi, Suraj
last_name: Joshi
- 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, Joshi S, Scheytt JC, Myroshnychenko V, Förstner J. An efficient
compact blazed grating antenna for optical phased arrays. Journal of Physics:
Photonics. 2024;6:045010. doi:10.1088/2515-7647/ad6ed4'
apa: 'Farheen, H., Joshi, S., Scheytt, J. C., Myroshnychenko, V., & Förstner,
J. (2024). An efficient compact blazed grating antenna for optical phased arrays.
Journal of Physics: Photonics, 6, 045010. https://doi.org/10.1088/2515-7647/ad6ed4'
bibtex: '@article{Farheen_Joshi_Scheytt_Myroshnychenko_Förstner_2024, title={An
efficient compact blazed grating antenna for optical phased arrays}, volume={6},
DOI={10.1088/2515-7647/ad6ed4},
journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Farheen,
Henna and Joshi, Suraj and Scheytt, J. Christoph and Myroshnychenko, Viktor and
Förstner, Jens}, year={2024}, pages={045010} }'
chicago: 'Farheen, Henna, Suraj Joshi, J. Christoph Scheytt, Viktor Myroshnychenko,
and Jens Förstner. “An Efficient Compact Blazed Grating Antenna for Optical Phased
Arrays.” Journal of Physics: Photonics 6 (2024): 045010. https://doi.org/10.1088/2515-7647/ad6ed4.'
ieee: 'H. Farheen, S. Joshi, J. C. Scheytt, V. Myroshnychenko, and J. Förstner,
“An efficient compact blazed grating antenna for optical phased arrays,” Journal
of Physics: Photonics, vol. 6, p. 045010, 2024, doi: 10.1088/2515-7647/ad6ed4.'
mla: 'Farheen, Henna, et al. “An Efficient Compact Blazed Grating Antenna for Optical
Phased Arrays.” Journal of Physics: Photonics, vol. 6, IOP Publishing,
2024, p. 045010, doi:10.1088/2515-7647/ad6ed4.'
short: 'H. Farheen, S. Joshi, J.C. Scheytt, V. Myroshnychenko, J. Förstner, Journal
of Physics: Photonics 6 (2024) 045010.'
date_created: 2024-09-02T12:08:18Z
date_updated: 2024-09-02T12:23:55Z
ddc:
- '530'
department:
- _id: '61'
- _id: '429'
- _id: '58'
doi: 10.1088/2515-7647/ad6ed4
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2024-09-02T12:13:55Z
date_updated: 2024-09-02T12:13:55Z
file_id: '55990'
file_name: 2024-08 Farheen - JPhys Photonics - An efficient compact blazed grating
antenna for optical phased arrays (official version).pdf
file_size: 1492402
relation: main_file
file_date_updated: 2024-09-02T12:13:55Z
has_accepted_license: '1'
intvolume: ' 6'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
oa: '1'
page: '045010'
project:
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _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: 'Journal of Physics: Photonics'
publication_identifier:
issn:
- 2515-7647
publication_status: published
publisher: IOP Publishing
status: public
title: An efficient compact blazed grating antenna for optical phased arrays
type: journal_article
user_id: '158'
volume: 6
year: '2024'
...
---
_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
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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: 2024-07-22T07:44:33Z
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: '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
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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: 2024-07-22T07:44:46Z
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: '158'
year: '2023'
...
---
_id: '50466'
abstract:
- lang: eng
text: A key challenge in designing efficient optical phased arrays is the lack of
a well-designed radiator. This work explores horn antennas numerically optimized
to target high upward radiation efficiency to be employed in silicon-based phased
arrays capable of producing elegant radiation patterns in the far-field.
author:
- first_name: Henna
full_name: Farheen, Henna
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- first_name: S.
full_name: Joshi, S.
last_name: Joshi
- 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, Joshi S, Scheytt JC, Myroshnychenko V, Förstner J. Increasing the
upward radiation efficiency of optical phased arrays using asymmetric silicon
horn antennas. In: 2023 IEEE Photonics Conference (IPC). IEEE; 2023. doi:10.1109/ipc57732.2023.10360519'
apa: Farheen, H., Joshi, S., Scheytt, J. C., Myroshnychenko, V., & Förstner,
J. (2023). Increasing the upward radiation efficiency of optical phased arrays
using asymmetric silicon horn antennas. 2023 IEEE Photonics Conference (IPC).
https://doi.org/10.1109/ipc57732.2023.10360519
bibtex: '@inproceedings{Farheen_Joshi_Scheytt_Myroshnychenko_Förstner_2023, title={Increasing
the upward radiation efficiency of optical phased arrays using asymmetric silicon
horn antennas}, DOI={10.1109/ipc57732.2023.10360519},
booktitle={2023 IEEE Photonics Conference (IPC)}, publisher={IEEE}, author={Farheen,
Henna and Joshi, S. and Scheytt, J. Christoph and Myroshnychenko, Viktor and Förstner,
Jens}, year={2023} }'
chicago: Farheen, Henna, S. Joshi, J. Christoph Scheytt, Viktor Myroshnychenko,
and Jens Förstner. “Increasing the Upward Radiation Efficiency of Optical Phased
Arrays Using Asymmetric Silicon Horn Antennas.” In 2023 IEEE Photonics Conference
(IPC). IEEE, 2023. https://doi.org/10.1109/ipc57732.2023.10360519.
ieee: 'H. Farheen, S. Joshi, J. C. Scheytt, V. Myroshnychenko, and J. Förstner,
“Increasing the upward radiation efficiency of optical phased arrays using asymmetric
silicon horn antennas,” 2023, doi: 10.1109/ipc57732.2023.10360519.'
mla: Farheen, Henna, et al. “Increasing the Upward Radiation Efficiency of Optical
Phased Arrays Using Asymmetric Silicon Horn Antennas.” 2023 IEEE Photonics
Conference (IPC), IEEE, 2023, doi:10.1109/ipc57732.2023.10360519.
short: 'H. Farheen, S. Joshi, J.C. Scheytt, V. Myroshnychenko, J. Förstner, in:
2023 IEEE Photonics Conference (IPC), IEEE, 2023.'
date_created: 2024-01-12T07:37:54Z
date_updated: 2024-07-22T07:48:53Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1109/ipc57732.2023.10360519
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
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: '75'
grant_number: '231447078'
name: 'TRR 142 - C05: TRR 142 - Nichtlineare optische Oberflächen basierend auf
ZnO-plasmonischen Hybrid-Nanostrukturen (C05)'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: 2023 IEEE Photonics Conference (IPC)
publication_status: published
publisher: IEEE
status: public
title: Increasing the upward radiation efficiency of optical phased arrays using asymmetric
silicon horn antennas
type: conference
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: '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: '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
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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: 2025-05-23T05:57:14Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
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
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '65'
grant_number: '231447078'
name: 'TRR 142 - A08: TRR 142 - Nichtlineare Kopplung von Zwischenschicht-Exzitonen
in van der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten
(A08)'
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: '30525'
year: '2023'
...
---
_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
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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: 2024-07-22T07:45:12Z
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'
grant_number: '231447078'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
grant_number: '231447078'
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: '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
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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: 2024-07-22T07:44:58Z
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'
grant_number: '231447078'
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: '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: Henna
full_name: Farheen, Henna
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- 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., Myroshnychenko, V., Förstner, J., & Linden, S. (2021). Dielectric travelling
wave antennas for directional light emission. Optics Express, 29(10),
Article 14694. 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, Henna 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., Henna 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, Art. no. 14694, 2021,
doi: 10.1364/oe.422984.'
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: 2024-07-22T07:45:22Z
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'
grant_number: '231447078'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
grant_number: '231447078'
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: '158'
volume: 29
year: '2021'
...
---
_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: '4165'
abstract:
- lang: eng
text: Metal nanoparticles host localized plasmon excitations that allow the manipulation
of optical fields at the nanoscale. Despite the availability of several techniques
for imaging plasmons, direct access into the symmetries of these excitations remains
elusive, thus hindering progress in the development of applications. Here, we
present a combination of angle-, polarization-, and space-resolved cathodoluminescence
spectroscopy methods to selectively access the symmetry and degeneracy of plasmonic
states in lithographically fabricated gold nanoprisms. We experimentally reveal
and spatially map degenerate states of multipole plasmon modes with nanometer
spatial resolution and further provide recipes for resolving optically dark and
out-of-plane modes. Full-wave simulations in conjunction with a simple tight-binding
model explain the complex plasmon structure in these particles and reveal intriguing
mode-symmetry phenomena. Our approach introduces systematics for a comprehensive
symmetry characterization of plasmonic states in high-symmetry nanostructures.
article_type: original
author:
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Natsuki
full_name: Nishio, Natsuki
last_name: Nishio
- first_name: F. Javier
full_name: García de Abajo, F. Javier
last_name: García de Abajo
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Naoki
full_name: Yamamoto, Naoki
last_name: Yamamoto
citation:
ama: Myroshnychenko V, Nishio N, García de Abajo FJ, Förstner J, Yamamoto N. Unveiling
and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.
ACS Nano. 2018;12(8):8436-8446. doi:10.1021/acsnano.8b03926
apa: Myroshnychenko, V., Nishio, N., García de Abajo, F. J., Förstner, J., &
Yamamoto, N. (2018). Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles
with Nanometer Resolution. ACS Nano, 12(8), 8436–8446. https://doi.org/10.1021/acsnano.8b03926
bibtex: '@article{Myroshnychenko_Nishio_García de Abajo_Förstner_Yamamoto_2018,
title={Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with
Nanometer Resolution}, volume={12}, DOI={10.1021/acsnano.8b03926},
number={8}, journal={ACS Nano}, publisher={American Chemical Society (ACS)}, author={Myroshnychenko,
Viktor and Nishio, Natsuki and García de Abajo, F. Javier and Förstner, Jens and
Yamamoto, Naoki}, year={2018}, pages={8436–8446} }'
chicago: 'Myroshnychenko, Viktor, Natsuki Nishio, F. Javier García de Abajo, Jens
Förstner, and Naoki Yamamoto. “Unveiling and Imaging Degenerate States in Plasmonic
Nanoparticles with Nanometer Resolution.” ACS Nano 12, no. 8 (2018): 8436–46.
https://doi.org/10.1021/acsnano.8b03926.'
ieee: V. Myroshnychenko, N. Nishio, F. J. García de Abajo, J. Förstner, and N. Yamamoto,
“Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer
Resolution,” ACS Nano, vol. 12, no. 8, pp. 8436–8446, 2018.
mla: Myroshnychenko, Viktor, et al. “Unveiling and Imaging Degenerate States in
Plasmonic Nanoparticles with Nanometer Resolution.” ACS Nano, vol. 12,
no. 8, American Chemical Society (ACS), 2018, pp. 8436–46, doi:10.1021/acsnano.8b03926.
short: V. Myroshnychenko, N. Nishio, F.J. García de Abajo, J. Förstner, N. Yamamoto,
ACS Nano 12 (2018) 8436–8446.
date_created: 2018-08-28T07:44:24Z
date_updated: 2022-01-06T07:00:27Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
doi: 10.1021/acsnano.8b03926
file:
- access_level: open_access
content_type: application/pdf
creator: hclaudia
date_created: 2018-08-28T07:45:47Z
date_updated: 2018-09-03T13:54:21Z
file_id: '4166'
file_name: 2018 Myroshnychenko,Nishio,Garcia de Abajo,Förstner,Yamamoto_Unveiling
and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.pdf
file_size: 4463352
relation: main_file
file_date_updated: 2018-09-03T13:54:21Z
has_accepted_license: '1'
intvolume: ' 12'
issue: '8'
keyword:
- tet_topic_plasmonics
language:
- iso: eng
oa: '1'
page: 8436-8446
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication: ACS Nano
publication_identifier:
issn:
- 1936-0851
- 1936-086X
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer
Resolution
type: journal_article
urn: '41659'
user_id: '158'
volume: 12
year: '2018'
...
---
_id: '3892'
abstract:
- lang: eng
text: Plasmon modes of the exact same individual gold nanoprisms are investigated
through combined nanometer-resolved electron energy-loss spectroscopy (EELS) and
cathodoluminescence (CL) measurements. We show that CL only probes the radiative
modes, in contrast to EELS, which additionally reveals dark modes. The combination
of both techniques on the same particles thus provides complementary information
and also demonstrates that although the radiative modes give rise to very similar
spatial distributions when probed by EELS or CL, their resonant energies appear
to be different. We trace this phenomenon back to plasmon dissipation, which affects
in different ways the plasmon signatures probed by these techniques. Our experiments
are in agreement with electromagnetic numerical simulations and can be further
interpreted within the framework of a quasistatic analytical model. We therefore
demonstrate that CL and EELS are closely related to optical scattering and extinction,
respectively, with the addition of nanometer spatial resolution.
article_type: original
author:
- first_name: Arthur
full_name: Losquin, Arthur
last_name: Losquin
- first_name: Luiz F.
full_name: Zagonel, Luiz F.
last_name: Zagonel
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
- first_name: Benito
full_name: Rodríguez-González, Benito
last_name: Rodríguez-González
- first_name: Marcel
full_name: Tencé, Marcel
last_name: Tencé
- first_name: Leonardo
full_name: Scarabelli, Leonardo
last_name: Scarabelli
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Luis M.
full_name: Liz-Marzán, Luis M.
last_name: Liz-Marzán
- first_name: F. Javier
full_name: García de Abajo, F. Javier
last_name: García de Abajo
- first_name: Odile
full_name: Stéphan, Odile
last_name: Stéphan
- first_name: Mathieu
full_name: Kociak, Mathieu
last_name: Kociak
citation:
ama: Losquin A, Zagonel LF, Myroshnychenko V, et al. Unveiling Nanometer Scale Extinction
and Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and
Cathodoluminescence Measurements. Nano Letters. 2015;15(2):1229-1237. doi:10.1021/nl5043775
apa: Losquin, A., Zagonel, L. F., Myroshnychenko, V., Rodríguez-González, B., Tencé,
M., Scarabelli, L., … Kociak, M. (2015). Unveiling Nanometer Scale Extinction
and Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and
Cathodoluminescence Measurements. Nano Letters, 15(2), 1229–1237.
https://doi.org/10.1021/nl5043775
bibtex: '@article{Losquin_Zagonel_Myroshnychenko_Rodríguez-González_Tencé_Scarabelli_Förstner_Liz-Marzán_García
de Abajo_Stéphan_et al._2015, title={Unveiling Nanometer Scale Extinction and
Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence
Measurements}, volume={15}, DOI={10.1021/nl5043775},
number={2}, journal={Nano Letters}, publisher={American Chemical Society (ACS)},
author={Losquin, Arthur and Zagonel, Luiz F. and Myroshnychenko, Viktor and Rodríguez-González,
Benito and Tencé, Marcel and Scarabelli, Leonardo and Förstner, Jens and Liz-Marzán,
Luis M. and García de Abajo, F. Javier and Stéphan, Odile and et al.}, year={2015},
pages={1229–1237} }'
chicago: 'Losquin, Arthur, Luiz F. Zagonel, Viktor Myroshnychenko, Benito Rodríguez-González,
Marcel Tencé, Leonardo Scarabelli, Jens Förstner, et al. “Unveiling Nanometer
Scale Extinction and Scattering Phenomena through Combined Electron Energy Loss
Spectroscopy and Cathodoluminescence Measurements.” Nano Letters 15, no.
2 (2015): 1229–37. https://doi.org/10.1021/nl5043775.'
ieee: A. Losquin et al., “Unveiling Nanometer Scale Extinction and Scattering
Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence
Measurements,” Nano Letters, vol. 15, no. 2, pp. 1229–1237, 2015.
mla: Losquin, Arthur, et al. “Unveiling Nanometer Scale Extinction and Scattering
Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence
Measurements.” Nano Letters, vol. 15, no. 2, American Chemical Society
(ACS), 2015, pp. 1229–37, doi:10.1021/nl5043775.
short: A. Losquin, L.F. Zagonel, V. Myroshnychenko, B. Rodríguez-González, M. Tencé,
L. Scarabelli, J. Förstner, L.M. Liz-Marzán, F.J. García de Abajo, O. Stéphan,
M. Kociak, Nano Letters 15 (2015) 1229–1237.
date_created: 2018-08-13T09:32:56Z
date_updated: 2022-01-06T06:59:50Z
ddc:
- '530'
department:
- _id: '61'
doi: 10.1021/nl5043775
file:
- access_level: open_access
content_type: application/pdf
creator: hclaudia
date_created: 2018-08-13T09:35:36Z
date_updated: 2018-09-04T20:06:07Z
file_id: '3893'
file_name: 2015-01 Losquin et al_Unveiling Nanometer Scale Extinction and Scattering
Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence
MeasurementsNanoletters_EELS and CL .pdf
file_size: 521343
relation: main_file
file_date_updated: 2018-09-04T20:06:07Z
has_accepted_license: '1'
intvolume: ' 15'
issue: '2'
keyword:
- tet_topic_plasmonics
language:
- iso: eng
oa: '1'
page: 1229-1237
publication: Nano Letters
publication_identifier:
issn:
- 1530-6984
- 1530-6992
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Unveiling Nanometer Scale Extinction and Scattering Phenomena through Combined
Electron Energy Loss Spectroscopy and Cathodoluminescence Measurements
type: journal_article
urn: '38927'
user_id: '158'
volume: 15
year: '2015'
...
---
_id: '4409'
abstract:
- lang: eng
text: "We investigate the interplay between geometrical lattice resonances and surface
plasmons mediating the\r\nemission of Smith-Purcell visible light via angle-resolved
cathodoluminescence spectroscopy. We observe\r\nstrong modulations in the dispersion
curves of Smith-Purcell radiation (SPR) when they intersect the surface\r\nplasmons
of silver gratings using a 200-kV transmission electron microscope. The decay
of the plasmons away\r\nfrom the grating is directly probed by controlling the
electron-beam position relative to the sample surface\r\nwith nanometer precision.
Our measurements are in excellent agreement with numerical simulations, clearly\r\nrevealing
the presence of characteristic Fano profiles resulting from the interference of
the light continuum\r\nand the discrete plasmon states for each direction of emission.
The intensity anomaly in the SPR emission\r\npattern can be well explained from
the geometrical consideration of the intersections between the dispersion\r\nplanes
of the SPR and surface plasmon polariton (SPP). A strong and directional SPR beam
can be realized\r\nunder the condition that the SPR dispersion plane comes in
contact with the band edge of the SPP dispersion\r\nplane."
article_number: '125144'
article_type: original
author:
- first_name: Naoki
full_name: Yamamoto, Naoki
last_name: Yamamoto
- first_name: F.
full_name: Javier García de Abajo, F.
last_name: Javier García de Abajo
- first_name: Viktor
full_name: Myroshnychenko, Viktor
id: '46371'
last_name: Myroshnychenko
citation:
ama: Yamamoto N, Javier García de Abajo F, Myroshnychenko V. Interference of surface
plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence
spectroscopy. Physical Review B. 2015;91(12). doi:10.1103/physrevb.91.125144
apa: Yamamoto, N., Javier García de Abajo, F., & Myroshnychenko, V. (2015).
Interference of surface plasmons and Smith-Purcell emission probed by angle-resolved
cathodoluminescence spectroscopy. Physical Review B, 91(12). https://doi.org/10.1103/physrevb.91.125144
bibtex: '@article{Yamamoto_Javier García de Abajo_Myroshnychenko_2015, title={Interference
of surface plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence
spectroscopy}, volume={91}, DOI={10.1103/physrevb.91.125144},
number={12125144}, journal={Physical Review B}, publisher={American Physical Society
(APS)}, author={Yamamoto, Naoki and Javier García de Abajo, F. and Myroshnychenko,
Viktor}, year={2015} }'
chicago: Yamamoto, Naoki, F. Javier García de Abajo, and Viktor Myroshnychenko.
“Interference of Surface Plasmons and Smith-Purcell Emission Probed by Angle-Resolved
Cathodoluminescence Spectroscopy.” Physical Review B 91, no. 12 (2015).
https://doi.org/10.1103/physrevb.91.125144.
ieee: N. Yamamoto, F. Javier García de Abajo, and V. Myroshnychenko, “Interference
of surface plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence
spectroscopy,” Physical Review B, vol. 91, no. 12, 2015.
mla: Yamamoto, Naoki, et al. “Interference of Surface Plasmons and Smith-Purcell
Emission Probed by Angle-Resolved Cathodoluminescence Spectroscopy.” Physical
Review B, vol. 91, no. 12, 125144, American Physical Society (APS), 2015,
doi:10.1103/physrevb.91.125144.
short: N. Yamamoto, F. Javier García de Abajo, V. Myroshnychenko, Physical Review
B 91 (2015).
date_created: 2018-09-17T08:48:52Z
date_updated: 2022-01-06T07:01:02Z
ddc:
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department:
- _id: '61'
doi: 10.1103/physrevb.91.125144
file:
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content_type: application/pdf
creator: hclaudia
date_created: 2018-09-17T08:50:03Z
date_updated: 2018-09-17T08:50:03Z
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file_name: Interference of surface plasmons and Smith-Purcell emission probed by
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intvolume: ' 91'
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language:
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publication: Physical Review B
publication_identifier:
issn:
- 1098-0121
- 1550-235X
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Interference of surface plasmons and Smith-Purcell emission probed by angle-resolved
cathodoluminescence spectroscopy
type: journal_article
user_id: '55706'
volume: 91
year: '2015'
...