---
_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: '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: '26987'
abstract:
- lang: eng
text: Optical metasurfaces are perfect candidates for the phase and amplitude modulation
of light, featuring an excellent basis for holographic applications. In this work,
we present a dual amplitude holographic scheme based on the photon sieve principle,
which is then combined with a phase hologram by utilizing the Pancharatnam–Berry
phase. We demonstrate that two types of apertures, rectangular and square shapes
in a gold film filled with silicon nanoantennas are sufficient to create two amplitude
holograms at two different wavelengths in the visible, multiplexed with an additional
phase-only hologram. The nanoantennas are tailored to adjust the spectral transmittance
of the apertures, enabling the wavelength sensitivity. The phase-only hologram
is implemented by utilizing the anisotropic rectangular structure. Interestingly,
such three holograms have quantitative mathematical correlations with each other.
Thus, the flexibility of polarization and wavelength channels can be utilized
with custom-tailored features to achieve such amplitude and phase holography simultaneously
without sacrificing any space-bandwidth product. The present scheme has the potential
to store different pieces of information which can be displayed separately by
switching the wavelength or the polarization state of the reading light beam.
author:
- first_name: Daniel
full_name: Frese, Daniel
last_name: Frese
- first_name: Basudeb
full_name: Sain, Basudeb
last_name: Sain
- first_name: Hongqiang
full_name: Zhou, Hongqiang
last_name: Zhou
- first_name: Yongtian
full_name: Wang, Yongtian
last_name: Wang
- first_name: Lingling
full_name: Huang, Lingling
last_name: Huang
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: Frese D, Sain B, Zhou H, Wang Y, Huang L, Zentgraf T. A wavelength and polarization
selective photon sieve for holographic applications. Nanophotonics. 2021;10(18):4543-4550.
doi:10.1515/nanoph-2021-0440
apa: Frese, D., Sain, B., Zhou, H., Wang, Y., Huang, L., & Zentgraf, T. (2021).
A wavelength and polarization selective photon sieve for holographic applications.
Nanophotonics, 10(18), 4543–4550. https://doi.org/10.1515/nanoph-2021-0440
bibtex: '@article{Frese_Sain_Zhou_Wang_Huang_Zentgraf_2021, title={A wavelength
and polarization selective photon sieve for holographic applications}, volume={10},
DOI={10.1515/nanoph-2021-0440},
number={18}, journal={Nanophotonics}, publisher={De Gruyter}, author={Frese, Daniel
and Sain, Basudeb and Zhou, Hongqiang and Wang, Yongtian and Huang, Lingling and
Zentgraf, Thomas}, year={2021}, pages={4543–4550} }'
chicago: 'Frese, Daniel, Basudeb Sain, Hongqiang Zhou, Yongtian Wang, Lingling Huang,
and Thomas Zentgraf. “A Wavelength and Polarization Selective Photon Sieve for
Holographic Applications.” Nanophotonics 10, no. 18 (2021): 4543–50. https://doi.org/10.1515/nanoph-2021-0440.'
ieee: 'D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, and T. Zentgraf, “A wavelength
and polarization selective photon sieve for holographic applications,” Nanophotonics,
vol. 10, no. 18, pp. 4543–4550, 2021, doi: 10.1515/nanoph-2021-0440.'
mla: Frese, Daniel, et al. “A Wavelength and Polarization Selective Photon Sieve
for Holographic Applications.” Nanophotonics, vol. 10, no. 18, De Gruyter,
2021, pp. 4543–50, doi:10.1515/nanoph-2021-0440.
short: D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, T. Zentgraf, Nanophotonics
10 (2021) 4543–4550.
date_created: 2021-10-28T07:15:52Z
date_updated: 2022-01-20T07:33:16Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
doi: 10.1515/nanoph-2021-0440
funded_apc: '1'
intvolume: ' 10'
issue: '18'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0440/html
oa: '1'
page: 4543-4550
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '65'
name: TRR 142 - Subproject A8
publication: Nanophotonics
publication_identifier:
issn:
- 2192-8614
- 2192-8606
publication_status: published
publisher: De Gruyter
quality_controlled: '1'
status: public
title: A wavelength and polarization selective photon sieve for holographic applications
type: journal_article
user_id: '30525'
volume: 10
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: '25227'
abstract:
- lang: eng
text: AbstractQuantum well (QW) heterostructures
have been extensively used for the realization of a wide range of optical and
electronic devices. Exploiting their potential for further improvement and development
requires a fundamental understanding of their electronic structure. So far, the
most commonly used experimental techniques for this purpose have been all-optical
spectroscopy methods that, however, are generally averaging in momentum space.
Additional information can be gained by angle-resolved photoelectron spectroscopy
(ARPES), which measures the electronic structure with momentum resolution. Here
we report on the use of extremely low-energy ARPES (photon energy ~ 7 eV) to increase
depth sensitivity and access buried QW states, located at 3 nm and 6 nm below
the surface of cubic-GaN/AlN and GaAs/AlGaAs heterostructures, respectively. We
find that the QW states in cubic-GaN/AlN can indeed be observed, but not their
energy dispersion, because of the high surface roughness. The GaAs/AlGaAs QW states,
on the other hand, are buried too deep to be detected by extremely low-energy
ARPES. Since the sample surface is much flatter, the ARPES spectra of the GaAs/AlGaAs
show distinct features in momentum space, which can be reconducted to the band
structure of the topmost surface layer of the QW structure. Our results provide
important information about the samples’ properties required to perform extremely
low-energy ARPES experiments on electronic states buried in semiconductor heterostructures.
article_number: '19081'
article_type: original
author:
- first_name: Mahdi
full_name: Hajlaoui, Mahdi
last_name: Hajlaoui
- first_name: Stefano
full_name: Ponzoni, Stefano
last_name: Ponzoni
- first_name: Michael
full_name: Deppe, Michael
last_name: Deppe
- first_name: Tobias
full_name: Henksmeier, Tobias
last_name: Henksmeier
- first_name: Donat Josef
full_name: As, Donat Josef
id: '14'
last_name: As
orcid: 0000-0003-1121-3565
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Gunther
full_name: Springholz, Gunther
last_name: Springholz
- first_name: Claus Michael
full_name: Schneider, Claus Michael
last_name: Schneider
- first_name: Stefan
full_name: Cramm, Stefan
last_name: Cramm
- first_name: Mirko
full_name: Cinchetti, Mirko
last_name: Cinchetti
citation:
ama: Hajlaoui M, Ponzoni S, Deppe M, et al. Extremely low-energy ARPES of quantum
well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures. Scientific Reports.
2021;11. doi:10.1038/s41598-021-98569-6
apa: Hajlaoui, M., Ponzoni, S., Deppe, M., Henksmeier, T., As, D. J., Reuter, D.,
Zentgraf, T., Springholz, G., Schneider, C. M., Cramm, S., & Cinchetti, M.
(2021). Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and
GaAs/AlGaAs heterostructures. Scientific Reports, 11, Article 19081.
https://doi.org/10.1038/s41598-021-98569-6
bibtex: '@article{Hajlaoui_Ponzoni_Deppe_Henksmeier_As_Reuter_Zentgraf_Springholz_Schneider_Cramm_et
al._2021, title={Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN
and GaAs/AlGaAs heterostructures}, volume={11}, DOI={10.1038/s41598-021-98569-6},
number={19081}, journal={Scientific Reports}, author={Hajlaoui, Mahdi and Ponzoni,
Stefano and Deppe, Michael and Henksmeier, Tobias and As, Donat Josef and Reuter,
Dirk and Zentgraf, Thomas and Springholz, Gunther and Schneider, Claus Michael
and Cramm, Stefan and et al.}, year={2021} }'
chicago: Hajlaoui, Mahdi, Stefano Ponzoni, Michael Deppe, Tobias Henksmeier, Donat
Josef As, Dirk Reuter, Thomas Zentgraf, et al. “Extremely Low-Energy ARPES of
Quantum Well States in Cubic-GaN/AlN and GaAs/AlGaAs Heterostructures.” Scientific
Reports 11 (2021). https://doi.org/10.1038/s41598-021-98569-6.
ieee: 'M. Hajlaoui et al., “Extremely low-energy ARPES of quantum well states
in cubic-GaN/AlN and GaAs/AlGaAs heterostructures,” Scientific Reports,
vol. 11, Art. no. 19081, 2021, doi: 10.1038/s41598-021-98569-6.'
mla: Hajlaoui, Mahdi, et al. “Extremely Low-Energy ARPES of Quantum Well States
in Cubic-GaN/AlN and GaAs/AlGaAs Heterostructures.” Scientific Reports,
vol. 11, 19081, 2021, doi:10.1038/s41598-021-98569-6.
short: M. Hajlaoui, S. Ponzoni, M. Deppe, T. Henksmeier, D.J. As, D. Reuter, T.
Zentgraf, G. Springholz, C.M. Schneider, S. Cramm, M. Cinchetti, Scientific Reports
11 (2021).
date_created: 2021-10-01T07:29:15Z
date_updated: 2023-10-09T09:15:12Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
doi: 10.1038/s41598-021-98569-6
intvolume: ' 11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.nature.com/articles/s41598-021-98569-6
oa: '1'
project:
- _id: '53'
grant_number: '231447078'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '65'
grant_number: '231447078'
name: TRR 142 - Subproject A8
- _id: '55'
name: TRR 142 - Project Area B
- _id: '67'
name: TRR 142 - Subproject B2
- _id: '63'
grant_number: '231447078'
name: TRR 142 - Subproject A6
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
quality_controlled: '1'
status: public
title: Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs
heterostructures
type: journal_article
user_id: '14931'
volume: 11
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: 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: '26889'
author:
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Jan
full_name: Sperling, Jan
id: '75127'
last_name: Sperling
orcid: 0000-0002-5844-3205
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Alessandro
full_name: Ferreri, Alessandro
id: '65609'
last_name: Ferreri
- first_name: Polina
full_name: Sharapova, Polina
id: '60286'
last_name: Sharapova
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: 'Luo KH, Santandrea M, Stefszky M, et al. Quantum optical coherence: From linear
to nonlinear interferometers. Physical Review A. Published online 2021.
doi:10.1103/physreva.104.043707'
apa: 'Luo, K. H., Santandrea, M., Stefszky, M., Sperling, J., Massaro, M., Ferreri,
A., Sharapova, P., Herrmann, H., & Silberhorn, C. (2021). Quantum optical
coherence: From linear to nonlinear interferometers. Physical Review A.
https://doi.org/10.1103/physreva.104.043707'
bibtex: '@article{Luo_Santandrea_Stefszky_Sperling_Massaro_Ferreri_Sharapova_Herrmann_Silberhorn_2021,
title={Quantum optical coherence: From linear to nonlinear interferometers}, DOI={10.1103/physreva.104.043707},
journal={Physical Review A}, author={Luo, Kai Hong and Santandrea, Matteo and
Stefszky, Michael and Sperling, Jan and Massaro, Marcello and Ferreri, Alessandro
and Sharapova, Polina and Herrmann, Harald and Silberhorn, Christine}, year={2021}
}'
chicago: 'Luo, Kai Hong, Matteo Santandrea, Michael Stefszky, Jan Sperling, Marcello
Massaro, Alessandro Ferreri, Polina Sharapova, Harald Herrmann, and Christine
Silberhorn. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.”
Physical Review A, 2021. https://doi.org/10.1103/physreva.104.043707.'
ieee: 'K. H. Luo et al., “Quantum optical coherence: From linear to nonlinear
interferometers,” Physical Review A, 2021, doi: 10.1103/physreva.104.043707.'
mla: 'Luo, Kai Hong, et al. “Quantum Optical Coherence: From Linear to Nonlinear
Interferometers.” Physical Review A, 2021, doi:10.1103/physreva.104.043707.'
short: K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri,
P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).
date_created: 2021-10-26T12:42:16Z
date_updated: 2023-04-20T15:08:25Z
department:
- _id: '15'
- _id: '170'
- _id: '569'
- _id: '706'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1103/physreva.104.043707
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '72'
name: 'TRR 142 - C2: TRR 142 - Subproject C2'
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
status: public
title: 'Quantum optical coherence: From linear to nonlinear interferometers'
type: journal_article
user_id: '16199'
year: '2021'
...
---
_id: '26283'
author:
- first_name: Carolin
full_name: Lüders, Carolin
last_name: Lüders
- first_name: Matthias
full_name: Pukrop, Matthias
id: '64535'
last_name: Pukrop
- first_name: Elena
full_name: Rozas, Elena
last_name: Rozas
- first_name: Christian
full_name: Schneider, Christian
last_name: Schneider
- first_name: Sven
full_name: Höfling, Sven
last_name: Höfling
- first_name: Jan
full_name: Sperling, Jan
id: '75127'
last_name: Sperling
orcid: 0000-0002-5844-3205
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Marc
full_name: Aßmann, Marc
last_name: Aßmann
citation:
ama: Lüders C, Pukrop M, Rozas E, et al. Quantifying Quantum Coherence in Polariton
Condensates. PRX Quantum. Published online 2021. doi:10.1103/prxquantum.2.030320
apa: Lüders, C., Pukrop, M., Rozas, E., Schneider, C., Höfling, S., Sperling, J.,
Schumacher, S., & Aßmann, M. (2021). Quantifying Quantum Coherence in Polariton
Condensates. PRX Quantum. https://doi.org/10.1103/prxquantum.2.030320
bibtex: '@article{Lüders_Pukrop_Rozas_Schneider_Höfling_Sperling_Schumacher_Aßmann_2021,
title={Quantifying Quantum Coherence in Polariton Condensates}, DOI={10.1103/prxquantum.2.030320},
journal={PRX Quantum}, author={Lüders, Carolin and Pukrop, Matthias and Rozas,
Elena and Schneider, Christian and Höfling, Sven and Sperling, Jan and Schumacher,
Stefan and Aßmann, Marc}, year={2021} }'
chicago: Lüders, Carolin, Matthias Pukrop, Elena Rozas, Christian Schneider, Sven
Höfling, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Quantifying Quantum
Coherence in Polariton Condensates.” PRX Quantum, 2021. https://doi.org/10.1103/prxquantum.2.030320.
ieee: 'C. Lüders et al., “Quantifying Quantum Coherence in Polariton Condensates,”
PRX Quantum, 2021, doi: 10.1103/prxquantum.2.030320.'
mla: Lüders, Carolin, et al. “Quantifying Quantum Coherence in Polariton Condensates.”
PRX Quantum, 2021, doi:10.1103/prxquantum.2.030320.
short: C. Lüders, M. Pukrop, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S.
Schumacher, M. Aßmann, PRX Quantum (2021).
date_created: 2021-10-15T16:00:39Z
date_updated: 2023-04-20T15:11:36Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '706'
- _id: '230'
- _id: '429'
- _id: '623'
- _id: '35'
doi: 10.1103/prxquantum.2.030320
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
publication: PRX Quantum
publication_identifier:
issn:
- 2691-3399
publication_status: published
status: public
title: Quantifying Quantum Coherence in Polariton Condensates
type: journal_article
user_id: '16199'
year: '2021'
...
---
_id: '29748'
author:
- first_name: Diana
full_name: Slawig, Diana
last_name: Slawig
- first_name: Markus
full_name: Gruschwitz, Markus
last_name: Gruschwitz
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Eva
full_name: Rauls, Eva
last_name: Rauls
- first_name: Christoph
full_name: Tegenkamp, Christoph
last_name: Tegenkamp
citation:
ama: Slawig D, Gruschwitz M, Gerstmann U, Rauls E, Tegenkamp C. Adsorption and Reaction
of PbPc on Hydrogenated Epitaxial Graphene. The Journal of Physical Chemistry
C. 2021;125(36):20087-20093. doi:10.1021/acs.jpcc.1c06320
apa: Slawig, D., Gruschwitz, M., Gerstmann, U., Rauls, E., & Tegenkamp, C. (2021).
Adsorption and Reaction of PbPc on Hydrogenated Epitaxial Graphene. The Journal
of Physical Chemistry C, 125(36), 20087–20093. https://doi.org/10.1021/acs.jpcc.1c06320
bibtex: '@article{Slawig_Gruschwitz_Gerstmann_Rauls_Tegenkamp_2021, title={Adsorption
and Reaction of PbPc on Hydrogenated Epitaxial Graphene}, volume={125}, DOI={10.1021/acs.jpcc.1c06320},
number={36}, journal={The Journal of Physical Chemistry C}, publisher={American
Chemical Society (ACS)}, author={Slawig, Diana and Gruschwitz, Markus and Gerstmann,
Uwe and Rauls, Eva and Tegenkamp, Christoph}, year={2021}, pages={20087–20093}
}'
chicago: 'Slawig, Diana, Markus Gruschwitz, Uwe Gerstmann, Eva Rauls, and Christoph
Tegenkamp. “Adsorption and Reaction of PbPc on Hydrogenated Epitaxial Graphene.”
The Journal of Physical Chemistry C 125, no. 36 (2021): 20087–93. https://doi.org/10.1021/acs.jpcc.1c06320.'
ieee: 'D. Slawig, M. Gruschwitz, U. Gerstmann, E. Rauls, and C. Tegenkamp, “Adsorption
and Reaction of PbPc on Hydrogenated Epitaxial Graphene,” The Journal of Physical
Chemistry C, vol. 125, no. 36, pp. 20087–20093, 2021, doi: 10.1021/acs.jpcc.1c06320.'
mla: Slawig, Diana, et al. “Adsorption and Reaction of PbPc on Hydrogenated Epitaxial
Graphene.” The Journal of Physical Chemistry C, vol. 125, no. 36, American
Chemical Society (ACS), 2021, pp. 20087–93, doi:10.1021/acs.jpcc.1c06320.
short: D. Slawig, M. Gruschwitz, U. Gerstmann, E. Rauls, C. Tegenkamp, The Journal
of Physical Chemistry C 125 (2021) 20087–20093.
date_created: 2022-02-03T15:37:32Z
date_updated: 2023-04-20T16:04:22Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '35'
- _id: '790'
doi: 10.1021/acs.jpcc.1c06320
intvolume: ' 125'
issue: '36'
keyword:
- Surfaces
- Coatings and Films
- Physical and Theoretical Chemistry
- General Energy
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
page: 20087-20093
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '69'
name: 'TRR 142 - B4: TRR 142 - Subproject B4'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: The Journal of Physical Chemistry C
publication_identifier:
issn:
- 1932-7447
- 1932-7455
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Adsorption and Reaction of PbPc on Hydrogenated Epitaxial Graphene
type: journal_article
user_id: '16199'
volume: 125
year: '2021'
...
---
_id: '37331'
abstract:
- lang: eng
text: High harmonic generation (HHG) from solids shows great application
prospects in compact short-wavelength light sources and as a tool for imaging
the dynamics in crystals with subnanometer spatial and attosecond temporal resolution.
However, the underlying collision dynamics behind solid HHG is still intensively
debated and no direct mapping relationship between the collision dynamics with
band structure has been built. Here, we show that the electron and its associated
hole can be elastically scattered by neighboring atoms when their wavelength approaches
the atomic size. We reveal that the elastic scattering of electron/hole from neighboring
atoms can dramatically influence the electron recombination with its left-behind
hole, which turns out to be the fundamental reason for the anisotropic interband
HHG observed recently in bulk crystals. Our findings link the electron/hole backward
scattering with Van Hove singularities and forward scattering with critical lines
in the band structure and thus build a clear mapping between the band structure
and the harmonic spectrum. Our work provides a unifying picture for several seemingly
unrelated experimental observations and theoretical predictions, including the
anisotropic harmonic emission in MgO, the atomic-like recollision mechanism of
solid HHG, and the delocalization of HHG in ZnO. This strongly improved understanding
will pave the way for controlling the solid-state HHG and visualizing the structure-dependent
electron dynamics in solids.
author:
- first_name: Ruixin
full_name: Zuo, Ruixin
last_name: Zuo
- first_name: Alexander
full_name: Trautmann, Alexander
id: '38163'
last_name: Trautmann
- first_name: Guifang
full_name: Wang, Guifang
last_name: Wang
- first_name: Wolf-Rüdiger
full_name: Hannes, Wolf-Rüdiger
last_name: Hannes
- first_name: Shidong
full_name: Yang, Shidong
last_name: Yang
- first_name: Xiaohong
full_name: Song, Xiaohong
last_name: Song
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Marcelo
full_name: Ciappina, Marcelo
last_name: Ciappina
- first_name: Huynh Thanh
full_name: Duc, Huynh Thanh
last_name: Duc
- first_name: Weifeng
full_name: Yang, Weifeng
last_name: Yang
citation:
ama: Zuo R, Trautmann A, Wang G, et al. Neighboring Atom Collisions in Solid-State
High Harmonic Generation. Ultrafast Science. 2021;2021. doi:10.34133/2021/9861923
apa: Zuo, R., Trautmann, A., Wang, G., Hannes, W.-R., Yang, S., Song, X., Meier,
T., Ciappina, M., Duc, H. T., & Yang, W. (2021). Neighboring Atom Collisions
in Solid-State High Harmonic Generation. Ultrafast Science, 2021.
https://doi.org/10.34133/2021/9861923
bibtex: '@article{Zuo_Trautmann_Wang_Hannes_Yang_Song_Meier_Ciappina_Duc_Yang_2021,
title={Neighboring Atom Collisions in Solid-State High Harmonic Generation}, volume={2021},
DOI={10.34133/2021/9861923},
journal={Ultrafast Science}, publisher={American Association for the Advancement
of Science (AAAS)}, author={Zuo, Ruixin and Trautmann, Alexander and Wang, Guifang
and Hannes, Wolf-Rüdiger and Yang, Shidong and Song, Xiaohong and Meier, Torsten
and Ciappina, Marcelo and Duc, Huynh Thanh and Yang, Weifeng}, year={2021} }'
chicago: Zuo, Ruixin, Alexander Trautmann, Guifang Wang, Wolf-Rüdiger Hannes, Shidong
Yang, Xiaohong Song, Torsten Meier, Marcelo Ciappina, Huynh Thanh Duc, and Weifeng
Yang. “Neighboring Atom Collisions in Solid-State High Harmonic Generation.” Ultrafast
Science 2021 (2021). https://doi.org/10.34133/2021/9861923.
ieee: 'R. Zuo et al., “Neighboring Atom Collisions in Solid-State High Harmonic
Generation,” Ultrafast Science, vol. 2021, 2021, doi: 10.34133/2021/9861923.'
mla: Zuo, Ruixin, et al. “Neighboring Atom Collisions in Solid-State High Harmonic
Generation.” Ultrafast Science, vol. 2021, American Association for the
Advancement of Science (AAAS), 2021, doi:10.34133/2021/9861923.
short: R. Zuo, A. Trautmann, G. Wang, W.-R. Hannes, S. Yang, X. Song, T. Meier,
M. Ciappina, H.T. Duc, W. Yang, Ultrafast Science 2021 (2021).
date_created: 2023-01-18T11:25:42Z
date_updated: 2023-04-21T11:11:08Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '35'
doi: 10.34133/2021/9861923
intvolume: ' 2021'
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '64'
name: 'TRR 142 - A7: TRR 142 - Subproject A7'
publication: Ultrafast Science
publication_identifier:
issn:
- 2765-8791
publication_status: published
publisher: American Association for the Advancement of Science (AAAS)
status: public
title: Neighboring Atom Collisions in Solid-State High Harmonic Generation
type: journal_article
user_id: '16199'
volume: 2021
year: '2021'
...
---
_id: '37338'
abstract:
- lang: eng
text: AbstractMethylammonium lead iodide perovskite
(MAPbI3) is renowned for an impressive power conversion efficiency
rise and cost-effective fabrication for photovoltaics. In this work, we demonstrate
that polycrystalline MAPbI3s undergo drastic changes in optical
properties at moderate field strengths with an ultrafast response time, via transient
Wannier Stark localization. The distinct band structure of this material - the
large lattice periodicity, the narrow electronic energy bandwidths, and the coincidence
of these two along the same high-symmetry direction – enables relatively weak
fields to bring this material into the Wannier Stark regime. Its polycrystalline
nature is not detrimental to the optical switching performance of the material,
since the least dispersive direction of the band structure dominates the contribution
to the optical response, which favors low-cost fabrication. Together with the
outstanding photophysical properties of MAPbI3, this finding
highlights the great potential of this material in ultrafast light modulation
and novel photonic applications.
article_number: '5719'
author:
- first_name: Daniel
full_name: Berghoff, Daniel
id: '38175'
last_name: Berghoff
- first_name: Johannes
full_name: Bühler, Johannes
last_name: Bühler
- first_name: Mischa
full_name: Bonn, Mischa
last_name: Bonn
- first_name: Alfred
full_name: Leitenstorfer, Alfred
last_name: Leitenstorfer
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Heejae
full_name: Kim, Heejae
last_name: Kim
citation:
ama: Berghoff D, Bühler J, Bonn M, Leitenstorfer A, Meier T, Kim H. Low-field onset
of Wannier-Stark localization in a polycrystalline hybrid organic inorganic perovskite.
Nature Communications. 2021;12(1). doi:10.1038/s41467-021-26021-4
apa: Berghoff, D., Bühler, J., Bonn, M., Leitenstorfer, A., Meier, T., & Kim,
H. (2021). Low-field onset of Wannier-Stark localization in a polycrystalline
hybrid organic inorganic perovskite. Nature Communications, 12(1),
Article 5719. https://doi.org/10.1038/s41467-021-26021-4
bibtex: '@article{Berghoff_Bühler_Bonn_Leitenstorfer_Meier_Kim_2021, title={Low-field
onset of Wannier-Stark localization in a polycrystalline hybrid organic inorganic
perovskite}, volume={12}, DOI={10.1038/s41467-021-26021-4},
number={15719}, journal={Nature Communications}, publisher={Springer Science and
Business Media LLC}, author={Berghoff, Daniel and Bühler, Johannes and Bonn, Mischa
and Leitenstorfer, Alfred and Meier, Torsten and Kim, Heejae}, year={2021} }'
chicago: Berghoff, Daniel, Johannes Bühler, Mischa Bonn, Alfred Leitenstorfer, Torsten
Meier, and Heejae Kim. “Low-Field Onset of Wannier-Stark Localization in a Polycrystalline
Hybrid Organic Inorganic Perovskite.” Nature Communications 12, no. 1 (2021).
https://doi.org/10.1038/s41467-021-26021-4.
ieee: 'D. Berghoff, J. Bühler, M. Bonn, A. Leitenstorfer, T. Meier, and H. Kim,
“Low-field onset of Wannier-Stark localization in a polycrystalline hybrid organic
inorganic perovskite,” Nature Communications, vol. 12, no. 1, Art. no.
5719, 2021, doi: 10.1038/s41467-021-26021-4.'
mla: Berghoff, Daniel, et al. “Low-Field Onset of Wannier-Stark Localization in
a Polycrystalline Hybrid Organic Inorganic Perovskite.” Nature Communications,
vol. 12, no. 1, 5719, Springer Science and Business Media LLC, 2021, doi:10.1038/s41467-021-26021-4.
short: D. Berghoff, J. Bühler, M. Bonn, A. Leitenstorfer, T. Meier, H. Kim, Nature
Communications 12 (2021).
date_created: 2023-01-18T11:47:55Z
date_updated: 2023-04-21T11:14:19Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '35'
doi: 10.1038/s41467-021-26021-4
intvolume: ' 12'
issue: '1'
keyword:
- General Physics and Astronomy
- General Biochemistry
- Genetics and Molecular Biology
- General Chemistry
- Multidisciplinary
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '59'
name: 'TRR 142 - A2: TRR 142 - Subproject A2'
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Low-field onset of Wannier-Stark localization in a polycrystalline hybrid organic
inorganic perovskite
type: journal_article
user_id: '16199'
volume: 12
year: '2021'
...
---
_id: '21946'
abstract:
- lang: eng
text: Lithium niobate (LiNbO3), a material frequently used in optical applications,
hosts different kinds of polarons that significantly affect many of its physical
properties. In this study, a variety of electron polarons, namely free, bound,
and bipolarons, are analyzed using first-principles calculations. We perform a
full structural optimization based on density-functional theory for selected intrinsic
defects with special attention to the role of symmetry-breaking distortions that
lower the total energy. The cations hosting the various polarons relax to a different
degree, with a larger relaxation corresponding to a larger gap between the defect
level and the conduction-band edge. The projected density of states reveals that
the polaron states are formerly empty Nb 4d states lowered into the band gap.
Optical absorption spectra are derived within the independent-particle approximation,
corrected by the GW approximation that yields a wider band gap and by including
excitonic effects within the Bethe-Salpeter equation. Comparing the calculated
spectra with the density of states, we find that the defect peak observed in the
optical absorption stems from transitions between the defect level and a continuum
of empty Nb 4d states. Signatures of polarons are further analyzed in the reflectivity
and other experimentally measurable optical coefficients.
article_type: original
author:
- first_name: Falko
full_name: Schmidt, Falko
id: '35251'
last_name: Schmidt
orcid: 0000-0002-5071-5528
- first_name: Agnieszka L.
full_name: Kozub, Agnieszka L.
id: '77566'
last_name: Kozub
orcid: https://orcid.org/0000-0001-6584-0201
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
citation:
ama: 'Schmidt F, Kozub AL, Gerstmann U, Schmidt WG, Schindlmayr A. Electron polarons
in lithium niobate: Charge localization, lattice deformation, and optical response.
Crystals. 2021;11:542. doi:10.3390/cryst11050542'
apa: 'Schmidt, F., Kozub, A. L., Gerstmann, U., Schmidt, W. G., & Schindlmayr,
A. (2021). Electron polarons in lithium niobate: Charge localization, lattice
deformation, and optical response. Crystals, 11, 542. https://doi.org/10.3390/cryst11050542'
bibtex: '@article{Schmidt_Kozub_Gerstmann_Schmidt_Schindlmayr_2021, title={Electron
polarons in lithium niobate: Charge localization, lattice deformation, and optical
response}, volume={11}, DOI={10.3390/cryst11050542},
journal={Crystals}, publisher={MDPI}, author={Schmidt, Falko and Kozub, Agnieszka
L. and Gerstmann, Uwe and Schmidt, Wolf Gero and Schindlmayr, Arno}, year={2021},
pages={542} }'
chicago: 'Schmidt, Falko, Agnieszka L. Kozub, Uwe Gerstmann, Wolf Gero Schmidt,
and Arno Schindlmayr. “Electron Polarons in Lithium Niobate: Charge Localization,
Lattice Deformation, and Optical Response.” Crystals 11 (2021): 542. https://doi.org/10.3390/cryst11050542.'
ieee: 'F. Schmidt, A. L. Kozub, U. Gerstmann, W. G. Schmidt, and A. Schindlmayr,
“Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response,” Crystals, vol. 11, p. 542, 2021, doi: 10.3390/cryst11050542.'
mla: 'Schmidt, Falko, et al. “Electron Polarons in Lithium Niobate: Charge Localization,
Lattice Deformation, and Optical Response.” Crystals, vol. 11, MDPI, 2021,
p. 542, doi:10.3390/cryst11050542.'
short: F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, Crystals
11 (2021) 542.
date_created: 2021-05-03T09:36:13Z
date_updated: 2023-04-21T11:20:15Z
ddc:
- '530'
department:
- _id: '296'
- _id: '230'
- _id: '429'
- _id: '295'
- _id: '15'
- _id: '170'
- _id: '35'
- _id: '790'
doi: 10.3390/cryst11050542
external_id:
isi:
- '000653822700001'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2021-05-13T16:47:11Z
date_updated: 2021-05-13T16:51:41Z
description: Creative Commons Attribution 4.0 International Public License (CC BY
4.0)
file_id: '22163'
file_name: crystals-11-00542.pdf
file_size: 3042827
relation: main_file
title: 'Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response'
file_date_updated: 2021-05-13T16:51:41Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 11'
isi: '1'
language:
- iso: eng
oa: '1'
page: '542'
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '69'
name: TRR 142 - Subproject B4
- _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: Crystals
publication_identifier:
eissn:
- 2073-4352
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: 'Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response'
type: journal_article
user_id: '171'
volume: 11
year: '2021'
...
---
_id: '23474'
article_number: 116840X
author:
- first_name: Matthias
full_name: Reichelt, Matthias
id: '138'
last_name: Reichelt
- first_name: Hendrik
full_name: Rose, Hendrik
id: '55958'
last_name: Rose
orcid: 0000-0002-3079-5428
- first_name: Alexander N.
full_name: Kosarev, Alexander N.
last_name: Kosarev
- first_name: Sergey V.
full_name: Poltavtsev, Sergey V.
last_name: Poltavtsev
- first_name: Manfred
full_name: Bayer, Manfred
last_name: Bayer
- first_name: Ilya A.
full_name: Akimov, Ilya A.
last_name: Akimov
- first_name: Christian
full_name: Schneider, Christian
last_name: Schneider
- first_name: Martin
full_name: Kamp, Martin
last_name: Kamp
- first_name: Sven
full_name: Höfling, Sven
last_name: Höfling
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: 'Reichelt M, Rose H, Kosarev AN, et al. Controlling the emission time of photon
echoes by optical freezing of exciton dephasing and rephasing in quantum-dot ensembles.
In: Betz M, Elezzabi AY, eds. Ultrafast Phenomena and Nanophotonics XXV.
Vol 11684. SPIE Proceedings. ; 2021. doi:10.1117/12.2576887'
apa: Reichelt, M., Rose, H., Kosarev, A. N., Poltavtsev, S. V., Bayer, M., Akimov,
I. A., Schneider, C., Kamp, M., Höfling, S., & Meier, T. (2021). Controlling
the emission time of photon echoes by optical freezing of exciton dephasing and
rephasing in quantum-dot ensembles. In M. Betz & A. Y. Elezzabi (Eds.), Ultrafast
Phenomena and Nanophotonics XXV (No. 116840X; Vol. 11684). https://doi.org/10.1117/12.2576887
bibtex: '@inproceedings{Reichelt_Rose_Kosarev_Poltavtsev_Bayer_Akimov_Schneider_Kamp_Höfling_Meier_2021,
series={SPIE Proceedings}, title={Controlling the emission time of photon echoes
by optical freezing of exciton dephasing and rephasing in quantum-dot ensembles},
volume={11684}, DOI={10.1117/12.2576887},
number={116840X}, booktitle={Ultrafast Phenomena and Nanophotonics XXV}, author={Reichelt,
Matthias and Rose, Hendrik and Kosarev, Alexander N. and Poltavtsev, Sergey V.
and Bayer, Manfred and Akimov, Ilya A. and Schneider, Christian and Kamp, Martin
and Höfling, Sven and Meier, Torsten}, editor={Betz, Markus and Elezzabi, Abdulhakem
Y.}, year={2021}, collection={SPIE Proceedings} }'
chicago: Reichelt, Matthias, Hendrik Rose, Alexander N. Kosarev, Sergey V. Poltavtsev,
Manfred Bayer, Ilya A. Akimov, Christian Schneider, Martin Kamp, Sven Höfling,
and Torsten Meier. “Controlling the Emission Time of Photon Echoes by Optical
Freezing of Exciton Dephasing and Rephasing in Quantum-Dot Ensembles.” In Ultrafast
Phenomena and Nanophotonics XXV, edited by Markus Betz and Abdulhakem Y. Elezzabi,
Vol. 11684. SPIE Proceedings, 2021. https://doi.org/10.1117/12.2576887.
ieee: 'M. Reichelt et al., “Controlling the emission time of photon echoes
by optical freezing of exciton dephasing and rephasing in quantum-dot ensembles,”
in Ultrafast Phenomena and Nanophotonics XXV, 2021, vol. 11684, doi: 10.1117/12.2576887.'
mla: Reichelt, Matthias, et al. “Controlling the Emission Time of Photon Echoes
by Optical Freezing of Exciton Dephasing and Rephasing in Quantum-Dot Ensembles.”
Ultrafast Phenomena and Nanophotonics XXV, edited by Markus Betz and Abdulhakem
Y. Elezzabi, vol. 11684, 116840X, 2021, doi:10.1117/12.2576887.
short: 'M. Reichelt, H. Rose, A.N. Kosarev, S.V. Poltavtsev, M. Bayer, I.A. Akimov,
C. Schneider, M. Kamp, S. Höfling, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.),
Ultrafast Phenomena and Nanophotonics XXV, 2021.'
date_created: 2021-08-24T08:46:40Z
date_updated: 2023-04-21T11:20:10Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '623'
- _id: '35'
doi: 10.1117/12.2576887
editor:
- first_name: Markus
full_name: Betz, Markus
last_name: Betz
- first_name: Abdulhakem Y.
full_name: Elezzabi, Abdulhakem Y.
last_name: Elezzabi
intvolume: ' 11684'
language:
- iso: eng
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '59'
name: TRR 142 - Subproject A2
- _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: Ultrafast Phenomena and Nanophotonics XXV
publication_status: published
series_title: SPIE Proceedings
status: public
title: Controlling the emission time of photon echoes by optical freezing of exciton
dephasing and rephasing in quantum-dot ensembles
type: conference
user_id: '16199'
volume: 11684
year: '2021'
...
---
_id: '22881'
author:
- first_name: T. T. Nhung
full_name: Nguyen, T. T. Nhung
last_name: Nguyen
- first_name: T.
full_name: Sollfrank, T.
last_name: Sollfrank
- first_name: C.
full_name: Tegenkamp, C.
last_name: Tegenkamp
- first_name: E.
full_name: Rauls, E.
last_name: Rauls
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
citation:
ama: Nguyen TTN, Sollfrank T, Tegenkamp C, Rauls E, Gerstmann U. Impact of screening
and relaxation on weakly coupled two-dimensional heterostructures. Physical
Review B. 2021;103:L201408. doi:10.1103/physrevb.103.l201408
apa: Nguyen, T. T. N., Sollfrank, T., Tegenkamp, C., Rauls, E., & Gerstmann,
U. (2021). Impact of screening and relaxation on weakly coupled two-dimensional
heterostructures. Physical Review B, 103, L201408. https://doi.org/10.1103/physrevb.103.l201408
bibtex: '@article{Nguyen_Sollfrank_Tegenkamp_Rauls_Gerstmann_2021, title={Impact
of screening and relaxation on weakly coupled two-dimensional heterostructures},
volume={103}, DOI={10.1103/physrevb.103.l201408},
journal={Physical Review B}, author={Nguyen, T. T. Nhung and Sollfrank, T. and
Tegenkamp, C. and Rauls, E. and Gerstmann, Uwe}, year={2021}, pages={L201408}
}'
chicago: 'Nguyen, T. T. Nhung, T. Sollfrank, C. Tegenkamp, E. Rauls, and Uwe Gerstmann.
“Impact of Screening and Relaxation on Weakly Coupled Two-Dimensional Heterostructures.”
Physical Review B 103 (2021): L201408. https://doi.org/10.1103/physrevb.103.l201408.'
ieee: 'T. T. N. Nguyen, T. Sollfrank, C. Tegenkamp, E. Rauls, and U. Gerstmann,
“Impact of screening and relaxation on weakly coupled two-dimensional heterostructures,”
Physical Review B, vol. 103, p. L201408, 2021, doi: 10.1103/physrevb.103.l201408.'
mla: Nguyen, T. T. Nhung, et al. “Impact of Screening and Relaxation on Weakly Coupled
Two-Dimensional Heterostructures.” Physical Review B, vol. 103, 2021, p.
L201408, doi:10.1103/physrevb.103.l201408.
short: T.T.N. Nguyen, T. Sollfrank, C. Tegenkamp, E. Rauls, U. Gerstmann, Physical
Review B 103 (2021) L201408.
date_created: 2021-07-29T07:09:50Z
date_updated: 2023-04-21T11:24:45Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '35'
- _id: '790'
doi: 10.1103/physrevb.103.l201408
intvolume: ' 103'
language:
- iso: eng
page: L201408
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '69'
name: TRR 142 - Subproject B4
- _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: Impact of screening and relaxation on weakly coupled two-dimensional heterostructures
type: journal_article
user_id: '171'
volume: 103
year: '2021'
...
---
_id: '22310'
author:
- first_name: Sergej
full_name: Neufeld, Sergej
id: '23261'
last_name: Neufeld
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: https://orcid.org/0000-0002-2134-3075
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Neufeld S, Bocchini A, Schmidt WG. Potassium titanyl phosphate Z- and Y-cut
surfaces from density-functional theory. Physical Review Materials. Published
online 2021. doi:10.1103/physrevmaterials.5.064407
apa: Neufeld, S., Bocchini, A., & Schmidt, W. G. (2021). Potassium titanyl phosphate
Z- and Y-cut surfaces from density-functional theory. Physical Review Materials.
https://doi.org/10.1103/physrevmaterials.5.064407
bibtex: '@article{Neufeld_Bocchini_Schmidt_2021, title={Potassium titanyl phosphate
Z- and Y-cut surfaces from density-functional theory}, DOI={10.1103/physrevmaterials.5.064407},
journal={Physical Review Materials}, author={Neufeld, Sergej and Bocchini, Adriana
and Schmidt, Wolf Gero}, year={2021} }'
chicago: Neufeld, Sergej, Adriana Bocchini, and Wolf Gero Schmidt. “Potassium Titanyl
Phosphate Z- and Y-Cut Surfaces from Density-Functional Theory.” Physical Review
Materials, 2021. https://doi.org/10.1103/physrevmaterials.5.064407.
ieee: 'S. Neufeld, A. Bocchini, and W. G. Schmidt, “Potassium titanyl phosphate
Z- and Y-cut surfaces from density-functional theory,” Physical Review Materials,
2021, doi: 10.1103/physrevmaterials.5.064407.'
mla: Neufeld, Sergej, et al. “Potassium Titanyl Phosphate Z- and Y-Cut Surfaces
from Density-Functional Theory.” Physical Review Materials, 2021, doi:10.1103/physrevmaterials.5.064407.
short: S. Neufeld, A. Bocchini, W.G. Schmidt, Physical Review Materials (2021).
date_created: 2021-06-14T17:34:35Z
date_updated: 2023-04-20T14:08:07Z
department:
- _id: '15'
- _id: '295'
- _id: '170'
- _id: '429'
- _id: '230'
- _id: '35'
doi: 10.1103/physrevmaterials.5.064407
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '69'
name: 'TRR 142 - B4: TRR 142 - Subproject B4'
publication: Physical Review Materials
publication_identifier:
issn:
- 2475-9953
publication_status: published
status: public
title: Potassium titanyl phosphate Z- and Y-cut surfaces from density-functional theory
type: journal_article
user_id: '16199'
year: '2021'
...
---
_id: '22960'
abstract:
- lang: eng
text: We perform a theoretical analysis of the structural and electronic properties
of sodium potassium niobate K1-xNaxNbO3 in the orthorhombic room-temperature phase,
based on density-functional theory in combination with the supercell approach.
Our results for x=0 and x=0.5 are in very good agreement with experimental measurements
and establish that the lattice parameters decrease linearly with increasing Na
contents, disproving earlier theoretical studies based on the virtual-crystal
approximation that claimed a highly nonlinear behavior with a significant structural
distortion and volume reduction in K0.5Na0.5NbO3 compared to both end members
of the solid solution. Furthermore, we find that the electronic band gap varies
very little between x=0 and x=0.5, reflecting the small changes in the lattice
parameters.
article_number: '169'
article_type: original
author:
- first_name: Nithin
full_name: Bidaraguppe Ramesh, Nithin
id: '70064'
last_name: Bidaraguppe Ramesh
- first_name: Falko
full_name: Schmidt, Falko
id: '35251'
last_name: Schmidt
orcid: 0000-0002-5071-5528
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
citation:
ama: Bidaraguppe Ramesh N, Schmidt F, Schindlmayr A. Lattice parameters and electronic
band gap of orthorhombic potassium sodium niobate K0.5Na0.5NbO3 from density-functional
theory. The European Physical Journal B. 2021;94(8). doi:10.1140/epjb/s10051-021-00179-8
apa: Bidaraguppe Ramesh, N., Schmidt, F., & Schindlmayr, A. (2021). Lattice
parameters and electronic band gap of orthorhombic potassium sodium niobate K0.5Na0.5NbO3
from density-functional theory. The European Physical Journal B, 94(8),
Article 169. https://doi.org/10.1140/epjb/s10051-021-00179-8
bibtex: '@article{Bidaraguppe Ramesh_Schmidt_Schindlmayr_2021, title={Lattice parameters
and electronic band gap of orthorhombic potassium sodium niobate K0.5Na0.5NbO3
from density-functional theory}, volume={94}, DOI={10.1140/epjb/s10051-021-00179-8},
number={8169}, journal={The European Physical Journal B}, publisher={EDP Sciences,
Società Italiana di Fisica and Springer}, author={Bidaraguppe Ramesh, Nithin and
Schmidt, Falko and Schindlmayr, Arno}, year={2021} }'
chicago: Bidaraguppe Ramesh, Nithin, Falko Schmidt, and Arno Schindlmayr. “Lattice
Parameters and Electronic Band Gap of Orthorhombic Potassium Sodium Niobate K0.5Na0.5NbO3
from Density-Functional Theory.” The European Physical Journal B 94, no.
8 (2021). https://doi.org/10.1140/epjb/s10051-021-00179-8.
ieee: 'N. Bidaraguppe Ramesh, F. Schmidt, and A. Schindlmayr, “Lattice parameters
and electronic band gap of orthorhombic potassium sodium niobate K0.5Na0.5NbO3
from density-functional theory,” The European Physical Journal B, vol.
94, no. 8, Art. no. 169, 2021, doi: 10.1140/epjb/s10051-021-00179-8.'
mla: Bidaraguppe Ramesh, Nithin, et al. “Lattice Parameters and Electronic Band
Gap of Orthorhombic Potassium Sodium Niobate K0.5Na0.5NbO3 from Density-Functional
Theory.” The European Physical Journal B, vol. 94, no. 8, 169, EDP Sciences,
Società Italiana di Fisica and Springer, 2021, doi:10.1140/epjb/s10051-021-00179-8.
short: N. Bidaraguppe Ramesh, F. Schmidt, A. Schindlmayr, The European Physical
Journal B 94 (2021).
date_created: 2021-08-08T21:21:42Z
date_updated: 2023-04-20T14:56:25Z
ddc:
- '530'
department:
- _id: '296'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '170'
- _id: '35'
doi: 10.1140/epjb/s10051-021-00179-8
external_id:
isi:
- '000687163200002'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2021-09-02T08:05:06Z
date_updated: 2021-09-02T08:05:06Z
description: Creative Commons Attribution 4.0 International Public License (CC BY
4.0)
file_id: '23679'
file_name: BidaraguppeRamesh2021_Article_LatticeParametersAndElectronic.pdf
file_size: 850389
relation: main_file
title: Lattice parameters and electronic bandgap of orthorhombic potassium sodium
niobate K0.5Na0.5NbO3 from density-functional theory
file_date_updated: 2021-09-02T08:05:06Z
has_accepted_license: '1'
intvolume: ' 94'
isi: '1'
issue: '8'
language:
- iso: eng
oa: '1'
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '69'
name: TRR 142 - Subproject B4
publication: The European Physical Journal B
publication_identifier:
eissn:
- 1434-6036
issn:
- 1434-6028
publication_status: published
publisher: EDP Sciences, Società Italiana di Fisica and Springer
quality_controlled: '1'
status: public
title: Lattice parameters and electronic band gap of orthorhombic potassium sodium
niobate K0.5Na0.5NbO3 from density-functional theory
type: journal_article
user_id: '16199'
volume: 94
year: '2021'
...
---
_id: '37334'
abstract:
- lang: eng
text: Uniaxial anisotropy in nonlinear birefringent crystals limits the
efficiency of nonlinear optical interactions and breaks the spatial symmetry of
light generated in the parametric down-conversion (PDC) process. Therefore, this
effect is usually undesirable and must be compensated for. However, high gain
may be used to overcome the destructive role of anisotropy in order to generate
bright two-mode correlated twin-beams. In this work, we provide a rigorous theoretical
description of the spatial properties of bright squeezed light in the presence
of strong anisotropy. We investigate a single crystal and a system of two crystals
with an air gap (corresponding to a nonlinear SU(1,1) interferometer) and demonstrate
the generation of bright correlated twin-beams in such configurations at high
gain due to anisotropy. We explore the mode structure of the generated light and
show how anisotropy, together with crystal spacing, can be used for radiation
shaping.
author:
- first_name: M.
full_name: Riabinin, M.
last_name: Riabinin
- first_name: Polina
full_name: Sharapova, Polina
id: '60286'
last_name: Sharapova
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: Riabinin M, Sharapova P, Meier T. Bright correlated twin-beam generation and
radiation shaping in high-gain parametric down-conversion with anisotropy. Optics
Express. 2021;29(14):21876-21890. doi:10.1364/oe.424977
apa: Riabinin, M., Sharapova, P., & Meier, T. (2021). Bright correlated twin-beam
generation and radiation shaping in high-gain parametric down-conversion with
anisotropy. Optics Express, 29(14), 21876–21890. https://doi.org/10.1364/oe.424977
bibtex: '@article{Riabinin_Sharapova_Meier_2021, title={Bright correlated twin-beam
generation and radiation shaping in high-gain parametric down-conversion with
anisotropy}, volume={29}, DOI={10.1364/oe.424977},
number={14}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Riabinin,
M. and Sharapova, Polina and Meier, Torsten}, year={2021}, pages={21876–21890}
}'
chicago: 'Riabinin, M., Polina Sharapova, and Torsten Meier. “Bright Correlated
Twin-Beam Generation and Radiation Shaping in High-Gain Parametric down-Conversion
with Anisotropy.” Optics Express 29, no. 14 (2021): 21876–90. https://doi.org/10.1364/oe.424977.'
ieee: 'M. Riabinin, P. Sharapova, and T. Meier, “Bright correlated twin-beam generation
and radiation shaping in high-gain parametric down-conversion with anisotropy,”
Optics Express, vol. 29, no. 14, pp. 21876–21890, 2021, doi: 10.1364/oe.424977.'
mla: Riabinin, M., et al. “Bright Correlated Twin-Beam Generation and Radiation
Shaping in High-Gain Parametric down-Conversion with Anisotropy.” Optics Express,
vol. 29, no. 14, Optica Publishing Group, 2021, pp. 21876–90, doi:10.1364/oe.424977.
short: M. Riabinin, P. Sharapova, T. Meier, Optics Express 29 (2021) 21876–21890.
date_created: 2023-01-18T11:31:53Z
date_updated: 2023-04-20T14:58:35Z
department:
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '35'
doi: 10.1364/oe.424977
intvolume: ' 29'
issue: '14'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
page: 21876-21890
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '76'
name: 'TRR 142 - C6: TRR 142 - Subproject C6'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Bright correlated twin-beam generation and radiation shaping in high-gain parametric
down-conversion with anisotropy
type: journal_article
user_id: '16199'
volume: 29
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: '23418'
abstract:
- lang: eng
text: Density-functional theory within a Berry-phase formulation of the dynamical
polarization is used to determine the second-order susceptibility χ(2) of lithium
niobate (LiNbO3). Defect trapped polarons and bipolarons are found to strongly
enhance the nonlinear susceptibility of the material, in particular if localized
at NbV–VLi defect pairs. This is essentially a consequence of the polaronic excitation
resulting in relaxation-induced gap states. The occupation of these levels leads
to strongly enhanced χ(2) coefficients and allows for the spatial and transient
modification of the second-harmonic generation of macroscopic samples.
article_type: original
author:
- first_name: Agnieszka L.
full_name: Kozub, Agnieszka L.
id: '77566'
last_name: Kozub
orcid: https://orcid.org/0000-0001-6584-0201
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Kozub AL, Schindlmayr A, Gerstmann U, Schmidt WG. Polaronic enhancement of
second-harmonic generation in lithium niobate. Physical Review B. 2021;104:174110.
doi:10.1103/PhysRevB.104.174110
apa: Kozub, A. L., Schindlmayr, A., Gerstmann, U., & Schmidt, W. G. (2021).
Polaronic enhancement of second-harmonic generation in lithium niobate. Physical
Review B, 104, 174110. https://doi.org/10.1103/PhysRevB.104.174110
bibtex: '@article{Kozub_Schindlmayr_Gerstmann_Schmidt_2021, title={Polaronic enhancement
of second-harmonic generation in lithium niobate}, volume={104}, DOI={10.1103/PhysRevB.104.174110},
journal={Physical Review B}, publisher={American Physical Society}, author={Kozub,
Agnieszka L. and Schindlmayr, Arno and Gerstmann, Uwe and Schmidt, Wolf Gero},
year={2021}, pages={174110} }'
chicago: 'Kozub, Agnieszka L., Arno Schindlmayr, Uwe Gerstmann, and Wolf Gero Schmidt.
“Polaronic Enhancement of Second-Harmonic Generation in Lithium Niobate.” Physical
Review B 104 (2021): 174110. https://doi.org/10.1103/PhysRevB.104.174110.'
ieee: 'A. L. Kozub, A. Schindlmayr, U. Gerstmann, and W. G. Schmidt, “Polaronic
enhancement of second-harmonic generation in lithium niobate,” Physical Review
B, vol. 104, p. 174110, 2021, doi: 10.1103/PhysRevB.104.174110.'
mla: Kozub, Agnieszka L., et al. “Polaronic Enhancement of Second-Harmonic Generation
in Lithium Niobate.” Physical Review B, vol. 104, American Physical Society,
2021, p. 174110, doi:10.1103/PhysRevB.104.174110.
short: A.L. Kozub, A. Schindlmayr, U. Gerstmann, W.G. Schmidt, Physical Review B
104 (2021) 174110.
date_created: 2021-08-16T19:09:46Z
date_updated: 2023-04-21T11:15:30Z
ddc:
- '530'
department:
- _id: '296'
- _id: '230'
- _id: '429'
- _id: '295'
- _id: '15'
- _id: '170'
- _id: '790'
doi: 10.1103/PhysRevB.104.174110
external_id:
arxiv:
- '2106.01145'
isi:
- '000720931400007'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2021-11-18T20:49:19Z
date_updated: 2021-11-18T20:49:19Z
description: © 2021 American Physical Society
file_id: '27577'
file_name: PhysRevB.104.174110.pdf
file_size: 804012
relation: main_file
title: Polaronic enhancement of second-harmonic generation in lithium niobate
file_date_updated: 2021-11-18T20:49:19Z
has_accepted_license: '1'
intvolume: ' 104'
isi: '1'
language:
- iso: eng
oa: '1'
page: '174110'
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '69'
name: TRR 142 - Subproject B4
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Polaronic enhancement of second-harmonic generation in lithium niobate
type: journal_article
user_id: '171'
volume: 104
year: '2021'
...
---
_id: '37333'
article_number: '085201'
author:
- first_name: L.
full_name: Krauss-Kodytek, L.
last_name: Krauss-Kodytek
- first_name: W.-R.
full_name: Hannes, W.-R.
last_name: Hannes
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: C.
full_name: Ruppert, C.
last_name: Ruppert
- first_name: M.
full_name: Betz, M.
last_name: Betz
citation:
ama: 'Krauss-Kodytek L, Hannes W-R, Meier T, Ruppert C, Betz M. Nondegenerate two-photon
absorption in ZnSe: Experiment and theory. Physical Review B. 2021;104(8).
doi:10.1103/physrevb.104.085201'
apa: 'Krauss-Kodytek, L., Hannes, W.-R., Meier, T., Ruppert, C., & Betz, M.
(2021). Nondegenerate two-photon absorption in ZnSe: Experiment and theory. Physical
Review B, 104(8), Article 085201. https://doi.org/10.1103/physrevb.104.085201'
bibtex: '@article{Krauss-Kodytek_Hannes_Meier_Ruppert_Betz_2021, title={Nondegenerate
two-photon absorption in ZnSe: Experiment and theory}, volume={104}, DOI={10.1103/physrevb.104.085201},
number={8085201}, journal={Physical Review B}, publisher={American Physical Society
(APS)}, author={Krauss-Kodytek, L. and Hannes, W.-R. and Meier, Torsten and Ruppert,
C. and Betz, M.}, year={2021} }'
chicago: 'Krauss-Kodytek, L., W.-R. Hannes, Torsten Meier, C. Ruppert, and M. Betz.
“Nondegenerate Two-Photon Absorption in ZnSe: Experiment and Theory.” Physical
Review B 104, no. 8 (2021). https://doi.org/10.1103/physrevb.104.085201.'
ieee: 'L. Krauss-Kodytek, W.-R. Hannes, T. Meier, C. Ruppert, and M. Betz, “Nondegenerate
two-photon absorption in ZnSe: Experiment and theory,” Physical Review B,
vol. 104, no. 8, Art. no. 085201, 2021, doi: 10.1103/physrevb.104.085201.'
mla: 'Krauss-Kodytek, L., et al. “Nondegenerate Two-Photon Absorption in ZnSe: Experiment
and Theory.” Physical Review B, vol. 104, no. 8, 085201, American Physical
Society (APS), 2021, doi:10.1103/physrevb.104.085201.'
short: L. Krauss-Kodytek, W.-R. Hannes, T. Meier, C. Ruppert, M. Betz, Physical
Review B 104 (2021).
date_created: 2023-01-18T11:30:11Z
date_updated: 2023-04-21T11:14:40Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '35'
doi: 10.1103/physrevb.104.085201
intvolume: ' 104'
issue: '8'
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '64'
name: 'TRR 142 - A7: TRR 142 - Subproject A7'
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Nondegenerate two-photon absorption in ZnSe: Experiment and theory'
type: journal_article
user_id: '16199'
volume: 104
year: '2021'
...