---
_id: '33965'
author:
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
- first_name: Hans-Georg
full_name: Steinrück, Hans-Georg
id: '84268'
last_name: Steinrück
orcid: 0000-0001-6373-0877
- first_name: Gerald
full_name: Henkel, Gerald
last_name: Henkel
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Bocchini A, Gerstmann U, Bartley T, Steinrück H-G, Henkel G, Schmidt WG. Electrochemical
performance of KTiOAsO_4 (KTA) in potassium-ion batteries from density-functional
theory. Phys Rev Materials. 2022;6:105401. doi:10.1103/PhysRevMaterials.6.105401
apa: Bocchini, A., Gerstmann, U., Bartley, T., Steinrück, H.-G., Henkel, G., &
Schmidt, W. G. (2022). Electrochemical performance of KTiOAsO_4 (KTA) in potassium-ion
batteries from density-functional theory. Phys. Rev. Materials, 6,
105401. https://doi.org/10.1103/PhysRevMaterials.6.105401
bibtex: '@article{Bocchini_Gerstmann_Bartley_Steinrück_Henkel_Schmidt_2022, title={Electrochemical
performance of KTiOAsO_4 (KTA) in potassium-ion batteries from density-functional
theory}, volume={6}, DOI={10.1103/PhysRevMaterials.6.105401},
journal={Phys. Rev. Materials}, publisher={American Physical Society}, author={Bocchini,
Adriana and Gerstmann, Uwe and Bartley, Tim and Steinrück, Hans-Georg and Henkel,
Gerald and Schmidt, Wolf Gero}, year={2022}, pages={105401} }'
chicago: 'Bocchini, Adriana, Uwe Gerstmann, Tim Bartley, Hans-Georg Steinrück, Gerald
Henkel, and Wolf Gero Schmidt. “Electrochemical Performance of KTiOAsO_4 (KTA)
in Potassium-Ion Batteries from Density-Functional Theory.” Phys. Rev. Materials
6 (2022): 105401. https://doi.org/10.1103/PhysRevMaterials.6.105401.'
ieee: 'A. Bocchini, U. Gerstmann, T. Bartley, H.-G. Steinrück, G. Henkel, and W.
G. Schmidt, “Electrochemical performance of KTiOAsO_4 (KTA) in potassium-ion batteries
from density-functional theory,” Phys. Rev. Materials, vol. 6, p. 105401,
2022, doi: 10.1103/PhysRevMaterials.6.105401.'
mla: Bocchini, Adriana, et al. “Electrochemical Performance of KTiOAsO_4 (KTA) in
Potassium-Ion Batteries from Density-Functional Theory.” Phys. Rev. Materials,
vol. 6, American Physical Society, 2022, p. 105401, doi:10.1103/PhysRevMaterials.6.105401.
short: A. Bocchini, U. Gerstmann, T. Bartley, H.-G. Steinrück, G. Henkel, W.G. Schmidt,
Phys. Rev. Materials 6 (2022) 105401.
date_created: 2022-10-31T15:00:19Z
date_updated: 2023-04-21T11:30:08Z
ddc:
- '530'
department:
- _id: '15'
- _id: '295'
- _id: '230'
- _id: '2'
- _id: '165'
- _id: '633'
- _id: '429'
- _id: '35'
- _id: '790'
doi: 10.1103/PhysRevMaterials.6.105401
file:
- access_level: closed
content_type: application/pdf
creator: adrianab
date_created: 2022-10-31T15:05:24Z
date_updated: 2022-10-31T15:05:24Z
file_id: '33966'
file_name: PhysRevMaterials.6.105401.pdf
file_size: 3945388
relation: main_file
success: 1
file_date_updated: 2022-10-31T15:05:24Z
has_accepted_license: '1'
intvolume: ' 6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.6.105401
oa: '1'
page: '105401'
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: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
publication: Phys. Rev. Materials
publication_status: published
publisher: American Physical Society
status: public
title: Electrochemical performance of KTiOAsO_4 (KTA) in potassium-ion batteries from
density-functional theory
type: journal_article
user_id: '171'
volume: 6
year: '2022'
...
---
_id: '31254'
author:
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- 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: 'Bocchini A, Gerstmann U, Schmidt WG. Oxygen vacancies in KTiOPO_4: Optical
absorption from hybrid DFT. Phys Rev B. 2022;105:205118. doi:10.1103/PhysRevB.105.205118'
apa: 'Bocchini, A., Gerstmann, U., & Schmidt, W. G. (2022). Oxygen vacancies
in KTiOPO_4: Optical absorption from hybrid DFT. Phys. Rev. B, 105,
205118. https://doi.org/10.1103/PhysRevB.105.205118'
bibtex: '@article{Bocchini_Gerstmann_Schmidt_2022, title={Oxygen vacancies in KTiOPO_4:
Optical absorption from hybrid DFT}, volume={105}, DOI={10.1103/PhysRevB.105.205118},
journal={Phys. Rev. B}, publisher={American Physical Society}, author={Bocchini,
Adriana and Gerstmann, Uwe and Schmidt, Wolf Gero}, year={2022}, pages={205118}
}'
chicago: 'Bocchini, Adriana, Uwe Gerstmann, and Wolf Gero Schmidt. “Oxygen Vacancies
in KTiOPO_4: Optical Absorption from Hybrid DFT.” Phys. Rev. B 105 (2022):
205118. https://doi.org/10.1103/PhysRevB.105.205118.'
ieee: 'A. Bocchini, U. Gerstmann, and W. G. Schmidt, “Oxygen vacancies in KTiOPO_4:
Optical absorption from hybrid DFT,” Phys. Rev. B, vol. 105, p. 205118,
2022, doi: 10.1103/PhysRevB.105.205118.'
mla: 'Bocchini, Adriana, et al. “Oxygen Vacancies in KTiOPO_4: Optical Absorption
from Hybrid DFT.” Phys. Rev. B, vol. 105, American Physical Society, 2022,
p. 205118, doi:10.1103/PhysRevB.105.205118.'
short: A. Bocchini, U. Gerstmann, W.G. Schmidt, Phys. Rev. B 105 (2022) 205118.
date_created: 2022-05-16T14:41:02Z
date_updated: 2023-04-21T11:29:05Z
department:
- _id: '15'
- _id: '295'
- _id: '170'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '790'
doi: 10.1103/PhysRevB.105.205118
intvolume: ' 105'
language:
- iso: eng
page: '205118'
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: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
publication: Phys. Rev. B
publisher: American Physical Society
status: public
title: 'Oxygen vacancies in KTiOPO_4: Optical absorption from hybrid DFT'
type: journal_article
user_id: '171'
volume: 105
year: '2022'
...
---
_id: '46484'
abstract:
- lang: eng
text: Efficient third-harmonic generation control is theoretically studied. Dielectric
nanostructures placed on the metallic substrate could offer effective geometric-phase
modulation on third-harmonic signals by selecting proper structure rotational
symmetry.
article_number: FTh1A.7
author:
- first_name: Bingyi
full_name: Liu, Bingyi
last_name: Liu
- 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: 'Liu B, Huang L, Zentgraf T. Efficient Third-harmonic Generation Control with
Ultrathin Dielectric Geometric-phase Metasurface. In: Conference on Lasers
and Electro-Optics. Technical Digest Series. Optica Publishing Group; 2022.
doi:10.1364/cleo_qels.2022.fth1a.7'
apa: 'Liu, B., Huang, L., & Zentgraf, T. (2022). Efficient Third-harmonic Generation
Control with Ultrathin Dielectric Geometric-phase Metasurface. Conference on
Lasers and Electro-Optics, Article FTh1A.7. CLEO: QELS_Fundamental Science
2022, San Jose, USA. https://doi.org/10.1364/cleo_qels.2022.fth1a.7'
bibtex: '@inproceedings{Liu_Huang_Zentgraf_2022, series={Technical Digest Series},
title={Efficient Third-harmonic Generation Control with Ultrathin Dielectric Geometric-phase
Metasurface}, DOI={10.1364/cleo_qels.2022.fth1a.7},
number={FTh1A.7}, booktitle={Conference on Lasers and Electro-Optics}, publisher={Optica
Publishing Group}, author={Liu, Bingyi and Huang, Lingling and Zentgraf, Thomas},
year={2022}, collection={Technical Digest Series} }'
chicago: Liu, Bingyi, Lingling Huang, and Thomas Zentgraf. “Efficient Third-Harmonic
Generation Control with Ultrathin Dielectric Geometric-Phase Metasurface.” In
Conference on Lasers and Electro-Optics. Technical Digest Series. Optica
Publishing Group, 2022. https://doi.org/10.1364/cleo_qels.2022.fth1a.7.
ieee: 'B. Liu, L. Huang, and T. Zentgraf, “Efficient Third-harmonic Generation Control
with Ultrathin Dielectric Geometric-phase Metasurface,” presented at the CLEO:
QELS_Fundamental Science 2022, San Jose, USA, 2022, doi: 10.1364/cleo_qels.2022.fth1a.7.'
mla: Liu, Bingyi, et al. “Efficient Third-Harmonic Generation Control with Ultrathin
Dielectric Geometric-Phase Metasurface.” Conference on Lasers and Electro-Optics,
FTh1A.7, Optica Publishing Group, 2022, doi:10.1364/cleo_qels.2022.fth1a.7.
short: 'B. Liu, L. Huang, T. Zentgraf, in: Conference on Lasers and Electro-Optics,
Optica Publishing Group, 2022.'
conference:
end_date: 2022-05-20
location: San Jose, USA
name: 'CLEO: QELS_Fundamental Science 2022'
start_date: 2022-05-15
date_created: 2023-08-14T08:13:24Z
date_updated: 2023-08-14T08:18:20Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1364/cleo_qels.2022.fth1a.7
language:
- iso: eng
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '170'
grant_number: '231447078'
name: 'TRR 142 - B09: TRR 142 - Effiziente Erzeugung mit maßgeschneiderter optischer
Phaselage der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen
(B09*)'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
publication: Conference on Lasers and Electro-Optics
publication_status: published
publisher: Optica Publishing Group
series_title: Technical Digest Series
status: public
title: Efficient Third-harmonic Generation Control with Ultrathin Dielectric Geometric-phase
Metasurface
type: conference
user_id: '30525'
year: '2022'
...
---
_id: '32088'
abstract:
- lang: eng
text: Subwavelength dielectric resonators assembled into metasurfaces have become
a versatile tool for miniaturizing optical components approaching the nanoscale.
An important class of metasurface functionalities is associated with asymmetry
in both the generation and transmission of light with respect to reversals of
the positions of emitters and receivers. The nonlinear light–matter interaction
in metasurfaces offers a promising pathway towards miniaturization of the asymmetric
control of light. Here we demonstrate asymmetric parametric generation of light
in nonlinear metasurfaces. We assemble dissimilar nonlinear dielectric resonators
into translucent metasurfaces that produce images in the visible spectral range
on being illuminated by infrared radiation. By design, the metasurfaces produce
different and completely independent images for the reversed direction of illumination,
that is, when the positions of the infrared emitter and the visible light receiver
are exchanged. Nonlinearity-enabled asymmetric control of light by subwavelength
resonators paves the way towards novel nanophotonic components via dense integration
of large quantities of nonlinear resonators into compact metasurface designs.
article_type: original
author:
- first_name: Sergey S.
full_name: Kruk, Sergey S.
last_name: Kruk
- first_name: Lei
full_name: Wang, Lei
last_name: Wang
- first_name: Basudeb
full_name: Sain, Basudeb
last_name: Sain
- first_name: Zhaogang
full_name: Dong, Zhaogang
last_name: Dong
- first_name: Joel
full_name: Yang, Joel
last_name: Yang
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Yuri
full_name: Kivshar, Yuri
last_name: Kivshar
citation:
ama: Kruk SS, Wang L, Sain B, et al. Asymmetric parametric generation of images
with nonlinear dielectric metasurfaces. Nature Photonics. 2022;16:561–565.
doi:10.1038/s41566-022-01018-7
apa: Kruk, S. S., Wang, L., Sain, B., Dong, Z., Yang, J., Zentgraf, T., & Kivshar,
Y. (2022). Asymmetric parametric generation of images with nonlinear dielectric
metasurfaces. Nature Photonics, 16, 561–565. https://doi.org/10.1038/s41566-022-01018-7
bibtex: '@article{Kruk_Wang_Sain_Dong_Yang_Zentgraf_Kivshar_2022, title={Asymmetric
parametric generation of images with nonlinear dielectric metasurfaces}, volume={16},
DOI={10.1038/s41566-022-01018-7},
journal={Nature Photonics}, publisher={Springer Science and Business Media LLC},
author={Kruk, Sergey S. and Wang, Lei and Sain, Basudeb and Dong, Zhaogang and
Yang, Joel and Zentgraf, Thomas and Kivshar, Yuri}, year={2022}, pages={561–565}
}'
chicago: 'Kruk, Sergey S., Lei Wang, Basudeb Sain, Zhaogang Dong, Joel Yang, Thomas
Zentgraf, and Yuri Kivshar. “Asymmetric Parametric Generation of Images with Nonlinear
Dielectric Metasurfaces.” Nature Photonics 16 (2022): 561–565. https://doi.org/10.1038/s41566-022-01018-7.'
ieee: 'S. S. Kruk et al., “Asymmetric parametric generation of images with
nonlinear dielectric metasurfaces,” Nature Photonics, vol. 16, pp. 561–565,
2022, doi: 10.1038/s41566-022-01018-7.'
mla: Kruk, Sergey S., et al. “Asymmetric Parametric Generation of Images with Nonlinear
Dielectric Metasurfaces.” Nature Photonics, vol. 16, Springer Science and
Business Media LLC, 2022, pp. 561–565, doi:10.1038/s41566-022-01018-7.
short: S.S. Kruk, L. Wang, B. Sain, Z. Dong, J. Yang, T. Zentgraf, Y. Kivshar, Nature
Photonics 16 (2022) 561–565.
date_created: 2022-06-21T05:52:43Z
date_updated: 2025-05-21T08:49:00Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1038/s41566-022-01018-7
intvolume: ' 16'
keyword:
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2108.04425
oa: '1'
page: 561–565
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '170'
grant_number: '231447078'
name: 'TRR 142 - B09: TRR 142 - Effiziente Erzeugung mit maßgeschneiderter optischer
Phaselage der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen
(B09*)'
publication: Nature Photonics
publication_identifier:
issn:
- 1749-4885
- 1749-4893
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Asymmetric parametric generation of images with nonlinear dielectric metasurfaces
type: journal_article
user_id: '30525'
volume: 16
year: '2022'
...
---
_id: '44088'
abstract:
- lang: eng
text: 'Hole polarons and defect-bound exciton polarons in lithium niobate are investigated
by means of density-functional theory, where the localization of the holes is
achieved by applying the +U approach to the oxygen 2p orbitals. We find three
principal configurations of hole polarons: (i) self-trapped holes localized at
displaced regular oxygen atoms and (ii) two other configurations bound to a lithium
vacancy either at a threefold coordinated oxygen atom above or at a two-fold coordinated
oxygen atom below the defect. The latter is the most stable and is in excellent
quantitative agreement with measured g factors from electron paramagnetic resonance.
Due to the absence of mid-gap states, none of these hole polarons can explain
the broad optical absorption centered between 2.5 and 2.8 eV that is observed
in transient absorption spectroscopy, but such states appear if a free electron
polaron is trapped at the same lithium vacancy as the bound hole polaron, resulting
in an exciton polaron. The dielectric function calculated by solving the Bethe–Salpeter
equation indeed yields an optical peak at 2.6 eV in agreement with the two-photon
experiments. The coexistence of hole and exciton polarons, which are simultaneously
created in optical excitations, thus satisfactorily explains the reported experimental
data.'
article_number: '1586'
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: 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. A density-functional
theory study of hole and defect-bound exciton polarons in lithium niobate. Crystals.
2022;12(11). doi:10.3390/cryst12111586
apa: Schmidt, F., Kozub, A. L., Gerstmann, U., Schmidt, W. G., & Schindlmayr,
A. (2022). A density-functional theory study of hole and defect-bound exciton
polarons in lithium niobate. Crystals, 12(11), Article 1586. https://doi.org/10.3390/cryst12111586
bibtex: '@article{Schmidt_Kozub_Gerstmann_Schmidt_Schindlmayr_2022, title={A density-functional
theory study of hole and defect-bound exciton polarons in lithium niobate}, volume={12},
DOI={10.3390/cryst12111586},
number={111586}, journal={Crystals}, publisher={MDPI AG}, author={Schmidt, Falko
and Kozub, Agnieszka L. and Gerstmann, Uwe and Schmidt, Wolf Gero and Schindlmayr,
Arno}, year={2022} }'
chicago: Schmidt, Falko, Agnieszka L. Kozub, Uwe Gerstmann, Wolf Gero Schmidt, and
Arno Schindlmayr. “A Density-Functional Theory Study of Hole and Defect-Bound
Exciton Polarons in Lithium Niobate.” Crystals 12, no. 11 (2022). https://doi.org/10.3390/cryst12111586.
ieee: 'F. Schmidt, A. L. Kozub, U. Gerstmann, W. G. Schmidt, and A. Schindlmayr,
“A density-functional theory study of hole and defect-bound exciton polarons in
lithium niobate,” Crystals, vol. 12, no. 11, Art. no. 1586, 2022, doi:
10.3390/cryst12111586.'
mla: Schmidt, Falko, et al. “A Density-Functional Theory Study of Hole and Defect-Bound
Exciton Polarons in Lithium Niobate.” Crystals, vol. 12, no. 11, 1586,
MDPI AG, 2022, doi:10.3390/cryst12111586.
short: F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, Crystals
12 (2022).
date_created: 2023-04-20T13:52:44Z
date_updated: 2025-09-18T13:28:05Z
ddc:
- '530'
department:
- _id: '15'
- _id: '296'
- _id: '170'
- _id: '295'
- _id: '35'
- _id: '230'
- _id: '429'
- _id: '27'
doi: 10.3390/cryst12111586
external_id:
isi:
- '000895837200001'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2023-06-11T23:59:27Z
date_updated: 2023-06-12T00:22:51Z
description: Creative Commons Attribution 4.0 International Public License (CC BY
4.0)
file_id: '45570'
file_name: crystals-12-01586-v2.pdf
file_size: 1762554
relation: main_file
title: A density-functional theory study of hole and defect-bound exciton polarons
in lithium niobate
file_date_updated: 2023-06-12T00:22:51Z
has_accepted_license: '1'
intvolume: ' 12'
isi: '1'
issue: '11'
language:
- iso: eng
oa: '1'
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '69'
name: 'TRR 142 - B04: TRR 142 - Subproject B04'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _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 AG
quality_controlled: '1'
status: public
title: A density-functional theory study of hole and defect-bound exciton polarons
in lithium niobate
type: journal_article
user_id: '16199'
volume: 12
year: '2022'
...
---
_id: '34094'
article_number: '201103'
author:
- first_name: Ying
full_name: Gao, Ying
last_name: Gao
- first_name: Yao
full_name: Li, Yao
last_name: Li
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Meini
full_name: Gao, Meini
last_name: Gao
- first_name: Haitao
full_name: Dai, Haitao
last_name: Dai
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Tingge
full_name: Gao, Tingge
last_name: Gao
citation:
ama: Gao Y, Li Y, Ma X, et al. Tilting nondispersive bands in an empty microcavity.
Applied Physics Letters. 2022;121(20). doi:10.1063/5.0093908
apa: Gao, Y., Li, Y., Ma, X., Gao, M., Dai, H., Schumacher, S., & Gao, T. (2022).
Tilting nondispersive bands in an empty microcavity. Applied Physics Letters,
121(20), Article 201103. https://doi.org/10.1063/5.0093908
bibtex: '@article{Gao_Li_Ma_Gao_Dai_Schumacher_Gao_2022, title={Tilting nondispersive
bands in an empty microcavity}, volume={121}, DOI={10.1063/5.0093908},
number={20201103}, journal={Applied Physics Letters}, publisher={AIP Publishing},
author={Gao, Ying and Li, Yao and Ma, Xuekai and Gao, Meini and Dai, Haitao and
Schumacher, Stefan and Gao, Tingge}, year={2022} }'
chicago: Gao, Ying, Yao Li, Xuekai Ma, Meini Gao, Haitao Dai, Stefan Schumacher,
and Tingge Gao. “Tilting Nondispersive Bands in an Empty Microcavity.” Applied
Physics Letters 121, no. 20 (2022). https://doi.org/10.1063/5.0093908.
ieee: 'Y. Gao et al., “Tilting nondispersive bands in an empty microcavity,”
Applied Physics Letters, vol. 121, no. 20, Art. no. 201103, 2022, doi:
10.1063/5.0093908.'
mla: Gao, Ying, et al. “Tilting Nondispersive Bands in an Empty Microcavity.” Applied
Physics Letters, vol. 121, no. 20, 201103, AIP Publishing, 2022, doi:10.1063/5.0093908.
short: Y. Gao, Y. Li, X. Ma, M. Gao, H. Dai, S. Schumacher, T. Gao, Applied Physics
Letters 121 (2022).
date_created: 2022-11-16T12:29:11Z
date_updated: 2025-12-05T13:50:49Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1063/5.0093908
intvolume: ' 121'
issue: '20'
keyword:
- Physics and Astronomy (miscellaneous)
language:
- iso: eng
project:
- _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'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
status: public
title: Tilting nondispersive bands in an empty microcavity
type: journal_article
user_id: '16199'
volume: 121
year: '2022'
...
---
_id: '31937'
author:
- first_name: Yao
full_name: Li, Yao
last_name: Li
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Zaharias
full_name: Hatzopoulos, Zaharias
last_name: Hatzopoulos
- first_name: Pavlos G.
full_name: Savvidis, Pavlos G.
last_name: Savvidis
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Tingge
full_name: Gao, Tingge
last_name: Gao
citation:
ama: Li Y, Ma X, Hatzopoulos Z, Savvidis PG, Schumacher S, Gao T. Switching Off
a Microcavity Polariton Condensate near the Exceptional Point. ACS Photonics.
2022;9(6):2079-2086. doi:10.1021/acsphotonics.2c00288
apa: Li, Y., Ma, X., Hatzopoulos, Z., Savvidis, P. G., Schumacher, S., & Gao,
T. (2022). Switching Off a Microcavity Polariton Condensate near the Exceptional
Point. ACS Photonics, 9(6), 2079–2086. https://doi.org/10.1021/acsphotonics.2c00288
bibtex: '@article{Li_Ma_Hatzopoulos_Savvidis_Schumacher_Gao_2022, title={Switching
Off a Microcavity Polariton Condensate near the Exceptional Point}, volume={9},
DOI={10.1021/acsphotonics.2c00288},
number={6}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)},
author={Li, Yao and Ma, Xuekai and Hatzopoulos, Zaharias and Savvidis, Pavlos
G. and Schumacher, Stefan and Gao, Tingge}, year={2022}, pages={2079–2086} }'
chicago: 'Li, Yao, Xuekai Ma, Zaharias Hatzopoulos, Pavlos G. Savvidis, Stefan Schumacher,
and Tingge Gao. “Switching Off a Microcavity Polariton Condensate near the Exceptional
Point.” ACS Photonics 9, no. 6 (2022): 2079–86. https://doi.org/10.1021/acsphotonics.2c00288.'
ieee: 'Y. Li, X. Ma, Z. Hatzopoulos, P. G. Savvidis, S. Schumacher, and T. Gao,
“Switching Off a Microcavity Polariton Condensate near the Exceptional Point,”
ACS Photonics, vol. 9, no. 6, pp. 2079–2086, 2022, doi: 10.1021/acsphotonics.2c00288.'
mla: Li, Yao, et al. “Switching Off a Microcavity Polariton Condensate near the
Exceptional Point.” ACS Photonics, vol. 9, no. 6, American Chemical Society
(ACS), 2022, pp. 2079–86, doi:10.1021/acsphotonics.2c00288.
short: Y. Li, X. Ma, Z. Hatzopoulos, P.G. Savvidis, S. Schumacher, T. Gao, ACS Photonics
9 (2022) 2079–2086.
date_created: 2022-06-19T19:26:12Z
date_updated: 2025-12-05T13:51:31Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1021/acsphotonics.2c00288
intvolume: ' 9'
issue: '6'
language:
- iso: eng
page: 2079-2086
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'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: ACS Photonics
publication_identifier:
issn:
- 2330-4022
- 2330-4022
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Switching Off a Microcavity Polariton Condensate near the Exceptional Point
type: journal_article
user_id: '16199'
volume: 9
year: '2022'
...
---
_id: '37713'
author:
- first_name: Fadis F.
full_name: Murzakhanov, Fadis F.
last_name: Murzakhanov
- first_name: Georgy Vladimirovich
full_name: Mamin, Georgy Vladimirovich
last_name: Mamin
- first_name: Sergei Borisovich
full_name: Orlinskii, Sergei Borisovich
last_name: Orlinskii
- 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: Timur
full_name: Biktagirov, Timur
id: '65612'
last_name: Biktagirov
- first_name: Igor
full_name: Aharonovich, Igor
last_name: Aharonovich
- first_name: Andreas
full_name: Gottscholl, Andreas
last_name: Gottscholl
- first_name: Andreas
full_name: Sperlich, Andreas
last_name: Sperlich
- first_name: Vladimir
full_name: Dyakonov, Vladimir
last_name: Dyakonov
- first_name: Victor A.
full_name: Soltamov, Victor A.
last_name: Soltamov
citation:
ama: Murzakhanov FF, Mamin GV, Orlinskii SB, et al. Electron–Nuclear Coherent Coupling
and Nuclear Spin Readout through Optically Polarized VB–
Spin States in hBN. Nano Letters. 2022;22(7):2718-2724. doi:10.1021/acs.nanolett.1c04610
apa: Murzakhanov, F. F., Mamin, G. V., Orlinskii, S. B., Gerstmann, U., Schmidt,
W. G., Biktagirov, T., Aharonovich, I., Gottscholl, A., Sperlich, A., Dyakonov,
V., & Soltamov, V. A. (2022). Electron–Nuclear Coherent Coupling and Nuclear
Spin Readout through Optically Polarized VB– Spin States
in hBN. Nano Letters, 22(7), 2718–2724. https://doi.org/10.1021/acs.nanolett.1c04610
bibtex: '@article{Murzakhanov_Mamin_Orlinskii_Gerstmann_Schmidt_Biktagirov_Aharonovich_Gottscholl_Sperlich_Dyakonov_et
al._2022, title={Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through
Optically Polarized VB– Spin States in hBN}, volume={22},
DOI={10.1021/acs.nanolett.1c04610},
number={7}, journal={Nano Letters}, publisher={American Chemical Society (ACS)},
author={Murzakhanov, Fadis F. and Mamin, Georgy Vladimirovich and Orlinskii, Sergei
Borisovich and Gerstmann, Uwe and Schmidt, Wolf Gero and Biktagirov, Timur and
Aharonovich, Igor and Gottscholl, Andreas and Sperlich, Andreas and Dyakonov,
Vladimir and et al.}, year={2022}, pages={2718–2724} }'
chicago: 'Murzakhanov, Fadis F., Georgy Vladimirovich Mamin, Sergei Borisovich Orlinskii,
Uwe Gerstmann, Wolf Gero Schmidt, Timur Biktagirov, Igor Aharonovich, et al. “Electron–Nuclear
Coherent Coupling and Nuclear Spin Readout through Optically Polarized VB–
Spin States in HBN.” Nano Letters 22, no. 7 (2022): 2718–24. https://doi.org/10.1021/acs.nanolett.1c04610.'
ieee: 'F. F. Murzakhanov et al., “Electron–Nuclear Coherent Coupling and
Nuclear Spin Readout through Optically Polarized VB– Spin
States in hBN,” Nano Letters, vol. 22, no. 7, pp. 2718–2724, 2022, doi:
10.1021/acs.nanolett.1c04610.'
mla: Murzakhanov, Fadis F., et al. “Electron–Nuclear Coherent Coupling and Nuclear
Spin Readout through Optically Polarized VB– Spin States
in HBN.” Nano Letters, vol. 22, no. 7, American Chemical Society (ACS),
2022, pp. 2718–24, doi:10.1021/acs.nanolett.1c04610.
short: F.F. Murzakhanov, G.V. Mamin, S.B. Orlinskii, U. Gerstmann, W.G. Schmidt,
T. Biktagirov, I. Aharonovich, A. Gottscholl, A. Sperlich, V. Dyakonov, V.A. Soltamov,
Nano Letters 22 (2022) 2718–2724.
date_created: 2023-01-20T11:21:22Z
date_updated: 2025-12-05T13:57:24Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '790'
doi: 10.1021/acs.nanolett.1c04610
intvolume: ' 22'
issue: '7'
keyword:
- Mechanical Engineering
- Condensed Matter Physics
- General Materials Science
- General Chemistry
- Bioengineering
language:
- iso: eng
page: 2718-2724
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Nano Letters
publication_identifier:
issn:
- 1530-6984
- 1530-6992
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically
Polarized VB– Spin States in hBN
type: journal_article
user_id: '16199'
volume: 22
year: '2022'
...
---
_id: '33080'
article_number: '2203588'
author:
- first_name: Teng
full_name: Long, Teng
last_name: Long
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Jiahuan
full_name: Ren, Jiahuan
last_name: Ren
- first_name: Feng
full_name: Li, Feng
last_name: Li
- first_name: Qing
full_name: Liao, Qing
last_name: Liao
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Guillaume
full_name: Malpuech, Guillaume
last_name: Malpuech
- first_name: Dmitry
full_name: Solnyshkov, Dmitry
last_name: Solnyshkov
- first_name: Hongbing
full_name: Fu, Hongbing
last_name: Fu
citation:
ama: Long T, Ma X, Ren J, et al. Helical Polariton Lasing from Topological Valleys
in an Organic Crystalline Microcavity. Advanced Science. 2022;9(29). doi:10.1002/advs.202203588
apa: Long, T., Ma, X., Ren, J., Li, F., Liao, Q., Schumacher, S., Malpuech, G.,
Solnyshkov, D., & Fu, H. (2022). Helical Polariton Lasing from Topological
Valleys in an Organic Crystalline Microcavity. Advanced Science, 9(29),
Article 2203588. https://doi.org/10.1002/advs.202203588
bibtex: '@article{Long_Ma_Ren_Li_Liao_Schumacher_Malpuech_Solnyshkov_Fu_2022, title={Helical
Polariton Lasing from Topological Valleys in an Organic Crystalline Microcavity},
volume={9}, DOI={10.1002/advs.202203588},
number={292203588}, journal={Advanced Science}, publisher={Wiley}, author={Long,
Teng and Ma, Xuekai and Ren, Jiahuan and Li, Feng and Liao, Qing and Schumacher,
Stefan and Malpuech, Guillaume and Solnyshkov, Dmitry and Fu, Hongbing}, year={2022}
}'
chicago: Long, Teng, Xuekai Ma, Jiahuan Ren, Feng Li, Qing Liao, Stefan Schumacher,
Guillaume Malpuech, Dmitry Solnyshkov, and Hongbing Fu. “Helical Polariton Lasing
from Topological Valleys in an Organic Crystalline Microcavity.” Advanced Science
9, no. 29 (2022). https://doi.org/10.1002/advs.202203588.
ieee: 'T. Long et al., “Helical Polariton Lasing from Topological Valleys
in an Organic Crystalline Microcavity,” Advanced Science, vol. 9, no. 29,
Art. no. 2203588, 2022, doi: 10.1002/advs.202203588.'
mla: Long, Teng, et al. “Helical Polariton Lasing from Topological Valleys in an
Organic Crystalline Microcavity.” Advanced Science, vol. 9, no. 29, 2203588,
Wiley, 2022, doi:10.1002/advs.202203588.
short: T. Long, X. Ma, J. Ren, F. Li, Q. Liao, S. Schumacher, G. Malpuech, D. Solnyshkov,
H. Fu, Advanced Science 9 (2022).
date_created: 2022-08-22T19:05:04Z
date_updated: 2025-12-05T13:56:26Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1002/advs.202203588
intvolume: ' 9'
issue: '29'
keyword:
- General Physics and Astronomy
- General Engineering
- Biochemistry
- Genetics and Molecular Biology (miscellaneous)
- General Materials Science
- General Chemical Engineering
- Medicine (miscellaneous)
language:
- iso: eng
project:
- _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'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Advanced Science
publication_identifier:
issn:
- 2198-3844
- 2198-3844
publication_status: published
publisher: Wiley
status: public
title: Helical Polariton Lasing from Topological Valleys in an Organic Crystalline
Microcavity
type: journal_article
user_id: '16199'
volume: 9
year: '2022'
...
---
_id: '32310'
article_number: '3785'
author:
- first_name: Yao
full_name: Li, Yao
last_name: Li
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Xiaokun
full_name: Zhai, Xiaokun
last_name: Zhai
- first_name: Meini
full_name: Gao, Meini
last_name: Gao
- first_name: Haitao
full_name: Dai, Haitao
last_name: Dai
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Tingge
full_name: Gao, Tingge
last_name: Gao
citation:
ama: Li Y, Ma X, Zhai X, et al. Manipulating polariton condensates by Rashba-Dresselhaus
coupling at room temperature. Nature Communications. 2022;13(1). doi:10.1038/s41467-022-31529-4
apa: Li, Y., Ma, X., Zhai, X., Gao, M., Dai, H., Schumacher, S., & Gao, T. (2022).
Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature.
Nature Communications, 13(1), Article 3785. https://doi.org/10.1038/s41467-022-31529-4
bibtex: '@article{Li_Ma_Zhai_Gao_Dai_Schumacher_Gao_2022, title={Manipulating polariton
condensates by Rashba-Dresselhaus coupling at room temperature}, volume={13},
DOI={10.1038/s41467-022-31529-4},
number={13785}, journal={Nature Communications}, publisher={Springer Science and
Business Media LLC}, author={Li, Yao and Ma, Xuekai and Zhai, Xiaokun and Gao,
Meini and Dai, Haitao and Schumacher, Stefan and Gao, Tingge}, year={2022} }'
chicago: Li, Yao, Xuekai Ma, Xiaokun Zhai, Meini Gao, Haitao Dai, Stefan Schumacher,
and Tingge Gao. “Manipulating Polariton Condensates by Rashba-Dresselhaus Coupling
at Room Temperature.” Nature Communications 13, no. 1 (2022). https://doi.org/10.1038/s41467-022-31529-4.
ieee: 'Y. Li et al., “Manipulating polariton condensates by Rashba-Dresselhaus
coupling at room temperature,” Nature Communications, vol. 13, no. 1, Art.
no. 3785, 2022, doi: 10.1038/s41467-022-31529-4.'
mla: Li, Yao, et al. “Manipulating Polariton Condensates by Rashba-Dresselhaus Coupling
at Room Temperature.” Nature Communications, vol. 13, no. 1, 3785, Springer
Science and Business Media LLC, 2022, doi:10.1038/s41467-022-31529-4.
short: Y. Li, X. Ma, X. Zhai, M. Gao, H. Dai, S. Schumacher, T. Gao, Nature Communications
13 (2022).
date_created: 2022-07-01T09:12:53Z
date_updated: 2025-12-05T13:54:19Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '623'
- _id: '35'
doi: 10.1038/s41467-022-31529-4
intvolume: ' 13'
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: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature
type: journal_article
user_id: '16199'
volume: 13
year: '2022'
...
---
_id: '32148'
author:
- first_name: Xinghui
full_name: Gao, Xinghui
last_name: Gao
- first_name: Wei
full_name: Hu, Wei
last_name: Hu
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
citation:
ama: Gao X, Hu W, Schumacher S, Ma X. Unidirectional vortex waveguides and multistable
vortex pairs in polariton condensates. Optics Letters. 2022;47(13):3235-3238.
doi:10.1364/ol.457724
apa: Gao, X., Hu, W., Schumacher, S., & Ma, X. (2022). Unidirectional vortex
waveguides and multistable vortex pairs in polariton condensates. Optics Letters,
47(13), 3235–3238. https://doi.org/10.1364/ol.457724
bibtex: '@article{Gao_Hu_Schumacher_Ma_2022, title={Unidirectional vortex waveguides
and multistable vortex pairs in polariton condensates}, volume={47}, DOI={10.1364/ol.457724},
number={13}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Gao,
Xinghui and Hu, Wei and Schumacher, Stefan and Ma, Xuekai}, year={2022}, pages={3235–3238}
}'
chicago: 'Gao, Xinghui, Wei Hu, Stefan Schumacher, and Xuekai Ma. “Unidirectional
Vortex Waveguides and Multistable Vortex Pairs in Polariton Condensates.” Optics
Letters 47, no. 13 (2022): 3235–38. https://doi.org/10.1364/ol.457724.'
ieee: 'X. Gao, W. Hu, S. Schumacher, and X. Ma, “Unidirectional vortex waveguides
and multistable vortex pairs in polariton condensates,” Optics Letters,
vol. 47, no. 13, pp. 3235–3238, 2022, doi: 10.1364/ol.457724.'
mla: Gao, Xinghui, et al. “Unidirectional Vortex Waveguides and Multistable Vortex
Pairs in Polariton Condensates.” Optics Letters, vol. 47, no. 13, Optica
Publishing Group, 2022, pp. 3235–38, doi:10.1364/ol.457724.
short: X. Gao, W. Hu, S. Schumacher, X. Ma, Optics Letters 47 (2022) 3235–3238.
date_created: 2022-06-24T07:38:11Z
date_updated: 2025-12-05T13:55:22Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1364/ol.457724
intvolume: ' 47'
issue: '13'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
page: 3235-3238
project:
- _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'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Optics Letters
publication_identifier:
issn:
- 0146-9592
- 1539-4794
publication_status: published
publisher: Optica Publishing Group
status: public
title: Unidirectional vortex waveguides and multistable vortex pairs in polariton
condensates
type: journal_article
user_id: '16199'
volume: 47
year: '2022'
...
---
_id: '30288'
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.
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.
In: Corradi G, Kovács L, eds. New Trends in Lithium Niobate: From Bulk to Nanocrystals.
MDPI; 2022:231-248. doi:10.3390/books978-3-0365-3339-1'
apa: 'Schmidt, F., Kozub, A. L., Gerstmann, U., Schmidt, W. G., & Schindlmayr,
A. (2022). Electron polarons in lithium niobate: Charge localization, lattice
deformation, and optical response. In G. Corradi & L. Kovács (Eds.), New
Trends in Lithium Niobate: From Bulk to Nanocrystals (pp. 231–248). MDPI.
https://doi.org/10.3390/books978-3-0365-3339-1'
bibtex: '@inbook{Schmidt_Kozub_Gerstmann_Schmidt_Schindlmayr_2022, place={Basel},
title={Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response}, DOI={10.3390/books978-3-0365-3339-1},
booktitle={New Trends in Lithium Niobate: From Bulk to Nanocrystals}, publisher={MDPI},
author={Schmidt, Falko and Kozub, Agnieszka L. and Gerstmann, Uwe and Schmidt,
Wolf Gero and Schindlmayr, Arno}, editor={Corradi, Gábor and Kovács, László},
year={2022}, pages={231–248} }'
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.” In New Trends in Lithium Niobate:
From Bulk to Nanocrystals, edited by Gábor Corradi and László Kovács, 231–48.
Basel: MDPI, 2022. https://doi.org/10.3390/books978-3-0365-3339-1.'
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,” in New Trends in Lithium Niobate: From Bulk to Nanocrystals,
G. Corradi and L. Kovács, Eds. Basel: MDPI, 2022, pp. 231–248.'
mla: 'Schmidt, Falko, et al. “Electron Polarons in Lithium Niobate: Charge Localization,
Lattice Deformation, and Optical Response.” New Trends in Lithium Niobate:
From Bulk to Nanocrystals, edited by Gábor Corradi and László Kovács, MDPI,
2022, pp. 231–48, doi:10.3390/books978-3-0365-3339-1.'
short: 'F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, in:
G. Corradi, L. Kovács (Eds.), New Trends in Lithium Niobate: From Bulk to Nanocrystals,
MDPI, Basel, 2022, pp. 231–248.'
date_created: 2022-03-13T15:28:47Z
date_updated: 2025-12-05T14:00:04Z
ddc:
- '530'
department:
- _id: '296'
- _id: '230'
- _id: '429'
- _id: '295'
- _id: '15'
- _id: '170'
- _id: '35'
- _id: '790'
doi: 10.3390/books978-3-0365-3339-1
editor:
- first_name: Gábor
full_name: Corradi, Gábor
last_name: Corradi
- first_name: László
full_name: Kovács, László
last_name: Kovács
language:
- iso: eng
page: 231-248
place: Basel
project:
- _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: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: 'New Trends in Lithium Niobate: From Bulk to Nanocrystals'
publication_identifier:
eisbn:
- 978-3-0365-3339-1
isbn:
- 978-3-0365-3340-7
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: 'Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response'
type: book_chapter
user_id: '16199'
year: '2022'
...
---
_id: '40371'
abstract:
- lang: eng
text: Multimode integrated interferometers have great potential for both
spectral engineering and metrological applications. However, the material dispersion
of integrated platforms constitutes an obstacle that limits the performance and
precision of such interferometers. At the same time, two-colour nonlinear interferometers
present an important tool for metrological applications, when measurements in
a certain frequency range are difficult. In this manuscript, we theoretically
developed and investigated an integrated multimode two-colour SU(1,1) interferometer
operating in a supersensitive mode. By ensuring the proper design of the integrated
platform, we suppressed the dispersion, thereby significantly increasing the visibility
of the interference pattern. The use of a continuous wave pump laser provided
the symmetry between the spectral shapes of the signal and idler photons concerning
half the pump frequency, despite different photon colours. We demonstrate that
such an interferometer overcomes the classical phase sensitivity limit for wide
parametric gain ranges, when up to 3×104 photons are generated.
article_number: '552'
author:
- first_name: Alessandro
full_name: Ferreri, Alessandro
last_name: Ferreri
- first_name: Polina R.
full_name: Sharapova, Polina R.
id: '60286'
last_name: Sharapova
citation:
ama: Ferreri A, Sharapova PR. Two-Colour Spectrally Multimode Integrated SU(1,1)
Interferometer. Symmetry. 2022;14(3). doi:10.3390/sym14030552
apa: Ferreri, A., & Sharapova, P. R. (2022). Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer. Symmetry, 14(3), Article 552.
https://doi.org/10.3390/sym14030552
bibtex: '@article{Ferreri_Sharapova_2022, title={Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer}, volume={14}, DOI={10.3390/sym14030552},
number={3552}, journal={Symmetry}, publisher={MDPI AG}, author={Ferreri, Alessandro
and Sharapova, Polina R.}, year={2022} }'
chicago: Ferreri, Alessandro, and Polina R. Sharapova. “Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer.” Symmetry 14, no. 3 (2022). https://doi.org/10.3390/sym14030552.
ieee: 'A. Ferreri and P. R. Sharapova, “Two-Colour Spectrally Multimode Integrated
SU(1,1) Interferometer,” Symmetry, vol. 14, no. 3, Art. no. 552, 2022,
doi: 10.3390/sym14030552.'
mla: Ferreri, Alessandro, and Polina R. Sharapova. “Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer.” Symmetry, vol. 14, no. 3, 552, MDPI
AG, 2022, doi:10.3390/sym14030552.
short: A. Ferreri, P.R. Sharapova, Symmetry 14 (2022).
date_created: 2023-01-26T13:54:00Z
date_updated: 2025-12-16T11:27:11Z
department:
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '429'
- _id: '230'
- _id: '9'
- _id: '27'
doi: 10.3390/sym14030552
intvolume: ' 14'
issue: '3'
keyword:
- Physics and Astronomy (miscellaneous)
- General Mathematics
- Chemistry (miscellaneous)
- Computer Science (miscellaneous)
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'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Symmetry
publication_identifier:
issn:
- 2073-8994
publication_status: published
publisher: MDPI AG
status: public
title: Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer
type: journal_article
user_id: '16199'
volume: 14
year: '2022'
...
---
_id: '30210'
abstract:
- lang: eng
text: Lithium niobate on insulator (LNOI) has a great potential for photonic integrated
circuits, providing substantial versatility in design of various integrated components.
To properly use these components in the implementation of different quantum protocols,
photons with different properties are required. In this paper, we theoretically
demonstrate a flexible source of correlated photons built on the LNOI waveguide
of a special geometry. This source is based on the parametric down-conversion
(PDC) process, in which the signal and idler photons are generated at the telecom
wavelength and have different spatial profiles and polarizations, but the same
group velocities. Distinguishability in polarizations and spatial profiles facilitates
the routing and manipulating individual photons, while the equality of their group
velocities leads to the absence of temporal walk-off between photons. We show
how the spectral properties of the generated photons and the number of their frequency
modes can be controlled depending on the pump characteristics and the waveguide
length. Finally, we discuss special regimes, in which narrowband light with strong
frequency correlations and polarization-entangled Bell states are generated at
the telecom wavelength.
author:
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Alessandro
full_name: Ferreri, Alessandro
id: '65609'
last_name: Ferreri
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Maximilian
full_name: Albert, Maximilian
last_name: Albert
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Polina R.
full_name: Sharapova, Polina R.
id: '60286'
last_name: Sharapova
citation:
ama: 'Ebers L, Ferreri A, Hammer M, et al. Flexible source of correlated photons
based on LNOI rib waveguides. Journal of Physics: Photonics. 2022;4:025001.
doi:10.1088/2515-7647/ac5a5b'
apa: 'Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., &
Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib
waveguides. Journal of Physics: Photonics, 4, 025001. https://doi.org/10.1088/2515-7647/ac5a5b'
bibtex: '@article{Ebers_Ferreri_Hammer_Albert_Meier_Förstner_Sharapova_2022, title={Flexible
source of correlated photons based on LNOI rib waveguides}, volume={4}, DOI={10.1088/2515-7647/ac5a5b},
journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Ebers,
Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier,
Cedrik and Förstner, Jens and Sharapova, Polina R.}, year={2022}, pages={025001}
}'
chicago: 'Ebers, Lena, Alessandro Ferreri, Manfred Hammer, Maximilian Albert, Cedrik
Meier, Jens Förstner, and Polina R. Sharapova. “Flexible Source of Correlated
Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics 4
(2022): 025001. https://doi.org/10.1088/2515-7647/ac5a5b.'
ieee: 'L. Ebers et al., “Flexible source of correlated photons based on LNOI
rib waveguides,” Journal of Physics: Photonics, vol. 4, p. 025001, 2022,
doi: 10.1088/2515-7647/ac5a5b.'
mla: 'Ebers, Lena, et al. “Flexible Source of Correlated Photons Based on LNOI Rib
Waveguides.” Journal of Physics: Photonics, vol. 4, IOP Publishing, 2022,
p. 025001, doi:10.1088/2515-7647/ac5a5b.'
short: 'L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R.
Sharapova, Journal of Physics: Photonics 4 (2022) 025001.'
date_created: 2022-03-07T09:51:50Z
date_updated: 2025-12-16T11:31:04Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '287'
- _id: '35'
- _id: '34'
doi: 10.1088/2515-7647/ac5a5b
intvolume: ' 4'
keyword:
- tet_topic_waveguide
language:
- iso: eng
page: '025001'
project:
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '75'
name: 'TRR 142 - C5: TRR 142 - Subproject C5'
- _id: '72'
name: 'TRR 142 - C2: TRR 142 - Subproject C2'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: 'Journal of Physics: Photonics'
publication_identifier:
issn:
- 2515-7647
publication_status: published
publisher: IOP Publishing
related_material:
link:
- description: Corrigendum for table C1
relation: erratum
url: https://doi.org/10.1088/2515-7647/acc70c
status: public
title: Flexible source of correlated photons based on LNOI rib waveguides
type: journal_article
user_id: '16199'
volume: 4
year: '2022'
...
---
_id: '30921'
abstract:
- lang: eng
text: Quantum walks function as essential means to implement quantum simulators,
allowing one to study complex and often directly inaccessible quantum processes
in controllable systems. In this contribution, the notion of a driven Gaussian
quantum walk is introduced. In contrast to typically considered quantum walks
in optical settings, we describe the operation of the walk in terms of a nonlinear
map rather than a unitary operation, e.g., by replacing a beam-splitter-type coin
with a two-mode squeezer, being a process that is controlled and driven by a pump
field. This opens previously unattainable possibilities for quantum walks that
include nonlinear elements as core components of their operation, vastly extending
their range of applications. A full framework for driven Gaussian quantum walks
is developed, including methods to dynamically characterize nonlinear, quantum,
and quantum-nonlinear effects. Moreover, driven Gaussian quantum walks are compared
with their classically interfering and linear counterparts, which are based on
classical coherence of light rather than quantum superpositions. In particular,
the generation and boost of highly multimode entanglement, squeezing, and other
quantum effects are studied over the duration of the nonlinear walk. Importantly,
we prove the quantumness of the evolution itself, regardless of the input state.
A scheme for an experimental realization is proposed. Furthermore, nonlinear properties
of driven Gaussian quantum walks are explored, such as amplification that leads
to an ever increasing number of correlated quantum particles, constituting a source
of new walkers during the walk. Therefore, a concept for quantum walks is proposed
that leads to—and even produces—directly accessible quantum phenomena, and that
renders the quantum simulation of nonlinear processes possible.
article_number: '042210'
article_type: original
author:
- first_name: Philip
full_name: Held, Philip
id: '68236'
last_name: Held
- first_name: Melanie
full_name: Engelkemeier, Melanie
last_name: Engelkemeier
- first_name: Syamsundar
full_name: De, Syamsundar
last_name: De
- first_name: Sonja
full_name: Barkhofen, Sonja
id: '48188'
last_name: Barkhofen
- first_name: Jan
full_name: Sperling, Jan
id: '75127'
last_name: Sperling
orcid: 0000-0002-5844-3205
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Held P, Engelkemeier M, De S, Barkhofen S, Sperling J, Silberhorn C. Driven
Gaussian quantum walks. Physical Review A. 2022;105(4). doi:10.1103/physreva.105.042210
apa: Held, P., Engelkemeier, M., De, S., Barkhofen, S., Sperling, J., & Silberhorn,
C. (2022). Driven Gaussian quantum walks. Physical Review A, 105(4),
Article 042210. https://doi.org/10.1103/physreva.105.042210
bibtex: '@article{Held_Engelkemeier_De_Barkhofen_Sperling_Silberhorn_2022, title={Driven
Gaussian quantum walks}, volume={105}, DOI={10.1103/physreva.105.042210},
number={4042210}, journal={Physical Review A}, publisher={American Physical Society
(APS)}, author={Held, Philip and Engelkemeier, Melanie and De, Syamsundar and
Barkhofen, Sonja and Sperling, Jan and Silberhorn, Christine}, year={2022} }'
chicago: Held, Philip, Melanie Engelkemeier, Syamsundar De, Sonja Barkhofen, Jan
Sperling, and Christine Silberhorn. “Driven Gaussian Quantum Walks.” Physical
Review A 105, no. 4 (2022). https://doi.org/10.1103/physreva.105.042210.
ieee: 'P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, and C. Silberhorn,
“Driven Gaussian quantum walks,” Physical Review A, vol. 105, no. 4, Art.
no. 042210, 2022, doi: 10.1103/physreva.105.042210.'
mla: Held, Philip, et al. “Driven Gaussian Quantum Walks.” Physical Review A,
vol. 105, no. 4, 042210, American Physical Society (APS), 2022, doi:10.1103/physreva.105.042210.
short: P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, C. Silberhorn,
Physical Review A 105 (2022).
date_created: 2022-04-20T06:38:07Z
date_updated: 2026-01-09T09:50:22Z
department:
- _id: '623'
- _id: '15'
- _id: '170'
- _id: '706'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1103/physreva.105.042210
intvolume: ' 105'
issue: '4'
language:
- iso: eng
main_file_link:
- url: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.105.042210
project:
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '53'
name: 'TRR 142: TRR 142'
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Driven Gaussian quantum walks
type: journal_article
user_id: '68236'
volume: 105
year: '2022'
...
---
_id: '25605'
abstract:
- lang: eng
text: The nonlinear process of second harmonic generation (SHG) in monolayer (1L)
transition metal dichalcogenides (TMD), like WS2, strongly depends on the polarization
state of the excitation light. By combination of plasmonic nanostructures with
1L-WS2 by transferring it onto a plasmonic nanoantenna array, a hybrid metasurface
is realized impacting the polarization dependency of its SHG. Here, we investigate
how plasmonic dipole resonances affect the process of SHG in plasmonic–TMD hybrid
metasurfaces by nonlinear spectroscopy. We show that the polarization dependency
is affected by the lattice structure of plasmonic nanoantenna arrays as well as
by the relative orientation between the 1L-WS2 and the individual plasmonic nanoantennas.
In addition, such hybrid metasurfaces show SHG in polarization states, where SHG
is usually forbidden for either 1L-WS2 or plasmonic nanoantennas. By comparing
the SHG in these channels with the SHG generated by the hybrid metasurface components,
we detect an enhancement of the SHG signal by a factor of more than 40. Meanwhile,
an attenuation of the SHG signal in usually allowed polarization states is observed.
Our study provides valuable insight into hybrid systems where symmetries strongly
affect the SHG and enable tailored SHG in 1L-WS2 for future applications.
article_type: original
author:
- first_name: Florian
full_name: Spreyer, Florian
last_name: Spreyer
- first_name: Claudia
full_name: Ruppert, Claudia
last_name: Ruppert
- first_name: Philip
full_name: Georgi, Philip
last_name: Georgi
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: Spreyer F, Ruppert C, Georgi P, Zentgraf T. Influence of Plasmon Resonances
and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.
ACS Nano. 2021;15(10):16719-16728. doi:10.1021/acsnano.1c06693
apa: Spreyer, F., Ruppert, C., Georgi, P., & Zentgraf, T. (2021). Influence
of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic
Hybrid Metasurfaces. ACS Nano, 15(10), 16719–16728. https://doi.org/10.1021/acsnano.1c06693
bibtex: '@article{Spreyer_Ruppert_Georgi_Zentgraf_2021, title={Influence of Plasmon
Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic
Hybrid Metasurfaces}, volume={15}, DOI={10.1021/acsnano.1c06693},
number={10}, journal={ACS Nano}, author={Spreyer, Florian and Ruppert, Claudia
and Georgi, Philip and Zentgraf, Thomas}, year={2021}, pages={16719–16728} }'
chicago: 'Spreyer, Florian, Claudia Ruppert, Philip Georgi, and Thomas Zentgraf.
“Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation
in WS2–Plasmonic Hybrid Metasurfaces.” ACS Nano 15, no. 10 (2021): 16719–28.
https://doi.org/10.1021/acsnano.1c06693.'
ieee: 'F. Spreyer, C. Ruppert, P. Georgi, and T. Zentgraf, “Influence of Plasmon
Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic
Hybrid Metasurfaces,” ACS Nano, vol. 15, no. 10, pp. 16719–16728, 2021,
doi: 10.1021/acsnano.1c06693.'
mla: Spreyer, Florian, et al. “Influence of Plasmon Resonances and Symmetry Effects
on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” ACS Nano,
vol. 15, no. 10, 2021, pp. 16719–28, doi:10.1021/acsnano.1c06693.
short: F. Spreyer, C. Ruppert, P. Georgi, T. Zentgraf, ACS Nano 15 (2021) 16719–16728.
date_created: 2021-10-07T07:39:27Z
date_updated: 2022-01-06T06:57:07Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
doi: 10.1021/acsnano.1c06693
funded_apc: '1'
intvolume: ' 15'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://pubs.acs.org/doi/10.1021/acsnano.1c06693
oa: '1'
page: 16719-16728
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '64'
name: TRR 142 - Subproject A7
- _id: '65'
name: TRR 142 - Subproject A8
publication: ACS Nano
publication_identifier:
issn:
- 1936-0851
- 1936-086X
publication_status: published
quality_controlled: '1'
status: public
title: Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation
in WS2–Plasmonic Hybrid Metasurfaces
type: journal_article
user_id: '30525'
volume: 15
year: '2021'
...
---
_id: '23815'
abstract:
- lang: eng
text: In this paper, silicon oxynitride films (SiON) grown by plasma-enhanced chemical
vapor deposition are investigated. As precursor gases silane (SiH4), nitrous oxide
(N2O), nitrogen (N2) and ammonia (NH3) are used with different compositions. We
find that for achieving high nitrogen content adding ammonia to the precursor
mix is most efficient. Moreover, we investigate the balance between adsorption
and desorption processes during film growth by investigating the film growth rate
as a function of the substrate temperature. From these data we are able to determine
an effective activation energy for the film growth, corresponding to the difference
between adsorption and desorption energy. Finally, we have thoroughly investigated
the optical properties of the films using spectroscopic ellipsometry. From these
measurements, we suggest a parametrized model for the refractive index and extinction
coefficient in a wide range of compositions based on a Cauchy- and a Lorentz-fit.
article_number: '138887'
article_type: original
author:
- first_name: R.
full_name: Aschwanden, R.
last_name: Aschwanden
- first_name: R.
full_name: Köthemann, R.
last_name: Köthemann
- first_name: M.
full_name: Albert, M.
last_name: Albert
- first_name: C.
full_name: Golla, C.
last_name: Golla
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
citation:
ama: Aschwanden R, Köthemann R, Albert M, Golla C, Meier C. Optical properties of
silicon oxynitride films grown by plasma-enhanced chemical vapor deposition. Thin
Solid Films. 2021;736. doi:10.1016/j.tsf.2021.138887
apa: Aschwanden, R., Köthemann, R., Albert, M., Golla, C., & Meier, C. (2021).
Optical properties of silicon oxynitride films grown by plasma-enhanced chemical
vapor deposition. Thin Solid Films, 736. https://doi.org/10.1016/j.tsf.2021.138887
bibtex: '@article{Aschwanden_Köthemann_Albert_Golla_Meier_2021, title={Optical properties
of silicon oxynitride films grown by plasma-enhanced chemical vapor deposition},
volume={736}, DOI={10.1016/j.tsf.2021.138887},
number={138887}, journal={Thin Solid Films}, author={Aschwanden, R. and Köthemann,
R. and Albert, M. and Golla, C. and Meier, Cedrik}, year={2021} }'
chicago: Aschwanden, R., R. Köthemann, M. Albert, C. Golla, and Cedrik Meier. “Optical
Properties of Silicon Oxynitride Films Grown by Plasma-Enhanced Chemical Vapor
Deposition.” Thin Solid Films 736 (2021). https://doi.org/10.1016/j.tsf.2021.138887.
ieee: R. Aschwanden, R. Köthemann, M. Albert, C. Golla, and C. Meier, “Optical properties
of silicon oxynitride films grown by plasma-enhanced chemical vapor deposition,”
Thin Solid Films, vol. 736, 2021.
mla: Aschwanden, R., et al. “Optical Properties of Silicon Oxynitride Films Grown
by Plasma-Enhanced Chemical Vapor Deposition.” Thin Solid Films, vol. 736,
138887, 2021, doi:10.1016/j.tsf.2021.138887.
short: R. Aschwanden, R. Köthemann, M. Albert, C. Golla, C. Meier, Thin Solid Films
736 (2021).
date_created: 2021-09-06T15:11:54Z
date_updated: 2022-01-06T06:56:00Z
department:
- _id: '15'
doi: 10.1016/j.tsf.2021.138887
intvolume: ' 736'
language:
- iso: eng
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '66'
name: TRR 142 - Subproject B1
publication: Thin Solid Films
publication_identifier:
issn:
- 0040-6090
publication_status: published
status: public
title: Optical properties of silicon oxynitride films grown by plasma-enhanced chemical
vapor deposition
type: journal_article
user_id: '20798'
volume: 736
year: '2021'
...
---
_id: '20592'
abstract:
- lang: eng
text: GaAs-(111)-nanostructures exhibiting second harmonic generation are new building
blocks in nonlinear optics. Such structures can be fabricated through epitaxial
lift-off using selective etching of Al-containing layers and subsequent transfer
to glass substrates. Herein, the selective etching of (111)B-oriented AlxGa1−xAs
sacrificial layers (10–50 nm thick) with different aluminum concentrations (x
= 0.5–1.0) in 10\% hydrofluoric acid is investigated and compared with standard
(100)-oriented structures. The thinner the sacrificial layer and the lower the
aluminum content, the lower the lateral etch rate. For both orientations, the
lateral etch rates are in the same order of magnitude, but some quantitative differences
exist. Furthermore, the epitaxial lift-off, the transfer, and the nanopatterning
of thin (111)B-oriented GaAs membranes are demonstrated. Atomic force microscopy
and high-resolution X-ray diffraction measurements reveal the high structural
quality of the transferred GaAs-(111) films.
article_type: original
author:
- first_name: Tobias
full_name: Henksmeier, Tobias
last_name: Henksmeier
- first_name: Martin
full_name: Eppinger, Martin
last_name: Eppinger
- first_name: Bernhard
full_name: Reineke, Bernhard
last_name: Reineke
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
citation:
ama: Henksmeier T, Eppinger M, Reineke B, Zentgraf T, Meier C, Reuter D. Selective
Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off. physica
status solidi (a). 2021;218(3):2000408. doi:https://doi.org/10.1002/pssa.202000408
apa: Henksmeier, T., Eppinger, M., Reineke, B., Zentgraf, T., Meier, C., & Reuter,
D. (2021). Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial
Lift-Off. Physica Status Solidi (A), 218(3), 2000408. https://doi.org/10.1002/pssa.202000408
bibtex: '@article{Henksmeier_Eppinger_Reineke_Zentgraf_Meier_Reuter_2021, title={Selective
Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off}, volume={218},
DOI={https://doi.org/10.1002/pssa.202000408},
number={3}, journal={physica status solidi (a)}, author={Henksmeier, Tobias and
Eppinger, Martin and Reineke, Bernhard and Zentgraf, Thomas and Meier, Cedrik
and Reuter, Dirk}, year={2021}, pages={2000408} }'
chicago: 'Henksmeier, Tobias, Martin Eppinger, Bernhard Reineke, Thomas Zentgraf,
Cedrik Meier, and Dirk Reuter. “Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers
for Epitaxial Lift-Off.” Physica Status Solidi (A) 218, no. 3 (2021): 2000408.
https://doi.org/10.1002/pssa.202000408.'
ieee: T. Henksmeier, M. Eppinger, B. Reineke, T. Zentgraf, C. Meier, and D. Reuter,
“Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off,”
physica status solidi (a), vol. 218, no. 3, p. 2000408, 2021.
mla: Henksmeier, Tobias, et al. “Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers
for Epitaxial Lift-Off.” Physica Status Solidi (A), vol. 218, no. 3, 2021,
p. 2000408, doi:https://doi.org/10.1002/pssa.202000408.
short: T. Henksmeier, M. Eppinger, B. Reineke, T. Zentgraf, C. Meier, D. Reuter,
Physica Status Solidi (A) 218 (2021) 2000408.
date_created: 2020-12-02T09:50:10Z
date_updated: 2022-01-06T06:54:30Z
department:
- _id: '230'
- _id: '429'
doi: https://doi.org/10.1002/pssa.202000408
intvolume: ' 218'
issue: '3'
keyword:
- epitaxial lift-off
- GaAs/AlxGa1−xAs heterostructures
- selective etching
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.202000408
oa: '1'
page: '2000408'
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '63'
name: TRR 142 - Subproject A6
- _id: '56'
name: TRR 142 - Project Area C
- _id: '75'
name: TRR 142 - Subproject C5
publication: physica status solidi (a)
publication_status: published
status: public
title: Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off
type: journal_article
user_id: '30525'
volume: 218
year: '2021'
...
---
_id: '20900'
article_number: '126009'
author:
- first_name: M.
full_name: Albert, M.
last_name: Albert
- first_name: C.
full_name: Golla, C.
last_name: Golla
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
citation:
ama: Albert M, Golla C, Meier C. Optical in-situ temperature management for high-quality
ZnO molecular beam epitaxy. Journal of Crystal Growth. 2021;557. doi:10.1016/j.jcrysgro.2020.126009
apa: Albert, M., Golla, C., & Meier, C. (2021). Optical in-situ temperature
management for high-quality ZnO molecular beam epitaxy. Journal of Crystal
Growth, 557. https://doi.org/10.1016/j.jcrysgro.2020.126009
bibtex: '@article{Albert_Golla_Meier_2021, title={Optical in-situ temperature management
for high-quality ZnO molecular beam epitaxy}, volume={557}, DOI={10.1016/j.jcrysgro.2020.126009},
number={126009}, journal={Journal of Crystal Growth}, author={Albert, M. and Golla,
C. and Meier, Cedrik}, year={2021} }'
chicago: Albert, M., C. Golla, and Cedrik Meier. “Optical In-Situ Temperature Management
for High-Quality ZnO Molecular Beam Epitaxy.” Journal of Crystal Growth
557 (2021). https://doi.org/10.1016/j.jcrysgro.2020.126009.
ieee: M. Albert, C. Golla, and C. Meier, “Optical in-situ temperature management
for high-quality ZnO molecular beam epitaxy,” Journal of Crystal Growth,
vol. 557, 2021.
mla: Albert, M., et al. “Optical In-Situ Temperature Management for High-Quality
ZnO Molecular Beam Epitaxy.” Journal of Crystal Growth, vol. 557, 126009,
2021, doi:10.1016/j.jcrysgro.2020.126009.
short: M. Albert, C. Golla, C. Meier, Journal of Crystal Growth 557 (2021).
date_created: 2021-01-12T13:52:31Z
date_updated: 2022-01-06T06:54:41Z
department:
- _id: '15'
- _id: '230'
- _id: '429'
doi: 10.1016/j.jcrysgro.2020.126009
intvolume: ' 557'
language:
- iso: eng
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '66'
name: TRR 142 - Subproject B1
publication: Journal of Crystal Growth
publication_identifier:
issn:
- 0022-0248
publication_status: published
status: public
title: Optical in-situ temperature management for high-quality ZnO molecular beam
epitaxy
type: journal_article
user_id: '20798'
volume: 557
year: '2021'
...
---
_id: '22450'
abstract:
- lang: eng
text: We realize and investigate a nonlinear metasurface taking advantage of intersubband
transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing
to huge band offsets, the structures offer resonant transitions in the telecom
window around 1.55 µm. These heterostructures are functionalized with an array
of plasmonic antennas featuring cross-polarized resonances at these near-infrared
wavelengths and their second harmonic. This kind of nonlinear metasurface allows
for substantial second-harmonic generation at normal incidence which is completely
absent for an antenna array without the multi-quantum well structure underneath.
While the second harmonic is originally radiated only into the plane of the quantum
wells, a proper geometrical arrangement of the plasmonic elements permits the
redirection of the second-harmonic light to free-space radiation, which is emitted
perpendicular to the surface.
article_number: '2134'
article_type: original
author:
- first_name: Jan
full_name: Mundry, Jan
last_name: Mundry
- first_name: Florian
full_name: Spreyer, Florian
last_name: Spreyer
- first_name: Valentin
full_name: Jmerik, Valentin
last_name: Jmerik
- first_name: Sergey
full_name: Ivanov, Sergey
last_name: Ivanov
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Markus
full_name: Betz, Markus
last_name: Betz
citation:
ama: Mundry J, Spreyer F, Jmerik V, Ivanov S, Zentgraf T, Betz M. Nonlinear metasurface
combining telecom-range intersubband transitions in GaN/AlN quantum wells with
resonant plasmonic antenna arrays. Optical Materials Express. 2021;11(7).
doi:10.1364/ome.426236
apa: Mundry, J., Spreyer, F., Jmerik, V., Ivanov, S., Zentgraf, T., & Betz,
M. (2021). Nonlinear metasurface combining telecom-range intersubband transitions
in GaN/AlN quantum wells with resonant plasmonic antenna arrays. Optical Materials
Express, 11(7). https://doi.org/10.1364/ome.426236
bibtex: '@article{Mundry_Spreyer_Jmerik_Ivanov_Zentgraf_Betz_2021, title={Nonlinear
metasurface combining telecom-range intersubband transitions in GaN/AlN quantum
wells with resonant plasmonic antenna arrays}, volume={11}, DOI={10.1364/ome.426236},
number={72134}, journal={Optical Materials Express}, publisher={OSA}, author={Mundry,
Jan and Spreyer, Florian and Jmerik, Valentin and Ivanov, Sergey and Zentgraf,
Thomas and Betz, Markus}, year={2021} }'
chicago: Mundry, Jan, Florian Spreyer, Valentin Jmerik, Sergey Ivanov, Thomas Zentgraf,
and Markus Betz. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions
in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” Optical Materials
Express 11, no. 7 (2021). https://doi.org/10.1364/ome.426236.
ieee: J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, and M. Betz, “Nonlinear
metasurface combining telecom-range intersubband transitions in GaN/AlN quantum
wells with resonant plasmonic antenna arrays,” Optical Materials Express,
vol. 11, no. 7, 2021.
mla: Mundry, Jan, et al. “Nonlinear Metasurface Combining Telecom-Range Intersubband
Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.”
Optical Materials Express, vol. 11, no. 7, 2134, OSA, 2021, doi:10.1364/ome.426236.
short: J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, M. Betz, Optical
Materials Express 11 (2021).
date_created: 2021-06-16T05:52:21Z
date_updated: 2022-01-06T06:55:33Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '429'
doi: 10.1364/ome.426236
intvolume: ' 11'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-11-7-2134&id=452008
oa: '1'
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '65'
name: TRR 142 - Subproject A8
publication: Optical Materials Express
publication_identifier:
issn:
- 2159-3930
publication_status: published
publisher: OSA
quality_controlled: '1'
status: public
title: Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN
quantum wells with resonant plasmonic antenna arrays
type: journal_article
user_id: '30525'
volume: 11
year: '2021'
...