---
_id: '63827'
abstract:
- lang: eng
text: Light-emitting diodes (LEDs) are becoming increasingly important across various
sectors of the lighting industry and are being used more frequently. In the field
of symbolic projection, research is increasingly focusing on implementing light
modulation using energy-efficient, incoherent LEDs rather than lasers. Since light
modulation in micro- and nano-optics is typically achieved through phase modulation,
Finite-Difference Time-Domain (FDTD) simulations are employed for analysis. The
objective of this article is to investigate different approaches for approximating
incoherent monochromatic light sources within FDTD simulations. To this end, two
approaches based on dipole sources are considered, as well as a method involving
plane waves with modulated wavefronts based on Cosine–Fourier functions and a
method based on the superposition of Gaussian beams. These methods are evaluated
in terms of their accuracy using a two-dimensional double-slit configuration and
are compared against a fully incoherent analytical reference.
article_number: '128'
article_type: original
author:
- first_name: Dominik
full_name: Metzner, Dominik
last_name: Metzner
- first_name: Jens
full_name: Potthoff, Jens
last_name: Potthoff
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Metzner D, Potthoff J, Zentgraf T, Förstner J. Approximating Incoherent Monochromatic
Light Sources in FDTD Simulations. Photonics. 2026;13(2). doi:10.3390/photonics13020128
apa: Metzner, D., Potthoff, J., Zentgraf, T., & Förstner, J. (2026). Approximating
Incoherent Monochromatic Light Sources in FDTD Simulations. Photonics,
13(2), Article 128. https://doi.org/10.3390/photonics13020128
bibtex: '@article{Metzner_Potthoff_Zentgraf_Förstner_2026, title={Approximating
Incoherent Monochromatic Light Sources in FDTD Simulations}, volume={13}, DOI={10.3390/photonics13020128},
number={2128}, journal={Photonics}, publisher={MDPI AG}, author={Metzner, Dominik
and Potthoff, Jens and Zentgraf, Thomas and Förstner, Jens}, year={2026} }'
chicago: Metzner, Dominik, Jens Potthoff, Thomas Zentgraf, and Jens Förstner. “Approximating
Incoherent Monochromatic Light Sources in FDTD Simulations.” Photonics
13, no. 2 (2026). https://doi.org/10.3390/photonics13020128.
ieee: 'D. Metzner, J. Potthoff, T. Zentgraf, and J. Förstner, “Approximating Incoherent
Monochromatic Light Sources in FDTD Simulations,” Photonics, vol. 13, no.
2, Art. no. 128, 2026, doi: 10.3390/photonics13020128.'
mla: Metzner, Dominik, et al. “Approximating Incoherent Monochromatic Light Sources
in FDTD Simulations.” Photonics, vol. 13, no. 2, 128, MDPI AG, 2026, doi:10.3390/photonics13020128.
short: D. Metzner, J. Potthoff, T. Zentgraf, J. Förstner, Photonics 13 (2026).
date_created: 2026-02-02T07:18:03Z
date_updated: 2026-02-02T21:38:34Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
- _id: '61'
doi: 10.3390/photonics13020128
intvolume: ' 13'
issue: '2'
keyword:
- tet_topic_opticalantenna
- tet_topic_numerics
- tet_topic_meta
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2304-6732/13/2/128
oa: '1'
publication: Photonics
publication_identifier:
issn:
- 2304-6732
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Approximating Incoherent Monochromatic Light Sources in FDTD Simulations
type: journal_article
user_id: '158'
volume: 13
year: '2026'
...
---
_id: '64873'
abstract:
- lang: eng
text: Continuous flow catalysis utilizing gel-bound organocatalysts within a microfluidic
reactor represents a compelling strategy in the realm of organic synthesis. In
this study, a quinuclidine-based catalytic monomer (QMA) was synthesized to create
polymer gel dots through the process of photopolymerization that serve as a support
for the catalyst. The resulting gel-bound organocatalysts were assembled within
a continuous microfluidic reactor to facilitate the Baylis–Hillman reaction between
various aldehydes and acrylonitrile at a temperature of 50 °C. The conversion
of the product was assessed using 1H NMR spectroscopy as an offline analytical
method over a duration of 8 h. The findings indicated that highly reactive aldehydes
achieved conversion rates exceeding 90%, in contrast to their less reactive counterparts.
Furthermore, these results were juxtaposed with previously published data derived
from alternative synthetic methodologies, revealing that the continuous microfluidic
reactions employing integrated organocatalysts within polymer networks exhibited
significantly higher conversions with reduced reaction times (8 h) at the same
temperature (50 °C). Additionally, the influence of different geometries (round,
triangular, and square) of the gel dots on catalytic activity was investigated,
with round and square gel dots demonstrating slightly superior performance compared
with triangular gel dots, attributed to their increased surface area. Moreover,
an extended reaction period of 6 days was conducted using 4-bromobenzaldehyde
and acrylonitrile, resulting in a conversion rate exceeding 70%, which remained
stable for 5 days before experiencing a slight decline due to product accumulation
on the gel dots.
article_number: '14448'
article_type: original
author:
- first_name: Naresh
full_name: Killi, Naresh
last_name: Killi
- first_name: Amit
full_name: Kumar, Amit
last_name: Kumar
- first_name: Leena
full_name: Nebhani, Leena
last_name: Nebhani
- first_name: Franziska
full_name: Obst, Franziska
last_name: Obst
- first_name: Andreas
full_name: Richter, Andreas
last_name: Richter
- first_name: Bernhard
full_name: Reineke Matsudo, Bernhard
last_name: Reineke Matsudo
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Dirk
full_name: Kuckling, Dirk
id: '287'
last_name: Kuckling
citation:
ama: Killi N, Kumar A, Nebhani L, et al. Integrating an Organocatalyst into a Polymeric
Gel Framework for the Continuous Microflow Baylis–Hillman Reaction. ACS Omega.
2026;11(9). doi:10.1021/acsomega.5c09476
apa: Killi, N., Kumar, A., Nebhani, L., Obst, F., Richter, A., Reineke Matsudo,
B., Zentgraf, T., & Kuckling, D. (2026). Integrating an Organocatalyst into
a Polymeric Gel Framework for the Continuous Microflow Baylis–Hillman Reaction.
ACS Omega, 11(9), Article 14448. https://doi.org/10.1021/acsomega.5c09476
bibtex: '@article{Killi_Kumar_Nebhani_Obst_Richter_Reineke Matsudo_Zentgraf_Kuckling_2026,
title={Integrating an Organocatalyst into a Polymeric Gel Framework for the Continuous
Microflow Baylis–Hillman Reaction}, volume={11}, DOI={10.1021/acsomega.5c09476},
number={914448}, journal={ACS Omega}, publisher={American Chemical Society (ACS)},
author={Killi, Naresh and Kumar, Amit and Nebhani, Leena and Obst, Franziska and
Richter, Andreas and Reineke Matsudo, Bernhard and Zentgraf, Thomas and Kuckling,
Dirk}, year={2026} }'
chicago: Killi, Naresh, Amit Kumar, Leena Nebhani, Franziska Obst, Andreas Richter,
Bernhard Reineke Matsudo, Thomas Zentgraf, and Dirk Kuckling. “Integrating an
Organocatalyst into a Polymeric Gel Framework for the Continuous Microflow Baylis–Hillman
Reaction.” ACS Omega 11, no. 9 (2026). https://doi.org/10.1021/acsomega.5c09476.
ieee: 'N. Killi et al., “Integrating an Organocatalyst into a Polymeric Gel
Framework for the Continuous Microflow Baylis–Hillman Reaction,” ACS Omega,
vol. 11, no. 9, Art. no. 14448, 2026, doi: 10.1021/acsomega.5c09476.'
mla: Killi, Naresh, et al. “Integrating an Organocatalyst into a Polymeric Gel Framework
for the Continuous Microflow Baylis–Hillman Reaction.” ACS Omega, vol.
11, no. 9, 14448, American Chemical Society (ACS), 2026, doi:10.1021/acsomega.5c09476.
short: N. Killi, A. Kumar, L. Nebhani, F. Obst, A. Richter, B. Reineke Matsudo,
T. Zentgraf, D. Kuckling, ACS Omega 11 (2026).
date_created: 2026-03-10T08:23:43Z
date_updated: 2026-03-10T08:27:15Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
- _id: '2'
- _id: '311'
doi: 10.1021/acsomega.5c09476
intvolume: ' 11'
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://pubs.acs.org/doi/abs/10.1021/acsomega.5c09476
oa: '1'
publication: ACS Omega
publication_identifier:
issn:
- 2470-1343
- 2470-1343
publication_status: published
publisher: American Chemical Society (ACS)
quality_controlled: '1'
status: public
title: Integrating an Organocatalyst into a Polymeric Gel Framework for the Continuous
Microflow Baylis–Hillman Reaction
type: journal_article
user_id: '30525'
volume: 11
year: '2026'
...
---
_id: '61523'
abstract:
- lang: eng
text: AbstractMetasurface holography offers a powerful approach
for manipulating wavefronts at the nano and micro scale. Extensive research has
been conducted to enhance the multiplexing capacity for diverse wavefronts. However,
the independence of multiplexed channels is fundamentally restricted in techniques
using single‐layer metasurfaces, resulting in unavoidable crosstalk and the need
for post‐filtering of the output wavefronts. Here, a universal wavefront multiplexing
concept is presented based on non‐injective transformation. By employing joint
optimization on two metasurfaces, different channels can be independently designed
without any constraints on the output wavefronts. To validate this approach, ultra‐compact
orbital angular momentum (OAM) sorters are designed. In these experiments, the
output beams from different channels can be independently mapped to 2D positions
with high fineness. In another application of wavefront‐multiplexed holography,
10‐channel multiplexing is experimentally achieved with minimal crosstalk and
without the need for post‐processing. These results demonstrate the independence
between channels enabled by the non‐injective transformation in the method. The
precise wavefront control and high multiplexing capacity underscore its potential
for scalable wavefront manipulation devices.
article_number: e11823
article_type: original
author:
- first_name: Xiao
full_name: Jin, Xiao
last_name: Jin
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: Jin X, Zentgraf T. Independent Wavefront Multiplexing with Metasurfaces via
Non‐Injective Transformation. Advanced Materials. 2026;38. doi:10.1002/adma.202511823
apa: Jin, X., & Zentgraf, T. (2026). Independent Wavefront Multiplexing with
Metasurfaces via Non‐Injective Transformation. Advanced Materials, 38,
Article e11823. https://doi.org/10.1002/adma.202511823
bibtex: '@article{Jin_Zentgraf_2026, title={Independent Wavefront Multiplexing with
Metasurfaces via Non‐Injective Transformation}, volume={38}, DOI={10.1002/adma.202511823},
number={e11823}, journal={Advanced Materials}, publisher={Wiley}, author={Jin,
Xiao and Zentgraf, Thomas}, year={2026} }'
chicago: Jin, Xiao, and Thomas Zentgraf. “Independent Wavefront Multiplexing with
Metasurfaces via Non‐Injective Transformation.” Advanced Materials 38 (2026).
https://doi.org/10.1002/adma.202511823.
ieee: 'X. Jin and T. Zentgraf, “Independent Wavefront Multiplexing with Metasurfaces
via Non‐Injective Transformation,” Advanced Materials, vol. 38, Art. no.
e11823, 2026, doi: 10.1002/adma.202511823.'
mla: Jin, Xiao, and Thomas Zentgraf. “Independent Wavefront Multiplexing with Metasurfaces
via Non‐Injective Transformation.” Advanced Materials, vol. 38, e11823,
Wiley, 2026, doi:10.1002/adma.202511823.
short: X. Jin, T. Zentgraf, Advanced Materials 38 (2026).
date_created: 2025-10-06T05:42:21Z
date_updated: 2026-03-10T08:32:37Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1002/adma.202511823
intvolume: ' 38'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202511823
oa: '1'
project:
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '54'
name: TRR 142 - Project Area A
- _id: '55'
name: TRR 142 - Project Area B
- _id: '65'
name: 'TRR 142; TP A08: Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van
der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten'
- _id: '170'
name: 'TRR 142; TP B09: Effiziente Erzeugung mit maßgeschneiderter optischer Phaselage
der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen'
publication: Advanced Materials
publication_identifier:
issn:
- 0935-9648
- 1521-4095
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Independent Wavefront Multiplexing with Metasurfaces via Non‐Injective Transformation
type: journal_article
user_id: '30525'
volume: 38
year: '2026'
...
---
_id: '63531'
author:
- first_name: Siddharth
full_name: Doshi, Siddharth
last_name: Doshi
- first_name: Nicholas Alexander
full_name: Güsken, Nicholas Alexander
id: '112030'
last_name: Güsken
orcid: 0000-0002-4816-0666
- first_name: Gerwin
full_name: Dijk, Gerwin
last_name: Dijk
- first_name: Johan
full_name: Carlström, Johan
last_name: Carlström
- first_name: Jennifer E.
full_name: Ortiz-Cárdenas, Jennifer E.
last_name: Ortiz-Cárdenas
- first_name: Peter
full_name: Suzuki, Peter
last_name: Suzuki
- first_name: Bohan
full_name: Li, Bohan
last_name: Li
- first_name: Polly M.
full_name: Fordyce, Polly M.
last_name: Fordyce
- first_name: Alberto
full_name: Salleo, Alberto
last_name: Salleo
- first_name: Nicholas A.
full_name: Melosh, Nicholas A.
last_name: Melosh
- first_name: Mark L.
full_name: Brongersma, Mark L.
last_name: Brongersma
citation:
ama: Doshi S, Güsken NA, Dijk G, et al. Soft photonic skins with dynamic texture
and colour control. Nature. 2026;649(8096):345-352. doi:10.1038/s41586-025-09948-2
apa: Doshi, S., Güsken, N. A., Dijk, G., Carlström, J., Ortiz-Cárdenas, J. E., Suzuki,
P., Li, B., Fordyce, P. M., Salleo, A., Melosh, N. A., & Brongersma, M. L.
(2026). Soft photonic skins with dynamic texture and colour control. Nature,
649(8096), 345–352. https://doi.org/10.1038/s41586-025-09948-2
bibtex: '@article{Doshi_Güsken_Dijk_Carlström_Ortiz-Cárdenas_Suzuki_Li_Fordyce_Salleo_Melosh_et
al._2026, title={Soft photonic skins with dynamic texture and colour control},
volume={649}, DOI={10.1038/s41586-025-09948-2},
number={8096}, journal={Nature}, publisher={Springer Science and Business Media
LLC}, author={Doshi, Siddharth and Güsken, Nicholas Alexander and Dijk, Gerwin
and Carlström, Johan and Ortiz-Cárdenas, Jennifer E. and Suzuki, Peter and Li,
Bohan and Fordyce, Polly M. and Salleo, Alberto and Melosh, Nicholas A. and et
al.}, year={2026}, pages={345–352} }'
chicago: 'Doshi, Siddharth, Nicholas Alexander Güsken, Gerwin Dijk, Johan Carlström,
Jennifer E. Ortiz-Cárdenas, Peter Suzuki, Bohan Li, et al. “Soft Photonic Skins
with Dynamic Texture and Colour Control.” Nature 649, no. 8096 (2026):
345–52. https://doi.org/10.1038/s41586-025-09948-2.'
ieee: 'S. Doshi et al., “Soft photonic skins with dynamic texture and colour
control,” Nature, vol. 649, no. 8096, pp. 345–352, 2026, doi: 10.1038/s41586-025-09948-2.'
mla: Doshi, Siddharth, et al. “Soft Photonic Skins with Dynamic Texture and Colour
Control.” Nature, vol. 649, no. 8096, Springer Science and Business Media
LLC, 2026, pp. 345–52, doi:10.1038/s41586-025-09948-2.
short: S. Doshi, N.A. Güsken, G. Dijk, J. Carlström, J.E. Ortiz-Cárdenas, P. Suzuki,
B. Li, P.M. Fordyce, A. Salleo, N.A. Melosh, M.L. Brongersma, Nature 649 (2026)
345–352.
date_created: 2026-01-08T12:55:30Z
date_updated: 2026-01-08T13:22:16Z
department:
- _id: '623'
- _id: '15'
- _id: '230'
doi: 10.1038/s41586-025-09948-2
intvolume: ' 649'
issue: '8096'
language:
- iso: eng
page: 345-352
publication: Nature
publication_identifier:
issn:
- 0028-0836
- 1476-4687
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Soft photonic skins with dynamic texture and colour control
type: journal_article
user_id: '112030'
volume: 649
year: '2026'
...
---
_id: '64877'
author:
- first_name: Behnood
full_name: Taheri, Behnood
last_name: Taheri
- first_name: Denis
full_name: Kopylov, Denis
id: '98502'
last_name: Kopylov
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- 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: Taheri B, Kopylov D, Hammer M, Meier T, Förstner J, Sharapova PR. Gain-induced
spectral non-degeneracy in type-II parametric down-conversion. arXiv. Published
online 2026. doi:10.48550/ARXIV.2603.01656
apa: Taheri, B., Kopylov, D., Hammer, M., Meier, T., Förstner, J., & Sharapova,
P. R. (2026). Gain-induced spectral non-degeneracy in type-II parametric down-conversion.
ArXiv. https://doi.org/10.48550/ARXIV.2603.01656
bibtex: '@article{Taheri_Kopylov_Hammer_Meier_Förstner_Sharapova_2026, title={Gain-induced
spectral non-degeneracy in type-II parametric down-conversion}, DOI={10.48550/ARXIV.2603.01656},
journal={arXiv}, author={Taheri, Behnood and Kopylov, Denis and Hammer, Manfred
and Meier, Torsten and Förstner, Jens and Sharapova, Polina R.}, year={2026} }'
chicago: Taheri, Behnood, Denis Kopylov, Manfred Hammer, Torsten Meier, Jens Förstner,
and Polina R. Sharapova. “Gain-Induced Spectral Non-Degeneracy in Type-II Parametric
down-Conversion.” ArXiv, 2026. https://doi.org/10.48550/ARXIV.2603.01656.
ieee: 'B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, and P. R. Sharapova,
“Gain-induced spectral non-degeneracy in type-II parametric down-conversion,”
arXiv, 2026, doi: 10.48550/ARXIV.2603.01656.'
mla: Taheri, Behnood, et al. “Gain-Induced Spectral Non-Degeneracy in Type-II Parametric
down-Conversion.” ArXiv, 2026, doi:10.48550/ARXIV.2603.01656.
short: B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, P.R. Sharapova,
ArXiv (2026).
date_created: 2026-03-10T15:37:22Z
date_updated: 2026-03-10T15:41:18Z
department:
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '293'
- _id: '35'
- _id: '34'
- _id: '61'
- _id: '230'
- _id: '623'
- _id: '429'
doi: 10.48550/ARXIV.2603.01656
language:
- iso: eng
project:
- _id: '168'
name: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat
(B07*)
- _id: '56'
name: TRR 142 - Project Area C
- _id: '174'
name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen
Systemen: Eine theoretische Analyse'
publication: arXiv
status: public
title: Gain-induced spectral non-degeneracy in type-II parametric down-conversion
type: journal_article
user_id: '16199'
year: '2026'
...
---
_id: '64978'
abstract:
- lang: eng
text: "The degrees of freedom (DoFs) of light determine the maximum number of independent
signal\r\nchannels an optical system can support. However, the polarization DoF
is intrinsically limited to two by\r\northogonality, which causes unavoidable
crosstalk and often forces position multiplexing, where different\r\nchannels
are assigned to distinct spatial locations to suppress crosstalk. This research
introduces a multilayer\r\nsynchronous polarization projection method that fundamentally
increases the DoF for polarization\r\nmultiplexing. The DoF equals twice the number
of projection layers. We experimentally demonstrate six-\r\nchannel polarization
multiplexing holography without position multiplexing. The six-channel multiplexing\r\nresults
indicate that our approach exceeds the conventional polarization multiplexing
method, yielding an\r\naverage 3.79 dB improvement in extinction ratio across
the six channels. Compared with the theoretical\r\nlimit of traditional polarization
multiplexing, our method reduces crosstalk by an average of 6.52 dB across\r\nall
channels in a seven-channel design. The polarization projection method breaks
the DoF limitation\r\nof polarization multiplexing, opening a path toward high-dimensional
photonic information encoding for\r\ncommunication, encryption, and imaging."
article_number: '26010'
article_type: original
author:
- first_name: Xiao
full_name: Jin, Xiao
last_name: Jin
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: Jin X, Zentgraf T. Increasing the design degree of freedom for polarization
through multilayer synchronous polarization projection. Advanced Photonics.
2026;8(02). doi:10.1117/1.ap.8.2.026010
apa: Jin, X., & Zentgraf, T. (2026). Increasing the design degree of freedom
for polarization through multilayer synchronous polarization projection. Advanced
Photonics, 8(02), Article 26010. https://doi.org/10.1117/1.ap.8.2.026010
bibtex: '@article{Jin_Zentgraf_2026, title={Increasing the design degree of freedom
for polarization through multilayer synchronous polarization projection}, volume={8},
DOI={10.1117/1.ap.8.2.026010},
number={0226010}, journal={Advanced Photonics}, publisher={SPIE-Intl Soc Optical
Eng}, author={Jin, Xiao and Zentgraf, Thomas}, year={2026} }'
chicago: Jin, Xiao, and Thomas Zentgraf. “Increasing the Design Degree of Freedom
for Polarization through Multilayer Synchronous Polarization Projection.” Advanced
Photonics 8, no. 02 (2026). https://doi.org/10.1117/1.ap.8.2.026010.
ieee: 'X. Jin and T. Zentgraf, “Increasing the design degree of freedom for polarization
through multilayer synchronous polarization projection,” Advanced Photonics,
vol. 8, no. 02, Art. no. 26010, 2026, doi: 10.1117/1.ap.8.2.026010.'
mla: Jin, Xiao, and Thomas Zentgraf. “Increasing the Design Degree of Freedom for
Polarization through Multilayer Synchronous Polarization Projection.” Advanced
Photonics, vol. 8, no. 02, 26010, SPIE-Intl Soc Optical Eng, 2026, doi:10.1117/1.ap.8.2.026010.
short: X. Jin, T. Zentgraf, Advanced Photonics 8 (2026).
date_created: 2026-03-16T07:17:52Z
date_updated: 2026-03-16T07:20:07Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1117/1.ap.8.2.026010
intvolume: ' 8'
issue: '02'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.researching.cn/Articles/OJafd1e3b9e643c6be
oa: '1'
publication: Advanced Photonics
publication_identifier:
issn:
- 2577-5421
publication_status: published
publisher: SPIE-Intl Soc Optical Eng
quality_controlled: '1'
status: public
title: Increasing the design degree of freedom for polarization through multilayer
synchronous polarization projection
type: journal_article
user_id: '30525'
volume: 8
year: '2026'
...
---
_id: '65357'
author:
- first_name: Minjun
full_name: Kim, Minjun
last_name: Kim
- first_name: Vasanthan
full_name: Devaraj, Vasanthan
last_name: Devaraj
- first_name: Hyeon-Seok
full_name: Seo, Hyeon-Seok
last_name: Seo
- first_name: Seongjae
full_name: Eom, Seongjae
last_name: Eom
- first_name: Jeong-Su
full_name: Lee, Jeong-Su
last_name: Lee
- first_name: Donghan
full_name: Lee, Donghan
last_name: Lee
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Jong-Min
full_name: Lee, Jong-Min
last_name: Lee
- first_name: Min Yong
full_name: Jeon, Min Yong
last_name: Jeon
citation:
ama: 'Kim M, Devaraj V, Seo H-S, et al. Fabrication of uniform, high-field-enhanced
plasmonic satellite clusters using multidewetting. In: Razeghi M, Khodaparast
GA, Vitiello MS, eds. Quantum Sensing and Nano Electronics and Photonics XXII.
SPIE; 2026. doi:10.1117/12.3095416'
apa: Kim, M., Devaraj, V., Seo, H.-S., Eom, S., Lee, J.-S., Lee, D., Zentgraf, T.,
Lee, J.-M., & Jeon, M. Y. (2026). Fabrication of uniform, high-field-enhanced
plasmonic satellite clusters using multidewetting. In M. Razeghi, G. A. Khodaparast,
& M. S. Vitiello (Eds.), Quantum Sensing and Nano Electronics and Photonics
XXII. SPIE. https://doi.org/10.1117/12.3095416
bibtex: '@inproceedings{Kim_Devaraj_Seo_Eom_Lee_Lee_Zentgraf_Lee_Jeon_2026, title={Fabrication
of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting},
DOI={10.1117/12.3095416}, booktitle={Quantum
Sensing and Nano Electronics and Photonics XXII}, publisher={SPIE}, author={Kim,
Minjun and Devaraj, Vasanthan and Seo, Hyeon-Seok and Eom, Seongjae and Lee, Jeong-Su
and Lee, Donghan and Zentgraf, Thomas and Lee, Jong-Min and Jeon, Min Yong}, editor={Razeghi,
Manijeh and Khodaparast, Giti A. and Vitiello, Miriam S.}, year={2026} }'
chicago: Kim, Minjun, Vasanthan Devaraj, Hyeon-Seok Seo, Seongjae Eom, Jeong-Su
Lee, Donghan Lee, Thomas Zentgraf, Jong-Min Lee, and Min Yong Jeon. “Fabrication
of Uniform, High-Field-Enhanced Plasmonic Satellite Clusters Using Multidewetting.”
In Quantum Sensing and Nano Electronics and Photonics XXII, edited by Manijeh
Razeghi, Giti A. Khodaparast, and Miriam S. Vitiello. SPIE, 2026. https://doi.org/10.1117/12.3095416.
ieee: 'M. Kim et al., “Fabrication of uniform, high-field-enhanced plasmonic
satellite clusters using multidewetting,” in Quantum Sensing and Nano Electronics
and Photonics XXII, 2026, doi: 10.1117/12.3095416.'
mla: Kim, Minjun, et al. “Fabrication of Uniform, High-Field-Enhanced Plasmonic
Satellite Clusters Using Multidewetting.” Quantum Sensing and Nano Electronics
and Photonics XXII, edited by Manijeh Razeghi et al., SPIE, 2026, doi:10.1117/12.3095416.
short: 'M. Kim, V. Devaraj, H.-S. Seo, S. Eom, J.-S. Lee, D. Lee, T. Zentgraf, J.-M.
Lee, M.Y. Jeon, in: M. Razeghi, G.A. Khodaparast, M.S. Vitiello (Eds.), Quantum
Sensing and Nano Electronics and Photonics XXII, SPIE, 2026.'
date_created: 2026-04-07T04:29:28Z
date_updated: 2026-04-07T04:30:07Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1117/12.3095416
editor:
- first_name: Manijeh
full_name: Razeghi, Manijeh
last_name: Razeghi
- first_name: Giti A.
full_name: Khodaparast, Giti A.
last_name: Khodaparast
- first_name: Miriam S.
full_name: Vitiello, Miriam S.
last_name: Vitiello
language:
- iso: eng
publication: Quantum Sensing and Nano Electronics and Photonics XXII
publication_status: published
publisher: SPIE
status: public
title: Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using
multidewetting
type: conference
user_id: '30525'
year: '2026'
...
---
_id: '65460'
abstract:
- lang: eng
text: "Beamsplitters represent fundamental components in both classical and quantum
optical systems, enabling the distribution of light, as well as the generation
of interference, superposition, and entanglement. However, optical networks constructed
from conventional bulk 2 × 2-beamsplitters encounter inherent scalability issues,
as the number of required beamsplitters scales quadratically with the number of
optical modes for a fully connected network. Metasurfaces offer a promising route
to\r\novercome these constraints. By manipulating light at the wavelength scale,
compact optical components with advanced functionalities can be constructed, which
address several modes simultaneously. In this work, we design and experimentally
utilize a metasurface as a multiport beamsplitter. Furthermore, we realized a
multimode interferometer composed of two cascaded metasurfaces. We characterize
the individual and cascaded metasurfaces by using classical light, showing controllable
splitting ratios through tunable phase relations. We then expand the approach
to quantum light, employing single photons to demonstrate second- and third-order
photon correlations as well as single photon interference across multiple spatial
paths. These results establish metasurface-based multiport beamsplitters as a
scalable and reconfigurable platform bridging classical and quantum photonics. "
article_number: acsphotonics.6c00096
article_type: original
author:
- first_name: Rebecca
full_name: Aschwanden, Rebecca
last_name: Aschwanden
- first_name: Nicolás
full_name: Claro-Rodríguez, Nicolás
last_name: Claro-Rodríguez
- first_name: Ruizhe
full_name: Zhao, Ruizhe
last_name: Zhao
- first_name: Patricia Anna Maria
full_name: Kallert, Patricia Anna Maria
id: '72332'
last_name: Kallert
orcid: 0009-0007-5230-0223
- first_name: Tobias
full_name: Krieger, Tobias
last_name: Krieger
- first_name: Quirin
full_name: Buchinger, Quirin
last_name: Buchinger
- first_name: Saimon F.
full_name: Covre da Silva, Saimon F.
last_name: Covre da Silva
- first_name: Sandra
full_name: Stroj, Sandra
last_name: Stroj
- first_name: Michele
full_name: Rota, Michele
last_name: Rota
- first_name: Sven
full_name: Höfling, Sven
last_name: Höfling
- first_name: Tobias
full_name: Huber-Loyola, Tobias
last_name: Huber-Loyola
- first_name: Armando
full_name: Rastelli, Armando
last_name: Rastelli
- first_name: Rinaldo
full_name: Trotta, Rinaldo
last_name: Trotta
- first_name: Lingling
full_name: Huang, Lingling
last_name: Huang
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: Aschwanden R, Claro-Rodríguez N, Zhao R, et al. Cascaded Metasurface Interferometer
for Multipath Interference with Classical and Quantum Light. ACS Photonics.
Published online 2026. doi:10.1021/acsphotonics.6c00096
apa: Aschwanden, R., Claro-Rodríguez, N., Zhao, R., Kallert, P. A. M., Krieger,
T., Buchinger, Q., Covre da Silva, S. F., Stroj, S., Rota, M., Höfling, S., Huber-Loyola,
T., Rastelli, A., Trotta, R., Huang, L., Bartley, T., Jöns, K., & Zentgraf,
T. (2026). Cascaded Metasurface Interferometer for Multipath Interference with
Classical and Quantum Light. ACS Photonics, Article acsphotonics.6c00096.
https://doi.org/10.1021/acsphotonics.6c00096
bibtex: '@article{Aschwanden_Claro-Rodríguez_Zhao_Kallert_Krieger_Buchinger_Covre
da Silva_Stroj_Rota_Höfling_et al._2026, title={Cascaded Metasurface Interferometer
for Multipath Interference with Classical and Quantum Light}, DOI={10.1021/acsphotonics.6c00096},
number={acsphotonics.6c00096}, journal={ACS Photonics}, publisher={American Chemical
Society (ACS)}, author={Aschwanden, Rebecca and Claro-Rodríguez, Nicolás and Zhao,
Ruizhe and Kallert, Patricia Anna Maria and Krieger, Tobias and Buchinger, Quirin
and Covre da Silva, Saimon F. and Stroj, Sandra and Rota, Michele and Höfling,
Sven and et al.}, year={2026} }'
chicago: Aschwanden, Rebecca, Nicolás Claro-Rodríguez, Ruizhe Zhao, Patricia Anna
Maria Kallert, Tobias Krieger, Quirin Buchinger, Saimon F. Covre da Silva, et
al. “Cascaded Metasurface Interferometer for Multipath Interference with Classical
and Quantum Light.” ACS Photonics, 2026. https://doi.org/10.1021/acsphotonics.6c00096.
ieee: 'R. Aschwanden et al., “Cascaded Metasurface Interferometer for Multipath
Interference with Classical and Quantum Light,” ACS Photonics, Art. no.
acsphotonics.6c00096, 2026, doi: 10.1021/acsphotonics.6c00096.'
mla: Aschwanden, Rebecca, et al. “Cascaded Metasurface Interferometer for Multipath
Interference with Classical and Quantum Light.” ACS Photonics, acsphotonics.6c00096,
American Chemical Society (ACS), 2026, doi:10.1021/acsphotonics.6c00096.
short: R. Aschwanden, N. Claro-Rodríguez, R. Zhao, P.A.M. Kallert, T. Krieger, Q.
Buchinger, S.F. Covre da Silva, S. Stroj, M. Rota, S. Höfling, T. Huber-Loyola,
A. Rastelli, R. Trotta, L. Huang, T. Bartley, K. Jöns, T. Zentgraf, ACS Photonics
(2026).
date_created: 2026-04-20T04:52:59Z
date_updated: 2026-04-20T05:01:00Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1021/acsphotonics.6c00096
external_id:
arxiv:
- '2603.25090'
keyword:
- metasurface
- beamsplitter
- interferometer
- quantum network
- single photons
- nanophotonics
language:
- iso: eng
main_file_link:
- url: https://pubs.acs.org/doi/10.1021/acsphotonics.6c00096
project:
- _id: '54'
name: TRR 142 - Project Area A
- _id: '65'
name: 'TRR 142; TP A08: Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van
der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten'
- _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)
quality_controlled: '1'
status: public
title: Cascaded Metasurface Interferometer for Multipath Interference with Classical
and Quantum Light
type: journal_article
user_id: '30525'
year: '2026'
...
---
_id: '65316'
abstract:
- lang: eng
text: Metasurfaces are powerful tools for manipulating light using small structures
on the nanoscale. In most metasurfaces, near-field couplings are treated as being
unfavorable perturbations. Here, we experimentally investigate a structure consisting
of sinusoidally modulated silicon waveguides where near-field coupling of local
resonances leads to negative coupling, i.e., a negative coupling constant. This
gives rise to wave-vector-dependent eigenstates of elliptical, linear, and circular
polarizations. In particular, fully circular polarization states are not only
present at a single point in momentum space (k-space) but also along a line. This
circular polarization line, as well as a linear polarization line, emanates from
a polarization degeneracy at the Dirac point. We experimentally validate the existence
of these eigenstates and demonstrate the energy-, polarization-, and wave vector
dependence of this metasurface as well as its sensitivity to fabrication tolerances.
By tuning the incident k-vector, certain polarization-energy eigenstates are strongly
reflected, allowing for uses in angle-tunable polarization filters and light sources.
author:
- first_name: Helene
full_name: Wetter, Helene
last_name: Wetter
- first_name: Jan
full_name: Wingenbach, Jan
id: '69187'
last_name: Wingenbach
- first_name: Falk
full_name: Rehberg, Falk
last_name: Rehberg
- first_name: Wenlong
full_name: Gao, Wenlong
last_name: Gao
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: Wetter H, Wingenbach J, Rehberg F, Gao W, Schumacher S, Zentgraf T. Polarization-
and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. ACS
Photonics. 2026;13:2128-2133. doi:10.1021/acsphotonics.5c02865
apa: Wetter, H., Wingenbach, J., Rehberg, F., Gao, W., Schumacher, S., & Zentgraf,
T. (2026). Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field
Coupling. ACS Photonics, 13, 2128–2133. https://doi.org/10.1021/acsphotonics.5c02865
bibtex: '@article{Wetter_Wingenbach_Rehberg_Gao_Schumacher_Zentgraf_2026, title={Polarization-
and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}, volume={13},
DOI={10.1021/acsphotonics.5c02865},
journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Wetter,
Helene and Wingenbach, Jan and Rehberg, Falk and Gao, Wenlong and Schumacher,
Stefan and Zentgraf, Thomas}, year={2026}, pages={2128–2133} }'
chicago: 'Wetter, Helene, Jan Wingenbach, Falk Rehberg, Wenlong Gao, Stefan Schumacher,
and Thomas Zentgraf. “Polarization- and Wave-Vector Selective Optical Metasurface
with Near-Field Coupling.” ACS Photonics 13 (2026): 2128–33. https://doi.org/10.1021/acsphotonics.5c02865.'
ieee: 'H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, and T. Zentgraf,
“Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling,”
ACS Photonics, vol. 13, pp. 2128–2133, 2026, doi: 10.1021/acsphotonics.5c02865.'
mla: Wetter, Helene, et al. “Polarization- and Wave-Vector Selective Optical Metasurface
with Near-Field Coupling.” ACS Photonics, vol. 13, American Chemical Society
(ACS), 2026, pp. 2128–33, doi:10.1021/acsphotonics.5c02865.
short: H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, T. Zentgraf,
ACS Photonics 13 (2026) 2128–2133.
date_created: 2026-04-02T07:25:30Z
date_updated: 2026-04-20T05:09:57Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1021/acsphotonics.5c02865
external_id:
arxiv:
- '2512.14452'
intvolume: ' 13'
keyword:
- metasurface
- waveguides
- Dirac point
- polarization
- negative coupling
language:
- iso: eng
main_file_link:
- url: https://pubs.acs.org/doi/10.1021/acsphotonics.5c02865
page: 2128-2133
publication: ACS Photonics
publication_identifier:
issn:
- 2330-4022
- 2330-4022
publication_status: published
publisher: American Chemical Society (ACS)
quality_controlled: '1'
status: public
title: Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field
Coupling
type: journal_article
user_id: '30525'
volume: 13
year: '2026'
...
---
_id: '65655'
abstract:
- lang: eng
text: A functionalization-free plasmonic nanogap platform enables reliable on-site
SERS based oxidation-state differentiation of arsenic through uniform metal-vacuum-metal
cavities with high electromagnetic enhancement and minimal background interference.
article_type: original
author:
- first_name: Minjun
full_name: Kim, Minjun
last_name: Kim
- first_name: Damun
full_name: Heo, Damun
last_name: Heo
- first_name: Sung Yoon
full_name: Cho, Sung Yoon
last_name: Cho
- first_name: Ye-Won
full_name: Lee, Ye-Won
last_name: Lee
- first_name: Sun-Hwa
full_name: Gu, Sun-Hwa
last_name: Gu
- first_name: Samir
full_name: Adhikari, Samir
last_name: Adhikari
- first_name: Donghan
full_name: Lee, Donghan
last_name: Lee
- first_name: Seok Soon
full_name: Jeong, Seok Soon
last_name: Jeong
- first_name: Hyuck Soo
full_name: Kim, Hyuck Soo
last_name: Kim
- first_name: Vasanthan
full_name: Devaraj, Vasanthan
last_name: Devaraj
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Min Yong
full_name: Jeon, Min Yong
last_name: Jeon
- first_name: Jong-Min
full_name: Lee, Jong-Min
last_name: Lee
citation:
ama: Kim M, Heo D, Cho SY, et al. A functionalization-free plasmonic hole-sphere
nanogap SERS platform for reliable on-site analysis and oxide-state classification.
Nanoscale. 2026;18(8):4292-4299. doi:10.1039/d5nr03414k
apa: Kim, M., Heo, D., Cho, S. Y., Lee, Y.-W., Gu, S.-H., Adhikari, S., Lee, D.,
Jeong, S. S., Kim, H. S., Devaraj, V., Zentgraf, T., Jeon, M. Y., & Lee, J.-M.
(2026). A functionalization-free plasmonic hole-sphere nanogap SERS platform for
reliable on-site analysis and oxide-state classification. Nanoscale, 18(8),
4292–4299. https://doi.org/10.1039/d5nr03414k
bibtex: '@article{Kim_Heo_Cho_Lee_Gu_Adhikari_Lee_Jeong_Kim_Devaraj_et al._2026,
title={A functionalization-free plasmonic hole-sphere nanogap SERS platform for
reliable on-site analysis and oxide-state classification}, volume={18}, DOI={10.1039/d5nr03414k}, number={8},
journal={Nanoscale}, publisher={Royal Society of Chemistry (RSC)}, author={Kim,
Minjun and Heo, Damun and Cho, Sung Yoon and Lee, Ye-Won and Gu, Sun-Hwa and Adhikari,
Samir and Lee, Donghan and Jeong, Seok Soon and Kim, Hyuck Soo and Devaraj, Vasanthan
and et al.}, year={2026}, pages={4292–4299} }'
chicago: 'Kim, Minjun, Damun Heo, Sung Yoon Cho, Ye-Won Lee, Sun-Hwa Gu, Samir Adhikari,
Donghan Lee, et al. “A Functionalization-Free Plasmonic Hole-Sphere Nanogap SERS
Platform for Reliable on-Site Analysis and Oxide-State Classification.” Nanoscale
18, no. 8 (2026): 4292–99. https://doi.org/10.1039/d5nr03414k.'
ieee: 'M. Kim et al., “A functionalization-free plasmonic hole-sphere nanogap
SERS platform for reliable on-site analysis and oxide-state classification,” Nanoscale,
vol. 18, no. 8, pp. 4292–4299, 2026, doi: 10.1039/d5nr03414k.'
mla: Kim, Minjun, et al. “A Functionalization-Free Plasmonic Hole-Sphere Nanogap
SERS Platform for Reliable on-Site Analysis and Oxide-State Classification.” Nanoscale,
vol. 18, no. 8, Royal Society of Chemistry (RSC), 2026, pp. 4292–99, doi:10.1039/d5nr03414k.
short: M. Kim, D. Heo, S.Y. Cho, Y.-W. Lee, S.-H. Gu, S. Adhikari, D. Lee, S.S.
Jeong, H.S. Kim, V. Devaraj, T. Zentgraf, M.Y. Jeon, J.-M. Lee, Nanoscale 18 (2026)
4292–4299.
date_created: 2026-05-20T06:53:30Z
date_updated: 2026-05-20T06:55:49Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1039/d5nr03414k
intvolume: ' 18'
issue: '8'
language:
- iso: eng
main_file_link:
- url: https://pubs.rsc.org/en/content/articlelanding/2026/nr/d5nr03414k
page: 4292-4299
publication: Nanoscale
publication_identifier:
issn:
- 2040-3364
- 2040-3372
publication_status: published
publisher: Royal Society of Chemistry (RSC)
quality_controlled: '1'
status: public
title: A functionalization-free plasmonic hole-sphere nanogap SERS platform for reliable
on-site analysis and oxide-state classification
type: journal_article
user_id: '30525'
volume: 18
year: '2026'
...
---
_id: '65906'
article_number: '1407507'
author:
- first_name: Xiao
full_name: Jin, Xiao
last_name: Jin
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: 'Jin X, Zentgraf T. OAM-multiplexed holography via cascaded metasurfaces without
post sampling and position multiplexing. In: MacDonald KF, Zayats AV, Staude I,
eds. Metamaterials XV. Vol 14075. SPIE; 2026. doi:10.1117/12.3096579'
apa: Jin, X., & Zentgraf, T. (2026). OAM-multiplexed holography via cascaded
metasurfaces without post sampling and position multiplexing. In K. F. MacDonald,
A. V. Zayats, & I. Staude (Eds.), Metamaterials XV (No. 1407507; Vol.
14075). SPIE. https://doi.org/10.1117/12.3096579
bibtex: '@inproceedings{Jin_Zentgraf_2026, title={OAM-multiplexed holography via
cascaded metasurfaces without post sampling and position multiplexing}, volume={14075},
DOI={10.1117/12.3096579}, number={1407507},
booktitle={Metamaterials XV}, publisher={SPIE}, author={Jin, Xiao and Zentgraf,
Thomas}, editor={MacDonald, Kevin F. and Zayats, Anatoly V. and Staude, Isabelle},
year={2026} }'
chicago: Jin, Xiao, and Thomas Zentgraf. “OAM-Multiplexed Holography via Cascaded
Metasurfaces without Post Sampling and Position Multiplexing.” In Metamaterials
XV, edited by Kevin F. MacDonald, Anatoly V. Zayats, and Isabelle Staude,
Vol. 14075. SPIE, 2026. https://doi.org/10.1117/12.3096579.
ieee: 'X. Jin and T. Zentgraf, “OAM-multiplexed holography via cascaded metasurfaces
without post sampling and position multiplexing,” in Metamaterials XV,
Strasbourg, France, 2026, vol. 14075, doi: 10.1117/12.3096579.'
mla: Jin, Xiao, and Thomas Zentgraf. “OAM-Multiplexed Holography via Cascaded Metasurfaces
without Post Sampling and Position Multiplexing.” Metamaterials XV, edited
by Kevin F. MacDonald et al., vol. 14075, 1407507, SPIE, 2026, doi:10.1117/12.3096579.
short: 'X. Jin, T. Zentgraf, in: K.F. MacDonald, A.V. Zayats, I. Staude (Eds.),
Metamaterials XV, SPIE, 2026.'
conference:
location: Strasbourg, France
name: SPIE Photonics Europe 2026
date_created: 2026-06-16T07:37:13Z
date_updated: 2026-06-16T07:40:15Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1117/12.3096579
editor:
- first_name: Kevin F.
full_name: MacDonald, Kevin F.
last_name: MacDonald
- first_name: Anatoly V.
full_name: Zayats, Anatoly V.
last_name: Zayats
- first_name: Isabelle
full_name: Staude, Isabelle
last_name: Staude
intvolume: ' 14075'
language:
- iso: eng
main_file_link:
- url: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/14075/3096579/OAM-multiplexed-holography-via-cascaded-metasurfaces-without-post-sampling-and/10.1117/12.3096579.full
publication: Metamaterials XV
publication_status: published
publisher: SPIE
status: public
title: OAM-multiplexed holography via cascaded metasurfaces without post sampling
and position multiplexing
type: conference
user_id: '30525'
volume: 14075
year: '2026'
...
---
_id: '66555'
abstract:
- lang: eng
text: 'Scalable plasmonic technologies face a critical trade‐off: few‐body architectures
offer high enhancement but are sensitive to fabrication flaws, while scalable
methods like solid‐state dewetting yield large, low‐enhancement gaps. We introduce
a paradigm shift using a many‐body plasmonic architecture inspired by statistical
mechanics. By moving toward the continuum limit, local geometric variations are
statistically averaged out, effectively decoupling optical performance from microscopic
disorder. We implement this concept via a lithography‐ and etching‐free, multi‐step
dewetting strategy, creating wafer‐scale nanoclusters. This process strategically
forms a robust many‐body system by introducing numerous small satellite nanoparticles
between larger particles. Crucially, this design achieves a high collective enhancement
that surpasses even optimized few‐body systems, despite having larger individual
gaps. Under optimized conditions, these substrates exhibit a surface‐enhanced
Raman scattering enhancement factor approaching 4 × 10^8 with unprecedented reproducibility
(RSD of ∼10%). This scalable, low‐cost concept establishes a practical route toward
reproducible wafer‐scale nanophotonic platforms for sensing, spectroscopy, and
quantum technologies.'
article_number: e71610
article_type: original
author:
- first_name: Minjun
full_name: Kim, Minjun
last_name: Kim
- first_name: Vasanthan
full_name: Devaraj, Vasanthan
id: '103814'
last_name: Devaraj
- first_name: Hyeon‐Seok
full_name: Seo, Hyeon‐Seok
last_name: Seo
- first_name: Seong‐Jae
full_name: Eom, Seong‐Jae
last_name: Eom
- first_name: Jeong‐Su
full_name: Lee, Jeong‐Su
last_name: Lee
- first_name: Donghan
full_name: Lee, Donghan
last_name: Lee
- first_name: Min Yong
full_name: Jeon, Min Yong
last_name: Jeon
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Jong‐Min
full_name: Lee, Jong‐Min
last_name: Lee
citation:
ama: Kim M, Devaraj V, Seo H, et al. Engineering Disordered Many‐Particle Plasmonic
Nanoclusters for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement.
Laser & Photonics Reviews. Published online 2026. doi:10.1002/lpor.71610
apa: Kim, M., Devaraj, V., Seo, H., Eom, S., Lee, J., Lee, D., Jeon, M. Y., Zentgraf,
T., & Lee, J. (2026). Engineering Disordered Many‐Particle Plasmonic Nanoclusters
for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement. Laser
& Photonics Reviews, Article e71610. https://doi.org/10.1002/lpor.71610
bibtex: '@article{Kim_Devaraj_Seo_Eom_Lee_Lee_Jeon_Zentgraf_Lee_2026, title={Engineering
Disordered Many‐Particle Plasmonic Nanoclusters for Wafer‐Scale Uniform and Giant
Electromagnetic Field Enhancement}, DOI={10.1002/lpor.71610},
number={e71610}, journal={Laser & Photonics Reviews}, publisher={Wiley},
author={Kim, Minjun and Devaraj, Vasanthan and Seo, Hyeon‐Seok and Eom, Seong‐Jae
and Lee, Jeong‐Su and Lee, Donghan and Jeon, Min Yong and Zentgraf, Thomas and
Lee, Jong‐Min}, year={2026} }'
chicago: Kim, Minjun, Vasanthan Devaraj, Hyeon‐Seok Seo, Seong‐Jae Eom, Jeong‐Su
Lee, Donghan Lee, Min Yong Jeon, Thomas Zentgraf, and Jong‐Min Lee. “Engineering
Disordered Many‐Particle Plasmonic Nanoclusters for Wafer‐Scale Uniform and Giant
Electromagnetic Field Enhancement.” Laser & Photonics Reviews,
2026. https://doi.org/10.1002/lpor.71610.
ieee: 'M. Kim et al., “Engineering Disordered Many‐Particle Plasmonic Nanoclusters
for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement,” Laser
& Photonics Reviews, Art. no. e71610, 2026, doi: 10.1002/lpor.71610.'
mla: Kim, Minjun, et al. “Engineering Disordered Many‐Particle Plasmonic Nanoclusters
for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement.” Laser
& Photonics Reviews, e71610, Wiley, 2026, doi:10.1002/lpor.71610.
short: M. Kim, V. Devaraj, H. Seo, S. Eom, J. Lee, D. Lee, M.Y. Jeon, T. Zentgraf,
J. Lee, Laser & Photonics Reviews (2026).
date_created: 2026-07-22T05:49:50Z
date_updated: 2026-07-22T05:52:38Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1002/lpor.71610
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://onlinelibrary.wiley.com/doi/10.1002/lpor.71610
oa: '1'
publication: Laser & Photonics Reviews
publication_identifier:
issn:
- 1863-8880
- 1863-8899
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Engineering Disordered Many‐Particle Plasmonic Nanoclusters for Wafer‐Scale
Uniform and Giant Electromagnetic Field Enhancement
type: journal_article
user_id: '30525'
year: '2026'
...
---
_id: '62816'
abstract:
- lang: eng
text: The increasing demand for advanced sensing technologies drives the development
of chemical sensors using innovative materials. In gas sensing, optical sensors
are often used to detect gases such as CO, NOx, and O2. Oxygen sensors typically
incorporate dyes into oxygen-permeable matrices like polymers, silica, or zeolites.
Alternatively, semiconductor surface chemistry can enable O2 detection. However,
these approaches are often limited by slow response and recovery times and low
selectivity, restricting their practical applications. The metal-organic framework
MOF-76(Eu) and its yttrium-modified variant, MOF-76(Eu/Y) are reported to exhibit
highly reversible and fast optical responses to varying O2 concentrations. Time-resolved
emission measurements are performed over short (seconds) and long (hours) timescales
using N2 and synthetic air mixtures. Cross-sensitivity to humidity is analyzed.
Multichannel scaling photon-counting experiments confirm quenching at the linker
level, as the emission lifetime remains nearly constant. Yttrium significantly
improves stability and performance at room temperature. Structural and optical
changes induced by yttrium are investigated. Additionally, MIL-78(Eu), another
Eu-BTC-based MOF with a different coordination environment, is synthesized. Unlike
MOF-76(Eu), MIL-78(Eu) exhibits distinct optical properties but lacks a reversible
response to O2. These results highlight the potential of MOF-76-based materials
for high-performance O2 sensing.
article_number: e11190
author:
- first_name: Zhenyu
full_name: Zhao, Zhenyu
last_name: Zhao
- first_name: Christian
full_name: Weinberger, Christian
id: '11848'
last_name: Weinberger
- first_name: Jakob
full_name: Steube, Jakob
id: '40342'
last_name: Steube
orcid: 0000-0003-3178-4429
- first_name: Matthias
full_name: Bauer, Matthias
id: '47241'
last_name: Bauer
orcid: 0000-0002-9294-6076
- first_name: Martin
full_name: Brehm, Martin
id: '100167'
last_name: Brehm
- first_name: Michael
full_name: Tiemann, Michael
id: '23547'
last_name: Tiemann
orcid: 0000-0003-1711-2722
citation:
ama: Zhao Z, Weinberger C, Steube J, Bauer M, Brehm M, Tiemann M. Fast‐Responding
O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76).
Advanced Functional Materials. Published online 2026. doi:10.1002/adfm.202511190
apa: Zhao, Z., Weinberger, C., Steube, J., Bauer, M., Brehm, M., & Tiemann,
M. (2026). Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic
Frameworks (MOF‐76). Advanced Functional Materials, Article e11190. https://doi.org/10.1002/adfm.202511190
bibtex: '@article{Zhao_Weinberger_Steube_Bauer_Brehm_Tiemann_2026, title={Fast‐Responding
O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)},
DOI={10.1002/adfm.202511190},
number={e11190}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Zhao,
Zhenyu and Weinberger, Christian and Steube, Jakob and Bauer, Matthias and Brehm,
Martin and Tiemann, Michael}, year={2026} }'
chicago: Zhao, Zhenyu, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin
Brehm, and Michael Tiemann. “Fast‐Responding O2 Gas Sensor Based on Luminescent
Europium Metal‐Organic Frameworks (MOF‐76).” Advanced Functional Materials,
2026. https://doi.org/10.1002/adfm.202511190.
ieee: 'Z. Zhao, C. Weinberger, J. Steube, M. Bauer, M. Brehm, and M. Tiemann, “Fast‐Responding
O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76),”
Advanced Functional Materials, Art. no. e11190, 2026, doi: 10.1002/adfm.202511190.'
mla: Zhao, Zhenyu, et al. “Fast‐Responding O2 Gas Sensor Based on Luminescent Europium
Metal‐Organic Frameworks (MOF‐76).” Advanced Functional Materials, e11190,
Wiley, 2026, doi:10.1002/adfm.202511190.
short: Z. Zhao, C. Weinberger, J. Steube, M. Bauer, M. Brehm, M. Tiemann, Advanced
Functional Materials (2026).
date_created: 2025-12-03T17:09:28Z
date_updated: 2026-10-15T08:01:40Z
department:
- _id: '35'
- _id: '2'
- _id: '307'
- _id: '230'
doi: 10.1002/adfm.202511190
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: Advanced Functional Materials
publication_identifier:
issn:
- 1616-301X
- 1616-3028
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks
(MOF‐76)
type: journal_article
user_id: '23547'
year: '2026'
...
---
_id: '66632'
abstract:
- lang: eng
text: Three‐dimensional (3D) assemblies of gold nanoparticles (AuNPs) offer a rich
platform for plasmonic coupling and near‐field engineering, yet their optical
behavior is often complex due to structural disorder and fabrication‐induced variability.
Here, we present a systematic optical investigation of large‐scale 3D AuNP assemblies
fabricated via meniscus‐guided assembly, focusing on the reproducibility, spatial
uniformity, and mode evolution of their plasmonic responses. Spatially‐resolved
dark‐field scattering measurements reveal that high‐aspect‐ratio AuNP pillars
exhibit uniform scattering spectra along their height and across different pillars,
despite variations in geometry and structure. Electromagnetic simulations suggest
that this robustness arises from a collective many‐particle plasmonic response
that remains optically active despite structural perturbations. The corresponding
near‐field and surface‐charge distributions remain spatially distributed under
representative structural perturbations, consistent with volumetric averaging
across the three‐dimensional assembly. Building on this robust platform, we introduce
compositional modulation through a core–satellite architecture by incorporating
smaller AuNPs. This yields a composition‐dependent spectral redistribution, including
the emergence of an additional long‐wavelength spectral feature in the core–satellite
assemblies. Wavelength‐dependent surface‐enhanced Raman scattering measurements
reveal contrasting responses under 633 and 785 nm excitation, reflecting redistribution
of local plasmonic coupling pathways. These results provide process‐enabled guidelines
for using meniscus‐guided 3D‐nanoprinting to realize robust nanoparticle assemblies.
article_number: e71686
article_type: original
author:
- first_name: Vasanthan
full_name: Devaraj, Vasanthan
id: '103814'
last_name: Devaraj
- first_name: Sunghyun
full_name: Kwak, Sunghyun
last_name: Kwak
- first_name: Hyeongjip
full_name: Kim, Hyeongjip
last_name: Kim
- first_name: Sang‐Keun
full_name: Sung, Sang‐Keun
last_name: Sung
- first_name: Jong‐Min
full_name: Lee, Jong‐Min
last_name: Lee
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Won‐Geun
full_name: Kim, Won‐Geun
last_name: Kim
citation:
ama: Devaraj V, Kwak S, Kim H, et al. Spatially Uniform and Defect‐Tolerant Plasmonic
Responses in 3D Printed Gold Nanoparticle Assemblies. Laser & Photonics
Reviews. Published online 2026. doi:10.1002/lpor.71686
apa: Devaraj, V., Kwak, S., Kim, H., Sung, S., Lee, J., Zentgraf, T., & Kim,
W. (2026). Spatially Uniform and Defect‐Tolerant Plasmonic Responses in 3D Printed
Gold Nanoparticle Assemblies. Laser & Photonics Reviews, Article
e71686. https://doi.org/10.1002/lpor.71686
bibtex: '@article{Devaraj_Kwak_Kim_Sung_Lee_Zentgraf_Kim_2026, title={Spatially
Uniform and Defect‐Tolerant Plasmonic Responses in 3D Printed Gold Nanoparticle
Assemblies}, DOI={10.1002/lpor.71686},
number={e71686}, journal={Laser & Photonics Reviews}, publisher={Wiley},
author={Devaraj, Vasanthan and Kwak, Sunghyun and Kim, Hyeongjip and Sung, Sang‐Keun
and Lee, Jong‐Min and Zentgraf, Thomas and Kim, Won‐Geun}, year={2026} }'
chicago: Devaraj, Vasanthan, Sunghyun Kwak, Hyeongjip Kim, Sang‐Keun Sung, Jong‐Min
Lee, Thomas Zentgraf, and Won‐Geun Kim. “Spatially Uniform and Defect‐Tolerant
Plasmonic Responses in 3D Printed Gold Nanoparticle Assemblies.” Laser &
Photonics Reviews, 2026. https://doi.org/10.1002/lpor.71686.
ieee: 'V. Devaraj et al., “Spatially Uniform and Defect‐Tolerant Plasmonic
Responses in 3D Printed Gold Nanoparticle Assemblies,” Laser & Photonics
Reviews, Art. no. e71686, 2026, doi: 10.1002/lpor.71686.'
mla: Devaraj, Vasanthan, et al. “Spatially Uniform and Defect‐Tolerant Plasmonic
Responses in 3D Printed Gold Nanoparticle Assemblies.” Laser & Photonics
Reviews, e71686, Wiley, 2026, doi:10.1002/lpor.71686.
short: V. Devaraj, S. Kwak, H. Kim, S. Sung, J. Lee, T. Zentgraf, W. Kim, Laser
& Photonics Reviews (2026).
date_created: 2026-08-03T06:43:03Z
date_updated: 2026-08-03T06:45:01Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1002/lpor.71686
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://onlinelibrary.wiley.com/doi/10.1002/lpor.71686
oa: '1'
publication: Laser & Photonics Reviews
publication_identifier:
issn:
- 1863-8880
- 1863-8899
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Spatially Uniform and Defect‐Tolerant Plasmonic Responses in 3D Printed Gold
Nanoparticle Assemblies
type: journal_article
user_id: '30525'
year: '2026'
...
---
_id: '66744'
author:
- first_name: Henna
full_name: Farheen, Henna
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- first_name: Yuheng
full_name: Chen, Yuheng
last_name: Chen
- first_name: Peigang
full_name: Chen, Peigang
last_name: Chen
- first_name: Pranshu
full_name: Maan, Pranshu
last_name: Maan
- first_name: Samuel
full_name: Peana, Samuel
last_name: Peana
- first_name: Alexander
full_name: Senichev, Alexander
last_name: Senichev
- first_name: Vladimir M.
full_name: Shalaev, Vladimir M.
last_name: Shalaev
- first_name: Alexandra
full_name: Boltasseva, Alexandra
last_name: Boltasseva
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Alexander V.
full_name: Kildishev, Alexander V.
last_name: Kildishev
citation:
ama: Farheen H, Chen Y, Chen P, et al. Efficient Silicon Nitride Quantum Interconnect
for Intrinsic Silicon Nitride Single-Photon Emitters. IEEE Journal of Selected
Topics in Quantum Electronics. Published online 2026:1-12. doi:10.1109/jstqe.2026.3722063
apa: Farheen, H., Chen, Y., Chen, P., Maan, P., Peana, S., Senichev, A., Shalaev,
V. M., Boltasseva, A., Förstner, J., & Kildishev, A. V. (2026). Efficient
Silicon Nitride Quantum Interconnect for Intrinsic Silicon Nitride Single-Photon
Emitters. IEEE Journal of Selected Topics in Quantum Electronics, 1–12.
https://doi.org/10.1109/jstqe.2026.3722063
bibtex: '@article{Farheen_Chen_Chen_Maan_Peana_Senichev_Shalaev_Boltasseva_Förstner_Kildishev_2026,
title={Efficient Silicon Nitride Quantum Interconnect for Intrinsic Silicon Nitride
Single-Photon Emitters}, DOI={10.1109/jstqe.2026.3722063},
journal={IEEE Journal of Selected Topics in Quantum Electronics}, publisher={Institute
of Electrical and Electronics Engineers (IEEE)}, author={Farheen, Henna and Chen,
Yuheng and Chen, Peigang and Maan, Pranshu and Peana, Samuel and Senichev, Alexander
and Shalaev, Vladimir M. and Boltasseva, Alexandra and Förstner, Jens and Kildishev,
Alexander V.}, year={2026}, pages={1–12} }'
chicago: Farheen, Henna, Yuheng Chen, Peigang Chen, Pranshu Maan, Samuel Peana,
Alexander Senichev, Vladimir M. Shalaev, Alexandra Boltasseva, Jens Förstner,
and Alexander V. Kildishev. “Efficient Silicon Nitride Quantum Interconnect for
Intrinsic Silicon Nitride Single-Photon Emitters.” IEEE Journal of Selected
Topics in Quantum Electronics, 2026, 1–12. https://doi.org/10.1109/jstqe.2026.3722063.
ieee: 'H. Farheen et al., “Efficient Silicon Nitride Quantum Interconnect
for Intrinsic Silicon Nitride Single-Photon Emitters,” IEEE Journal of Selected
Topics in Quantum Electronics, pp. 1–12, 2026, doi: 10.1109/jstqe.2026.3722063.'
mla: Farheen, Henna, et al. “Efficient Silicon Nitride Quantum Interconnect for
Intrinsic Silicon Nitride Single-Photon Emitters.” IEEE Journal of Selected
Topics in Quantum Electronics, Institute of Electrical and Electronics Engineers
(IEEE), 2026, pp. 1–12, doi:10.1109/jstqe.2026.3722063.
short: H. Farheen, Y. Chen, P. Chen, P. Maan, S. Peana, A. Senichev, V.M. Shalaev,
A. Boltasseva, J. Förstner, A.V. Kildishev, IEEE Journal of Selected Topics in
Quantum Electronics (2026) 1–12.
date_created: 2026-08-19T11:37:05Z
date_updated: 2026-08-19T13:07:08Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '623'
doi: 10.1109/jstqe.2026.3722063
file:
- access_level: local
content_type: application/pdf
creator: fossie
date_created: 2026-08-19T13:04:15Z
date_updated: 2026-08-19T13:04:15Z
embargo: 2027-08-19
embargo_to: open_access
file_id: '66745'
file_name: 2026-08 Farheen - IEEE JSTQE - Efficient_Silicon_Nitride_Quantum_Interconnect_for_Intrinsic_Silicon_Nitride_Single-Photon_Emitters
(PREPRINT).pdf
file_size: 33382776
relation: main_file
file_date_updated: 2026-08-19T13:04:15Z
has_accepted_license: '1'
keyword:
- tet_topic_opticalantenna
language:
- iso: eng
page: 1-12
project:
- _id: '266'
name: 'PhoQC: Photonisches Quantencomputing'
publication: IEEE Journal of Selected Topics in Quantum Electronics
publication_identifier:
issn:
- 1077-260X
- 1558-4542
publication_status: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
status: public
title: Efficient Silicon Nitride Quantum Interconnect for Intrinsic Silicon Nitride
Single-Photon Emitters
type: journal_article
user_id: '158'
year: '2026'
...
---
_id: '66746'
abstract:
- lang: eng
text: Several recent proposals in integrated photonics concern components
that operate on so-called semi-guided waves. Given a dielectric multilayer slab
structure, these are wave solutions that propagate along the slab with the functional
dependence of ordinary harmonic plane waves, but with modal confinement in the
direction perpendicular to the slab plane. While the in-plane unbounded waves
are valid as a theoretical construct, practical devices will have to work with
laterally confined optical fields. To that end we consider Gaussian superpositions
of semi-guided waves, for a range of in-plane propagation angles, here named “semi-guided
Gaussian beams.” This paper collects a series of relations that characterize these
wave bundles, with emphasis on their divergence. The expressions resemble standard
results for optical Gaussian beams, with modifications originating from the 1-D
guiding and 1-D bundling. Examples for a high-contrast silicon-on-insulator slab
at a typical telecom wavelength are discussed.
article_number: '1950'
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Förstner J. Semi-guided Gaussian beams. Journal of the Optical
Society of America B. 2026;43(9). doi:10.1364/josab.606932
apa: Hammer, M., & Förstner, J. (2026). Semi-guided Gaussian beams. Journal
of the Optical Society of America B, 43(9), Article 1950. https://doi.org/10.1364/josab.606932
bibtex: '@article{Hammer_Förstner_2026, title={Semi-guided Gaussian beams}, volume={43},
DOI={10.1364/josab.606932},
number={91950}, journal={Journal of the Optical Society of America B}, publisher={Optica
Publishing Group}, author={Hammer, Manfred and Förstner, Jens}, year={2026} }'
chicago: Hammer, Manfred, and Jens Förstner. “Semi-Guided Gaussian Beams.” Journal
of the Optical Society of America B 43, no. 9 (2026). https://doi.org/10.1364/josab.606932.
ieee: 'M. Hammer and J. Förstner, “Semi-guided Gaussian beams,” Journal of the
Optical Society of America B, vol. 43, no. 9, Art. no. 1950, 2026, doi: 10.1364/josab.606932.'
mla: Hammer, Manfred, and Jens Förstner. “Semi-Guided Gaussian Beams.” Journal
of the Optical Society of America B, vol. 43, no. 9, 1950, Optica Publishing
Group, 2026, doi:10.1364/josab.606932.
short: M. Hammer, J. Förstner, Journal of the Optical Society of America B 43 (2026).
date_created: 2026-08-19T13:09:51Z
date_updated: 2026-08-31T09:21:58Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
doi: 10.1364/josab.606932
file:
- access_level: open_access
content_type: application/pdf
creator: fossie
date_created: 2026-08-31T09:19:29Z
date_updated: 2026-08-31T09:19:29Z
file_id: '66876'
file_name: 2026-08 Hammer - JOSA B - Semi-guided Gaussian Beams.pdf
file_size: 1886572
relation: main_file
file_date_updated: 2026-08-31T09:19:29Z
has_accepted_license: '1'
intvolume: ' 43'
issue: '9'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
publication: Journal of the Optical Society of America B
publication_identifier:
issn:
- 0740-3224
- 1520-8540
publication_status: published
publisher: Optica Publishing Group
status: public
title: Semi-guided Gaussian beams
type: journal_article
user_id: '158'
volume: 43
year: '2026'
...
---
_id: '66870'
abstract:
- lang: eng
text: Janus metasurfaces have attracted considerable attention in encrypted communication,
imaging, and display due to their unusual bidirectional asymmetric optical manipulation
characteristics. Particularly, their multifunctionalization is of great significance
for enhancing the compactness and integration of optical systems. However, the
realization of multifunctional Janus metasurfaces in the optical band still faces
enormous difficulties and challenges, which are essentially limited by the anti-error
design and processing methods of multi-layer cascade metasurfaces. Here, a triple-layer
Janus metasurface based on cascaded plasmonic nano-antenna arrays fully buried
in SiO2 is constructed. Among them, the cascaded plasma nano-antenna consists
of two types of enantiomers for each wavelength. Each enantiomer is fabricated
with two layers of L-shaped nanostructures with phase modulation and one layer
of dimer nanostructures with polarization selection stacked alternately along
the optical axis. We experimentally show that the Janus metasurface achieves bidirectional
asymmetric multi-channel holographic encryption, simultaneously using propagation
direction, phase, polarization, and wavelength for the first time in the near-infrared
band, which is expected to provide a frontier route for multifunctional optical
displays, high-level optical information encryption, and large-capacity full-duplex
communication.
article_type: original
author:
- first_name: Guocui
full_name: Wang, Guocui
last_name: Wang
- first_name: René
full_name: Geromel, René
last_name: Geromel
- first_name: Qunshuo
full_name: Wei, Qunshuo
last_name: Wei
- first_name: Ruizhe
full_name: Zhao, Ruizhe
last_name: Zhao
- first_name: Xiaowei
full_name: Li, Xiaowei
last_name: Li
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Lingling
full_name: Huang, Lingling
last_name: Huang
citation:
ama: Wang G, Geromel R, Wei Q, et al. Asymmetric multi-channel holography by cascaded
plasmonic Janus metasurfaces. Advanced Photonics. 2026;8(05):1-11. doi:10.1117/1.ap.8.5.056006
apa: Wang, G., Geromel, R., Wei, Q., Zhao, R., Li, X., Zentgraf, T., & Huang,
L. (2026). Asymmetric multi-channel holography by cascaded plasmonic Janus metasurfaces.
Advanced Photonics, 8(05), 1–11. https://doi.org/10.1117/1.ap.8.5.056006
bibtex: '@article{Wang_Geromel_Wei_Zhao_Li_Zentgraf_Huang_2026, title={Asymmetric
multi-channel holography by cascaded plasmonic Janus metasurfaces}, volume={8},
DOI={10.1117/1.ap.8.5.056006},
number={05}, journal={Advanced Photonics}, publisher={SPIE-Intl Soc Optical Eng},
author={Wang, Guocui and Geromel, René and Wei, Qunshuo and Zhao, Ruizhe and Li,
Xiaowei and Zentgraf, Thomas and Huang, Lingling}, year={2026}, pages={1–11} }'
chicago: 'Wang, Guocui, René Geromel, Qunshuo Wei, Ruizhe Zhao, Xiaowei Li, Thomas
Zentgraf, and Lingling Huang. “Asymmetric Multi-Channel Holography by Cascaded
Plasmonic Janus Metasurfaces.” Advanced Photonics 8, no. 05 (2026): 1–11.
https://doi.org/10.1117/1.ap.8.5.056006.'
ieee: 'G. Wang et al., “Asymmetric multi-channel holography by cascaded plasmonic
Janus metasurfaces,” Advanced Photonics, vol. 8, no. 05, pp. 1–11, 2026,
doi: 10.1117/1.ap.8.5.056006.'
mla: Wang, Guocui, et al. “Asymmetric Multi-Channel Holography by Cascaded Plasmonic
Janus Metasurfaces.” Advanced Photonics, vol. 8, no. 05, SPIE-Intl Soc
Optical Eng, 2026, pp. 1–11, doi:10.1117/1.ap.8.5.056006.
short: G. Wang, R. Geromel, Q. Wei, R. Zhao, X. Li, T. Zentgraf, L. Huang, Advanced
Photonics 8 (2026) 1–11.
date_created: 2026-08-31T05:44:11Z
date_updated: 2026-08-31T05:48:43Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
doi: 10.1117/1.ap.8.5.056006
intvolume: ' 8'
issue: '05'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.researching.cn/Articles/OJf9b235a7c5a0a3bf
oa: '1'
page: 1-11
publication: Advanced Photonics
publication_identifier:
issn:
- 2577-5421
- 2577-5421
publication_status: published
publisher: SPIE-Intl Soc Optical Eng
quality_controlled: '1'
status: public
title: Asymmetric multi-channel holography by cascaded plasmonic Janus metasurfaces
type: journal_article
user_id: '30525'
volume: 8
year: '2026'
...
---
_id: '67146'
abstract:
- lang: eng
text: "\r\n High-harmonic generation in solids enables
probing of strong-field electron dynamics in condensed matter and the development
of compact ultrafast light sources. Whereas most studies have focused on above-bandgap
high-order harmonics, which are usually interpreted through short electron-hole
trajectories that recombine within one optical cycle, the microscopic origin of
low-order emission near the bandgap remains poorly understood. Here, we investigate
near-bandgap harmonic generation in ZnO by combining semiconductor Bloch equations with
a complex-time quantum-trajectory analysis. Our results indicate that these harmonics
are not a continuation of the short trajectory. Rather, they originate from multiple-scattering
trajectories, in which the electron-hole pair undergoes repeated Bragg scattering
at the Brillouin-zone boundary and electron-hole reencounter near the\r\n \r\n Γ\r\n \r\n point
before the actual recombination occurs. We identify that the imaginary part of
the electron-hole displacement provides a practical diagnostic of the residual
tunneling memory. Real-space electron-hole overlap alone does not imply coherent
recombination unless the full complex displacement vanishes. These results clarify
the microscopic picture of near-bandgap harmonic emission in ZnO and offer a framework
for interpreting phase-resolved strong-field dynamics in solids.\r\n "
article_number: '033303'
author:
- first_name: Xunqin
full_name: Huo, Xunqin
last_name: Huo
- first_name: Xiwang
full_name: Liu, Xiwang
last_name: Liu
- 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: Weifeng
full_name: Yang, Weifeng
last_name: Yang
citation:
ama: Huo X, Liu X, Yang S, Song X, Meier T, Yang W. Near-bandgap harmonic generation
in solids from multiple scattering revealed by complex quantum trajectories. Physical
Review Research. 2026;8(3). doi:10.1103/l939-jglf
apa: Huo, X., Liu, X., Yang, S., Song, X., Meier, T., & Yang, W. (2026). Near-bandgap
harmonic generation in solids from multiple scattering revealed by complex quantum
trajectories. Physical Review Research, 8(3), Article 033303. https://doi.org/10.1103/l939-jglf
bibtex: '@article{Huo_Liu_Yang_Song_Meier_Yang_2026, title={Near-bandgap harmonic
generation in solids from multiple scattering revealed by complex quantum trajectories},
volume={8}, DOI={10.1103/l939-jglf},
number={3033303}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Huo, Xunqin and Liu, Xiwang and Yang, Shidong and Song,
Xiaohong and Meier, Torsten and Yang, Weifeng}, year={2026} }'
chicago: Huo, Xunqin, Xiwang Liu, Shidong Yang, Xiaohong Song, Torsten Meier, and
Weifeng Yang. “Near-Bandgap Harmonic Generation in Solids from Multiple Scattering
Revealed by Complex Quantum Trajectories.” Physical Review Research 8,
no. 3 (2026). https://doi.org/10.1103/l939-jglf.
ieee: 'X. Huo, X. Liu, S. Yang, X. Song, T. Meier, and W. Yang, “Near-bandgap harmonic
generation in solids from multiple scattering revealed by complex quantum trajectories,”
Physical Review Research, vol. 8, no. 3, Art. no. 033303, 2026, doi: 10.1103/l939-jglf.'
mla: Huo, Xunqin, et al. “Near-Bandgap Harmonic Generation in Solids from Multiple
Scattering Revealed by Complex Quantum Trajectories.” Physical Review Research,
vol. 8, no. 3, 033303, American Physical Society (APS), 2026, doi:10.1103/l939-jglf.
short: X. Huo, X. Liu, S. Yang, X. Song, T. Meier, W. Yang, Physical Review Research
8 (2026).
date_created: 2026-09-15T06:50:14Z
date_updated: 2026-09-15T06:51:05Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '623'
doi: 10.1103/l939-jglf
intvolume: ' 8'
issue: '3'
language:
- iso: eng
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Near-bandgap harmonic generation in solids from multiple scattering revealed
by complex quantum trajectories
type: journal_article
user_id: '16199'
volume: 8
year: '2026'
...
---
_id: '67424'
article_number: '043101'
author:
- first_name: Shidong
full_name: Yang, Shidong
last_name: Yang
- first_name: Jianbin
full_name: Lin, Jianbin
last_name: Lin
- first_name: Xiwang
full_name: Liu, Xiwang
last_name: Liu
- first_name: Yu
full_name: Jiang, Yu
last_name: Jiang
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Xiaohong
full_name: Song, Xiaohong
last_name: Song
- first_name: Weifeng
full_name: Yang, Weifeng
last_name: Yang
citation:
ama: Yang S, Lin J, Liu X, et al. Plateau reshaping in solid-state high-harmonic
generation driven by the photon statistics of a bright squeezed vacuum. Physical
Review A. 2026;114(4). doi:10.1103/mhql-g61x
apa: Yang, S., Lin, J., Liu, X., Jiang, Y., Meier, T., Song, X., & Yang, W.
(2026). Plateau reshaping in solid-state high-harmonic generation driven by the
photon statistics of a bright squeezed vacuum. Physical Review A, 114(4),
Article 043101. https://doi.org/10.1103/mhql-g61x
bibtex: '@article{Yang_Lin_Liu_Jiang_Meier_Song_Yang_2026, title={Plateau reshaping
in solid-state high-harmonic generation driven by the photon statistics of a bright
squeezed vacuum}, volume={114}, DOI={10.1103/mhql-g61x},
number={4043101}, journal={Physical Review A}, publisher={American Physical Society
(APS)}, author={Yang, Shidong and Lin, Jianbin and Liu, Xiwang and Jiang, Yu and
Meier, Torsten and Song, Xiaohong and Yang, Weifeng}, year={2026} }'
chicago: Yang, Shidong, Jianbin Lin, Xiwang Liu, Yu Jiang, Torsten Meier, Xiaohong
Song, and Weifeng Yang. “Plateau Reshaping in Solid-State High-Harmonic Generation
Driven by the Photon Statistics of a Bright Squeezed Vacuum.” Physical Review
A 114, no. 4 (2026). https://doi.org/10.1103/mhql-g61x.
ieee: 'S. Yang et al., “Plateau reshaping in solid-state high-harmonic generation
driven by the photon statistics of a bright squeezed vacuum,” Physical Review
A, vol. 114, no. 4, Art. no. 043101, 2026, doi: 10.1103/mhql-g61x.'
mla: Yang, Shidong, et al. “Plateau Reshaping in Solid-State High-Harmonic Generation
Driven by the Photon Statistics of a Bright Squeezed Vacuum.” Physical Review
A, vol. 114, no. 4, 043101, American Physical Society (APS), 2026, doi:10.1103/mhql-g61x.
short: S. Yang, J. Lin, X. Liu, Y. Jiang, T. Meier, X. Song, W. Yang, Physical Review
A 114 (2026).
date_created: 2026-10-08T05:21:52Z
date_updated: 2026-10-08T05:23:18Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '35'
- _id: '15'
- _id: '230'
- _id: '623'
doi: 10.1103/mhql-g61x
intvolume: ' 114'
issue: '4'
language:
- iso: eng
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Plateau reshaping in solid-state high-harmonic generation driven by the photon
statistics of a bright squeezed vacuum
type: journal_article
user_id: '16199'
volume: 114
year: '2026'
...
---
_id: '66036'
abstract:
- lang: eng
text: Light-assisted metal oxide-based chemiresistive gas sensors are widely explored
for operation at relatively low temperatures, yet the investigation of the role
of irradiance, as opposed to wavelength, remains underrepresented. Here, we systematically
quantify the irradiance-dependent behavior of ordered mesoporous In2O3 under visible
light illumination. Photoconductivity measurements reveal two distinct irradiance
regimes consistent with trap-limited transport at low power and recombination-
or saturation-limited transport at high power. Gas sensing experiments towards
CO and H2 show a pronounced non-monotonic response, reaching maximum responses
of 0.74 for 135 ppm CO at 67 mW cm−2 and 0.64 for 90 ppm H2 at 11 mW cm−2, followed
by strong suppression at higher irradiance. Illumination also accelerated the
response kinetics. At 60 ppm, t90 decreases from 96 to 12 s for CO and 141 to
27 s for H2, corresponding to an 8- and 5-fold faster response time, respectively.
Near-ambient pressure-XPS under controlled atmosphere and density functional theory
calculations indicate defect-mediated excitation. Oxygen vacancy states and illumination-induced
modification of surface oxygen species govern this behavior. The results establish
irradiance as a critical mechanistic parameter that determines whether In2O3 operates
in a surface-controlled or bulk photoconductive regime. These findings highlight
the need to explicitly optimize and report irradiance in illuminated gas sensor
studies, and not only the power consumption of the light source.
article_number: acssensors.6c01100
article_type: original
author:
- first_name: Sven
full_name: Voth, Sven
last_name: Voth
- first_name: Zhenyu
full_name: Zhao, Zhenyu
last_name: Zhao
- first_name: Dominik
full_name: Baier, Dominik
last_name: Baier
- first_name: Alexandra
full_name: Glass, Alexandra
last_name: Glass
- first_name: Hossam
full_name: Elgabarty, Hossam
id: '60250'
last_name: Elgabarty
orcid: 0000-0002-4945-1481
- first_name: Oskar J.
full_name: Sandberg, Oskar J.
last_name: Sandberg
- first_name: Guido
full_name: Grundmeier, Guido
id: '194'
last_name: Grundmeier
- first_name: Michael
full_name: Tiemann, Michael
id: '23547'
last_name: Tiemann
orcid: 0000-0003-1711-2722
- first_name: Jan-Henrik
full_name: Smått, Jan-Henrik
last_name: Smått
- first_name: Nicklas
full_name: Anttu, Nicklas
last_name: Anttu
- first_name: Teresa
full_name: de los Arcos, Teresa
last_name: de los Arcos
- first_name: Christian
full_name: Weinberger, Christian
id: '11848'
last_name: Weinberger
citation:
ama: 'Voth S, Zhao Z, Baier D, et al. Role of Irradiance in Light-Activated In2O3
Gas Sensors: Why More Light Is Not Always Better. ACS Sensors. 2026;11(7).
doi:10.1021/acssensors.6c01100'
apa: 'Voth, S., Zhao, Z., Baier, D., Glass, A., Elgabarty, H., Sandberg, O. J.,
Grundmeier, G., Tiemann, M., Smått, J.-H., Anttu, N., de los Arcos, T., &
Weinberger, C. (2026). Role of Irradiance in Light-Activated In2O3
Gas Sensors: Why More Light Is Not Always Better. ACS Sensors, 11(7),
Article acssensors.6c01100. https://doi.org/10.1021/acssensors.6c01100'
bibtex: '@article{Voth_Zhao_Baier_Glass_Elgabarty_Sandberg_Grundmeier_Tiemann_Smått_Anttu_et
al._2026, title={Role of Irradiance in Light-Activated In2O3
Gas Sensors: Why More Light Is Not Always Better}, volume={11}, DOI={10.1021/acssensors.6c01100},
number={7acssensors.6c01100}, journal={ACS Sensors}, publisher={American Chemical
Society (ACS)}, author={Voth, Sven and Zhao, Zhenyu and Baier, Dominik and Glass,
Alexandra and Elgabarty, Hossam and Sandberg, Oskar J. and Grundmeier, Guido and
Tiemann, Michael and Smått, Jan-Henrik and Anttu, Nicklas and et al.}, year={2026}
}'
chicago: 'Voth, Sven, Zhenyu Zhao, Dominik Baier, Alexandra Glass, Hossam Elgabarty,
Oskar J. Sandberg, Guido Grundmeier, et al. “Role of Irradiance in Light-Activated
In2O3 Gas Sensors: Why More Light Is Not Always Better.”
ACS Sensors 11, no. 7 (2026). https://doi.org/10.1021/acssensors.6c01100.'
ieee: 'S. Voth et al., “Role of Irradiance in Light-Activated In2O3
Gas Sensors: Why More Light Is Not Always Better,” ACS Sensors, vol. 11,
no. 7, Art. no. acssensors.6c01100, 2026, doi: 10.1021/acssensors.6c01100.'
mla: 'Voth, Sven, et al. “Role of Irradiance in Light-Activated In2O3
Gas Sensors: Why More Light Is Not Always Better.” ACS Sensors, vol. 11,
no. 7, acssensors.6c01100, American Chemical Society (ACS), 2026, doi:10.1021/acssensors.6c01100.'
short: S. Voth, Z. Zhao, D. Baier, A. Glass, H. Elgabarty, O.J. Sandberg, G. Grundmeier,
M. Tiemann, J.-H. Smått, N. Anttu, T. de los Arcos, C. Weinberger, ACS Sensors
11 (2026).
date_created: 2026-06-24T10:36:11Z
date_updated: 2026-10-15T08:04:24Z
department:
- _id: '307'
- _id: '35'
- _id: '230'
- _id: '2'
doi: 10.1021/acssensors.6c01100
intvolume: ' 11'
issue: '7'
keyword:
- resistive gas sensing
- indium oxide
- photoactivation
- irradiance
- photoconductivity
- charge carrier dynamics
- oxygen vacancies
language:
- iso: eng
project:
- _id: '1130'
name: Exploration of optoelectronic properties of metal oxides used in gas sensors
and solar cells
publication: ACS Sensors
publication_identifier:
issn:
- 2379-3694
- 2379-3694
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: 'Role of Irradiance in Light-Activated In2O3 Gas Sensors:
Why More Light Is Not Always Better'
type: journal_article
user_id: '23547'
volume: 11
year: '2026'
...