--- _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: '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: '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. article_number: acsphotonics.5c02865 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. Published online 2026. 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, Article acsphotonics.5c02865. 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}, DOI={10.1021/acsphotonics.5c02865}, number={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} }' 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, 2026. 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, Art. no. acsphotonics.5c02865, 2026, doi: 10.1021/acsphotonics.5c02865.' mla: Wetter, Helene, et al. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” ACS Photonics, acsphotonics.5c02865, American Chemical Society (ACS), 2026, doi:10.1021/acsphotonics.5c02865. short: H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, T. Zentgraf, ACS Photonics (2026). date_created: 2026-04-02T07:25:30Z date_updated: 2026-04-02T07:31:24Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1021/acsphotonics.5c02865 external_id: arxiv: - '2512.14452' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2512.14452 oa: '1' 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' 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: '60022' author: - first_name: Michael full_name: Brauckmann, Michael last_name: Brauckmann - first_name: Emmanuel full_name: Narvaez Castaneda, Emmanuel last_name: Narvaez Castaneda - first_name: Dustin full_name: Siebert, Dustin last_name: Siebert - first_name: Benjamin full_name: Brecht, Benjamin id: '27150' last_name: Brecht orcid: '0000-0003-4140-0556 ' - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 citation: ama: 'Brauckmann M, Narvaez Castaneda E, Siebert D, Brecht B, Förstner J, Zentgraf T. Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators. In: Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics. ; 2025.' apa: Brauckmann, M., Narvaez Castaneda, E., Siebert, D., Brecht, B., Förstner, J., & Zentgraf, T. (2025). Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators. Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics. META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Malaga, Spain. bibtex: '@inproceedings{Brauckmann_Narvaez Castaneda_Siebert_Brecht_Förstner_Zentgraf_2025, title={Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators}, booktitle={Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics}, author={Brauckmann, Michael and Narvaez Castaneda, Emmanuel and Siebert, Dustin and Brecht, Benjamin and Förstner, Jens and Zentgraf, Thomas}, year={2025} }' chicago: Brauckmann, Michael, Emmanuel Narvaez Castaneda, Dustin Siebert, Benjamin Brecht, Jens Förstner, and Thomas Zentgraf. “Enhancement Of Light-Matter Interaction In Topological Waveguides And Resonators.” In Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2025. ieee: M. Brauckmann, E. Narvaez Castaneda, D. Siebert, B. Brecht, J. Förstner, and T. Zentgraf, “Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators,” presented at the META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Malaga, Spain, 2025. mla: Brauckmann, Michael, et al. “Enhancement Of Light-Matter Interaction In Topological Waveguides And Resonators.” Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2025. short: 'M. Brauckmann, E. Narvaez Castaneda, D. Siebert, B. Brecht, J. Förstner, T. Zentgraf, in: Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2025.' conference: end_date: 2025-07-25 location: Malaga, Spain name: META 2025 - The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics start_date: 2025-07-22 date_created: 2025-05-23T06:10:53Z date_updated: 2025-05-23T06:11:20Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' language: - iso: eng project: - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '54' name: 'TRR 142 - A: TRR 142 - Project Area A' - _id: '164' grant_number: '231447078' name: 'TRR 142 - A09: TRR 142 - Erzeugung von Drei-Photonen-Zuständen mit On-Chip Pumplichtunterdrückung in topologischen Wellenleitern (A09*)' publication: Proceedings of The 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics status: public title: Enhancement Of Light-matter Interaction In Topological Waveguides And Resonators type: conference user_id: '30525' year: '2025' ... --- _id: '58606' author: - first_name: Albert full_name: Mathew, Albert last_name: Mathew - first_name: Rebecca full_name: Aschwanden, Rebecca last_name: Aschwanden - first_name: Aditya full_name: Tripathi, Aditya last_name: Tripathi - first_name: Piyush full_name: Jangid, Piyush last_name: Jangid - first_name: Basudeb full_name: Sain, Basudeb last_name: Sain - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Sergey full_name: Kruk, Sergey last_name: Kruk citation: ama: Mathew A, Aschwanden R, Tripathi A, et al. Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials. Nano Letters. Published online 2025. doi:10.1021/acs.nanolett.4c06188 apa: Mathew, A., Aschwanden, R., Tripathi, A., Jangid, P., Sain, B., Zentgraf, T., & Kruk, S. (2025). Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials. Nano Letters. https://doi.org/10.1021/acs.nanolett.4c06188 bibtex: '@article{Mathew_Aschwanden_Tripathi_Jangid_Sain_Zentgraf_Kruk_2025, title={Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials}, DOI={10.1021/acs.nanolett.4c06188}, journal={Nano Letters}, publisher={American Chemical Society (ACS)}, author={Mathew, Albert and Aschwanden, Rebecca and Tripathi, Aditya and Jangid, Piyush and Sain, Basudeb and Zentgraf, Thomas and Kruk, Sergey}, year={2025} }' chicago: Mathew, Albert, Rebecca Aschwanden, Aditya Tripathi, Piyush Jangid, Basudeb Sain, Thomas Zentgraf, and Sergey Kruk. “Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials.” Nano Letters, 2025. https://doi.org/10.1021/acs.nanolett.4c06188. ieee: 'A. Mathew et al., “Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials,” Nano Letters, 2025, doi: 10.1021/acs.nanolett.4c06188.' mla: Mathew, Albert, et al. “Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials.” Nano Letters, American Chemical Society (ACS), 2025, doi:10.1021/acs.nanolett.4c06188. short: A. Mathew, R. Aschwanden, A. Tripathi, P. Jangid, B. Sain, T. Zentgraf, S. Kruk, Nano Letters (2025). date_created: 2025-02-12T12:54:41Z date_updated: 2025-02-12T13:02:21Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1021/acs.nanolett.4c06188 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2501.11920 oa: '1' project: - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '54' name: 'TRR 142 - A: TRR 142 - Project Area A' - _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*)' - _id: '65' grant_number: '231447078' name: 'TRR 142 - A08: TRR 142 - Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten (A08)' publication: Nano Letters publication_identifier: issn: - 1530-6984 - 1530-6992 publication_status: published publisher: American Chemical Society (ACS) status: public title: Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials type: journal_article user_id: '30525' year: '2025' ... --- _id: '58642' abstract: - lang: eng text: We present a cost-effective self-assembly method to fabricate low-density dimer NPs in an NPoM architecture, using the M13 phage as a spacer layer. This will enable the development of dynamic plasmonic devices and advanced sensing applications. article_type: original author: - first_name: Vasanthan full_name: Devaraj, Vasanthan id: '103814' last_name: Devaraj - first_name: Isaac Azahel full_name: Ruiz Alvarado, Isaac Azahel id: '79462' last_name: Ruiz Alvarado orcid: 0000-0002-4710-1170 - first_name: Jong-Min full_name: Lee, Jong-Min last_name: Lee - first_name: Jin-Woo full_name: Oh, Jin-Woo last_name: Oh - 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: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 citation: ama: Devaraj V, Ruiz Alvarado IA, Lee J-M, et al. Self-assembly of isolated plasmonic dimers with sub-5 nm gaps on a metallic mirror. Nanoscale Horizons. 2025;10:537-548. doi:10.1039/d4nh00546e apa: Devaraj, V., Ruiz Alvarado, I. A., Lee, J.-M., Oh, J.-W., Gerstmann, U., Schmidt, W. G., & Zentgraf, T. (2025). Self-assembly of isolated plasmonic dimers with sub-5 nm gaps on a metallic mirror. Nanoscale Horizons, 10, 537–548. https://doi.org/10.1039/d4nh00546e bibtex: '@article{Devaraj_Ruiz Alvarado_Lee_Oh_Gerstmann_Schmidt_Zentgraf_2025, title={Self-assembly of isolated plasmonic dimers with sub-5 nm gaps on a metallic mirror}, volume={10}, DOI={10.1039/d4nh00546e}, journal={Nanoscale Horizons}, publisher={Royal Society of Chemistry (RSC)}, author={Devaraj, Vasanthan and Ruiz Alvarado, Isaac Azahel and Lee, Jong-Min and Oh, Jin-Woo and Gerstmann, Uwe and Schmidt, Wolf Gero and Zentgraf, Thomas}, year={2025}, pages={537–548} }' chicago: 'Devaraj, Vasanthan, Isaac Azahel Ruiz Alvarado, Jong-Min Lee, Jin-Woo Oh, Uwe Gerstmann, Wolf Gero Schmidt, and Thomas Zentgraf. “Self-Assembly of Isolated Plasmonic Dimers with Sub-5 Nm Gaps on a Metallic Mirror.” Nanoscale Horizons 10 (2025): 537–48. https://doi.org/10.1039/d4nh00546e.' ieee: 'V. Devaraj et al., “Self-assembly of isolated plasmonic dimers with sub-5 nm gaps on a metallic mirror,” Nanoscale Horizons, vol. 10, pp. 537–548, 2025, doi: 10.1039/d4nh00546e.' mla: Devaraj, Vasanthan, et al. “Self-Assembly of Isolated Plasmonic Dimers with Sub-5 Nm Gaps on a Metallic Mirror.” Nanoscale Horizons, vol. 10, Royal Society of Chemistry (RSC), 2025, pp. 537–48, doi:10.1039/d4nh00546e. short: V. Devaraj, I.A. Ruiz Alvarado, J.-M. Lee, J.-W. Oh, U. Gerstmann, W.G. Schmidt, T. Zentgraf, Nanoscale Horizons 10 (2025) 537–548. date_created: 2025-02-14T08:13:10Z date_updated: 2025-07-09T14:04:39Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' - _id: '35' - _id: '295' - _id: '170' - _id: '429' - _id: '27' doi: 10.1039/d4nh00546e intvolume: ' 10' language: - iso: eng page: 537-548 project: - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '168' grant_number: '231447078' name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '445' grant_number: '367360193' name: Hochleistungsrechner Noctua in Paderborn - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Nanoscale Horizons publication_identifier: issn: - 2055-6756 - 2055-6764 publication_status: published publisher: Royal Society of Chemistry (RSC) quality_controlled: '1' status: public title: Self-assembly of isolated plasmonic dimers with sub-5 nm gaps on a metallic mirror type: journal_article user_id: '16199' volume: 10 year: '2025' ... --- _id: '62286' abstract: - lang: eng text: Optical tweezer arrays of laser-cooled and individually controlled particles have revolutionized atomic, molecular, and optical physics. They afford exquisite capabilities for applications in quantum simulation of many-body physics, quantum computation, and sensing. Underlying this development is the technical maturity of generating scalable optical beams, enabled by active components and a high numerical aperture objective. However, such a complex combination of bulk optics outside the vacuum chamber is very sensitive to any vibration and drift. Here, we demonstrate the generation of a 3 × 3 static tweezer array with a single chip-scale multifunctional metasurface element in vacuum, replacing the meter-long free space optics. Fluorescence counts on the camera validate the successful trapping of the atomic ensemble array and showcase a promising strategy for integrated photonics with cold atom systems. The introduction of a polarization independent dual-wavelength metasurface significantly enhances fluorescence collection efficiency while reducing experimental complexity. This approach paves the way for scalable neutral atom platforms and offers a compelling route towards the realization of next generation quantum metasurfaces. article_number: '51085' article_type: original author: - first_name: Donghao full_name: Li, Donghao last_name: Li - first_name: Qiming full_name: Liao, Qiming last_name: Liao - first_name: Beining full_name: Xu, Beining last_name: Xu - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Emmanuel full_name: Narvaez Castaneda, Emmanuel last_name: Narvaez Castaneda - first_name: Yaoting full_name: Zhou, Yaoting last_name: Zhou - first_name: Keyu full_name: Qin, Keyu last_name: Qin - first_name: Zhongxiao full_name: Xu, Zhongxiao last_name: Xu - first_name: Heng full_name: Shen, Heng last_name: Shen - first_name: Lingling full_name: Huang, Lingling last_name: Huang citation: ama: Li D, Liao Q, Xu B, et al. In vacuum metasurface for optical microtrap array. Optics Express. 2025;33(24). doi:10.1364/oe.580201 apa: Li, D., Liao, Q., Xu, B., Zentgraf, T., Narvaez Castaneda, E., Zhou, Y., Qin, K., Xu, Z., Shen, H., & Huang, L. (2025). In vacuum metasurface for optical microtrap array. Optics Express, 33(24), Article 51085. https://doi.org/10.1364/oe.580201 bibtex: '@article{Li_Liao_Xu_Zentgraf_Narvaez Castaneda_Zhou_Qin_Xu_Shen_Huang_2025, title={In vacuum metasurface for optical microtrap array}, volume={33}, DOI={10.1364/oe.580201}, number={2451085}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Li, Donghao and Liao, Qiming and Xu, Beining and Zentgraf, Thomas and Narvaez Castaneda, Emmanuel and Zhou, Yaoting and Qin, Keyu and Xu, Zhongxiao and Shen, Heng and Huang, Lingling}, year={2025} }' chicago: Li, Donghao, Qiming Liao, Beining Xu, Thomas Zentgraf, Emmanuel Narvaez Castaneda, Yaoting Zhou, Keyu Qin, Zhongxiao Xu, Heng Shen, and Lingling Huang. “In Vacuum Metasurface for Optical Microtrap Array.” Optics Express 33, no. 24 (2025). https://doi.org/10.1364/oe.580201. ieee: 'D. Li et al., “In vacuum metasurface for optical microtrap array,” Optics Express, vol. 33, no. 24, Art. no. 51085, 2025, doi: 10.1364/oe.580201.' mla: Li, Donghao, et al. “In Vacuum Metasurface for Optical Microtrap Array.” Optics Express, vol. 33, no. 24, 51085, Optica Publishing Group, 2025, doi:10.1364/oe.580201. short: D. Li, Q. Liao, B. Xu, T. Zentgraf, E. Narvaez Castaneda, Y. Zhou, K. Qin, Z. Xu, H. Shen, L. Huang, Optics Express 33 (2025). date_created: 2025-11-24T06:31:17Z date_updated: 2025-11-24T06:35:19Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1364/oe.580201 intvolume: ' 33' issue: '24' language: - iso: eng main_file_link: - open_access: '1' url: https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-24-51085 oa: '1' publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group quality_controlled: '1' status: public title: In vacuum metasurface for optical microtrap array type: journal_article user_id: '30525' volume: 33 year: '2025' ... --- _id: '61352' author: - first_name: Vasanthan full_name: Devaraj, Vasanthan id: '103814' last_name: Devaraj - first_name: Isaac Azahel full_name: Ruiz Alvarado, Isaac Azahel id: '79462' last_name: Ruiz Alvarado orcid: 0000-0002-4710-1170 - first_name: Jongmin full_name: Lee, Jongmin last_name: Lee - first_name: Jin-Woo full_name: Oh, Jin-Woo last_name: Oh - 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: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 citation: ama: 'Devaraj V, Ruiz Alvarado IA, Lee J, et al. Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly. In: 2025 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE; 2025. doi:10.1109/cleo/europe-eqec65582.2025.11109762' apa: Devaraj, V., Ruiz Alvarado, I. A., Lee, J., Oh, J.-W., Gerstmann, U., Schmidt, W. G., & Zentgraf, T. (2025). Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly. 2025 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC). https://doi.org/10.1109/cleo/europe-eqec65582.2025.11109762 bibtex: '@inproceedings{Devaraj_Ruiz Alvarado_Lee_Oh_Gerstmann_Schmidt_Zentgraf_2025, title={Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly}, DOI={10.1109/cleo/europe-eqec65582.2025.11109762}, booktitle={2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)}, publisher={IEEE}, author={Devaraj, Vasanthan and Ruiz Alvarado, Isaac Azahel and Lee, Jongmin and Oh, Jin-Woo and Gerstmann, Uwe and Schmidt, Wolf Gero and Zentgraf, Thomas}, year={2025} }' chicago: Devaraj, Vasanthan, Isaac Azahel Ruiz Alvarado, Jongmin Lee, Jin-Woo Oh, Uwe Gerstmann, Wolf Gero Schmidt, and Thomas Zentgraf. “Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly.” In 2025 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2025. https://doi.org/10.1109/cleo/europe-eqec65582.2025.11109762. ieee: 'V. Devaraj et al., “Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly,” 2025, doi: 10.1109/cleo/europe-eqec65582.2025.11109762.' mla: Devaraj, Vasanthan, et al. “Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly.” 2025 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC), IEEE, 2025, doi:10.1109/cleo/europe-eqec65582.2025.11109762. short: 'V. Devaraj, I.A. Ruiz Alvarado, J. Lee, J.-W. Oh, U. Gerstmann, W.G. Schmidt, T. Zentgraf, in: 2025 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC), IEEE, 2025.' date_created: 2025-09-18T11:09:30Z date_updated: 2025-12-05T13:32:18Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '289' - _id: '35' - _id: '230' - _id: '790' doi: 10.1109/cleo/europe-eqec65582.2025.11109762 language: - iso: eng publication: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) publication_status: published publisher: IEEE status: public title: Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly type: conference user_id: '16199' year: '2025' ... --- _id: '51519' author: - first_name: Tie Jun full_name: Cui, Tie Jun last_name: Cui - first_name: Shuang full_name: Zhang, Shuang last_name: Zhang - first_name: Andrea full_name: Alu, Andrea last_name: Alu - first_name: Martin full_name: Wegener, Martin last_name: Wegener - first_name: John full_name: Pendry, John last_name: Pendry - first_name: Jie full_name: Luo, Jie last_name: Luo - first_name: Yun full_name: Lai, Yun last_name: Lai - first_name: Zuojia full_name: Wang, Zuojia last_name: Wang - first_name: Xiao full_name: Lin, Xiao last_name: Lin - first_name: Hongsheng full_name: Chen, Hongsheng last_name: Chen - first_name: Ping full_name: Chen, Ping last_name: Chen - first_name: Rui-Xin full_name: Wu, Rui-Xin last_name: Wu - first_name: Yuhang full_name: Yin, Yuhang last_name: Yin - first_name: Pengfei full_name: Zhao, Pengfei last_name: Zhao - first_name: Huanyang full_name: Chen, Huanyang last_name: Chen - first_name: Yue full_name: Li, Yue last_name: Li - first_name: Ziheng full_name: Zhou, Ziheng last_name: Zhou - first_name: Nader full_name: Engheta, Nader last_name: Engheta - first_name: V. S. full_name: Asadchy, V. S. last_name: Asadchy - first_name: Constantin full_name: Simovski, Constantin last_name: Simovski - first_name: Sergei A full_name: Tretyakov, Sergei A last_name: Tretyakov - first_name: Biao full_name: Yang, Biao last_name: Yang - first_name: Sawyer D. full_name: Campbell, Sawyer D. last_name: Campbell - first_name: Yang full_name: Hao, Yang last_name: Hao - first_name: Douglas H full_name: Werner, Douglas H last_name: Werner - first_name: Shulin full_name: Sun, Shulin last_name: Sun - first_name: Lei full_name: Zhou, Lei last_name: Zhou - first_name: Su full_name: Xu, Su last_name: Xu - first_name: Hong-Bo full_name: Sun, Hong-Bo last_name: Sun - first_name: Zhou full_name: Zhou, Zhou last_name: Zhou - first_name: Zile full_name: Li, Zile last_name: Li - first_name: Guoxing full_name: Zheng, Guoxing last_name: Zheng - first_name: Xianzhong full_name: Chen, Xianzhong last_name: Chen - first_name: Tao full_name: Li, Tao last_name: Li - first_name: Shi-Ning full_name: Zhu, Shi-Ning last_name: Zhu - first_name: Junxiao full_name: Zhou, Junxiao last_name: Zhou - first_name: Junxiang full_name: Zhao, Junxiang last_name: Zhao - first_name: Zhaowei full_name: Liu, Zhaowei last_name: Liu - first_name: Yuchao full_name: Zhang, Yuchao last_name: Zhang - first_name: Qiming full_name: Zhang, Qiming last_name: Zhang - first_name: Min full_name: Gu, Min last_name: Gu - first_name: Shumin full_name: Xiao, Shumin last_name: Xiao - first_name: Yongmin full_name: Liu, Yongmin last_name: Liu - first_name: Xiaoyu full_name: Zhang, Xiaoyu last_name: Zhang - first_name: Yutao full_name: Tang, Yutao last_name: Tang - first_name: Guixin full_name: Li, Guixin last_name: Li - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Kirill full_name: Koshelev, Kirill last_name: Koshelev - first_name: Yuri S. full_name: Kivshar, Yuri S. last_name: Kivshar - first_name: Xin full_name: Li, Xin last_name: Li - first_name: Trevon full_name: Badloe, Trevon last_name: Badloe - first_name: Lingling full_name: Huang, Lingling last_name: Huang - first_name: Junsuk full_name: Rho, Junsuk last_name: Rho - first_name: Shuming full_name: Wang, Shuming last_name: Wang - first_name: Din Ping full_name: Tsai, Din Ping last_name: Tsai - first_name: A. Yu. full_name: Bykov, A. Yu. last_name: Bykov - first_name: Alexey V full_name: Krasavin, Alexey V last_name: Krasavin - first_name: Anatoly V full_name: Zayats, Anatoly V last_name: Zayats - first_name: Cormac full_name: McDonnell, Cormac last_name: McDonnell - first_name: Tal full_name: Ellenbogen, Tal last_name: Ellenbogen - first_name: Xiangang full_name: Luo, Xiangang last_name: Luo - first_name: Mingbo full_name: Pu, Mingbo last_name: Pu - first_name: Francisco J full_name: Garcia-Vidal, Francisco J last_name: Garcia-Vidal - first_name: Liangliang full_name: Liu, Liangliang last_name: Liu - first_name: Zhuo full_name: Li, Zhuo last_name: Li - first_name: Wenxuan full_name: Tang, Wenxuan last_name: Tang - first_name: Hui Feng full_name: Ma, Hui Feng last_name: Ma - first_name: Jingjing full_name: Zhang, Jingjing last_name: Zhang - first_name: Yu full_name: Luo, Yu last_name: Luo - first_name: Xuanru full_name: Zhang, Xuanru last_name: Zhang - first_name: Hao Chi full_name: Zhang, Hao Chi last_name: Zhang - first_name: Pei Hang full_name: He, Pei Hang last_name: He - first_name: Le Peng full_name: Zhang, Le Peng last_name: Zhang - first_name: Xiang full_name: Wan, Xiang last_name: Wan - first_name: Haotian full_name: Wu, Haotian last_name: Wu - first_name: Shuo full_name: Liu, Shuo last_name: Liu - first_name: Wei Xiang full_name: Jiang, Wei Xiang last_name: Jiang - first_name: Xin Ge full_name: Zhang, Xin Ge last_name: Zhang - first_name: Chengwei full_name: Qiu, Chengwei last_name: Qiu - first_name: Qian full_name: Ma, Qian last_name: Ma - first_name: Che full_name: Liu, Che last_name: Liu - first_name: Long full_name: Li, Long last_name: Li - first_name: Jiaqi full_name: Han, Jiaqi last_name: Han - first_name: Lianlin full_name: Li, Lianlin last_name: Li - first_name: Michele full_name: Cotrufo, Michele last_name: Cotrufo - first_name: Christophe full_name: Caloz, Christophe last_name: Caloz - first_name: Z.-L. full_name: Deck-Léger, Z.-L. last_name: Deck-Léger - first_name: A. full_name: Bahrami, A. last_name: Bahrami - first_name: O. full_name: Céspedes, O. last_name: Céspedes - first_name: Emanuele full_name: Galiffi, Emanuele last_name: Galiffi - first_name: P. A. full_name: Huidobro, P. A. last_name: Huidobro - first_name: Qiang full_name: Cheng, Qiang last_name: Cheng - first_name: Jun Yan full_name: Dai, Jun Yan last_name: Dai - first_name: Jun Cheng full_name: Ke, Jun Cheng last_name: Ke - first_name: Lei full_name: Zhang, Lei last_name: Zhang - first_name: Vincenzo full_name: Galdi, Vincenzo last_name: Galdi - first_name: Marco full_name: Di Renzo, Marco last_name: Di Renzo citation: ama: 'Cui TJ, Zhang S, Alu A, et al. Roadmap on electromagnetic metamaterials and metasurfaces. Journal of Physics: Photonics. Published online 2024. doi:10.1088/2515-7647/ad1a3b' apa: 'Cui, T. J., Zhang, S., Alu, A., Wegener, M., Pendry, J., Luo, J., Lai, Y., Wang, Z., Lin, X., Chen, H., Chen, P., Wu, R.-X., Yin, Y., Zhao, P., Chen, H., Li, Y., Zhou, Z., Engheta, N., Asadchy, V. S., … Di Renzo, M. (2024). Roadmap on electromagnetic metamaterials and metasurfaces. Journal of Physics: Photonics. https://doi.org/10.1088/2515-7647/ad1a3b' bibtex: '@article{Cui_Zhang_Alu_Wegener_Pendry_Luo_Lai_Wang_Lin_Chen_et al._2024, title={Roadmap on electromagnetic metamaterials and metasurfaces}, DOI={10.1088/2515-7647/ad1a3b}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Cui, Tie Jun and Zhang, Shuang and Alu, Andrea and Wegener, Martin and Pendry, John and Luo, Jie and Lai, Yun and Wang, Zuojia and Lin, Xiao and Chen, Hongsheng and et al.}, year={2024} }' chicago: 'Cui, Tie Jun, Shuang Zhang, Andrea Alu, Martin Wegener, John Pendry, Jie Luo, Yun Lai, et al. “Roadmap on Electromagnetic Metamaterials and Metasurfaces.” Journal of Physics: Photonics, 2024. https://doi.org/10.1088/2515-7647/ad1a3b.' ieee: 'T. J. Cui et al., “Roadmap on electromagnetic metamaterials and metasurfaces,” Journal of Physics: Photonics, 2024, doi: 10.1088/2515-7647/ad1a3b.' mla: 'Cui, Tie Jun, et al. “Roadmap on Electromagnetic Metamaterials and Metasurfaces.” Journal of Physics: Photonics, IOP Publishing, 2024, doi:10.1088/2515-7647/ad1a3b.' short: 'T.J. Cui, S. Zhang, A. Alu, M. Wegener, J. Pendry, J. Luo, Y. Lai, Z. Wang, X. Lin, H. Chen, P. Chen, R.-X. Wu, Y. Yin, P. Zhao, H. Chen, Y. Li, Z. Zhou, N. Engheta, V.S. Asadchy, C. Simovski, S.A. Tretyakov, B. Yang, S.D. Campbell, Y. Hao, D.H. Werner, S. Sun, L. Zhou, S. Xu, H.-B. Sun, Z. Zhou, Z. Li, G. Zheng, X. Chen, T. Li, S.-N. Zhu, J. Zhou, J. Zhao, Z. Liu, Y. Zhang, Q. Zhang, M. Gu, S. Xiao, Y. Liu, X. Zhang, Y. Tang, G. Li, T. Zentgraf, K. Koshelev, Y.S. Kivshar, X. Li, T. Badloe, L. Huang, J. Rho, S. Wang, D.P. Tsai, A.Yu. Bykov, A.V. Krasavin, A.V. Zayats, C. McDonnell, T. Ellenbogen, X. Luo, M. Pu, F.J. Garcia-Vidal, L. Liu, Z. Li, W. Tang, H.F. Ma, J. Zhang, Y. Luo, X. Zhang, H.C. Zhang, P.H. He, L.P. Zhang, X. Wan, H. Wu, S. Liu, W.X. Jiang, X.G. Zhang, C. Qiu, Q. Ma, C. Liu, L. Li, J. Han, L. Li, M. Cotrufo, C. Caloz, Z.-L. Deck-Léger, A. Bahrami, O. Céspedes, E. Galiffi, P.A. Huidobro, Q. Cheng, J.Y. Dai, J.C. Ke, L. Zhang, V. Galdi, M. Di Renzo, Journal of Physics: Photonics (2024).' date_created: 2024-02-20T06:58:48Z date_updated: 2024-02-20T07:03:00Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1088/2515-7647/ad1a3b keyword: - Electrical and Electronic Engineering - Atomic and Molecular Physics - and Optics - Electronic - Optical and Magnetic Materials language: - iso: eng main_file_link: - open_access: '1' url: https://iopscience.iop.org/article/10.1088/2515-7647/ad1a3b oa: '1' publication: 'Journal of Physics: Photonics' publication_identifier: issn: - 2515-7647 publication_status: published publisher: IOP Publishing status: public title: Roadmap on electromagnetic metamaterials and metasurfaces type: journal_article user_id: '30525' year: '2024' ... --- _id: '60023' author: - first_name: Helene full_name: Wetter, Helene last_name: Wetter - first_name: Wenlong full_name: Gao, Wenlong last_name: Gao - first_name: Falk full_name: Rehberg, Falk last_name: Rehberg - first_name: Jan full_name: Wingenbach, Jan id: '69187' last_name: Wingenbach - 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, Gao W, Rehberg F, Wingenbach J, Schumacher S, Zentgraf T. Dielectric metasurface for wave-vector variant and circular polarization dependent transmission. In: Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics. ; 2024.' apa: Wetter, H., Gao, W., Rehberg, F., Wingenbach, J., Schumacher, S., & Zentgraf, T. (2024). Dielectric metasurface for wave-vector variant and circular polarization dependent transmission. Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics. META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan. bibtex: '@inproceedings{Wetter_Gao_Rehberg_Wingenbach_Schumacher_Zentgraf_2024, title={Dielectric metasurface for wave-vector variant and circular polarization dependent transmission}, booktitle={Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics}, author={Wetter, Helene and Gao, Wenlong and Rehberg, Falk and Wingenbach, Jan and Schumacher, Stefan and Zentgraf, Thomas}, year={2024} }' chicago: Wetter, Helene, Wenlong Gao, Falk Rehberg, Jan Wingenbach, Stefan Schumacher, and Thomas Zentgraf. “Dielectric Metasurface for Wave-Vector Variant and Circular Polarization Dependent Transmission.” In Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2024. ieee: H. Wetter, W. Gao, F. Rehberg, J. Wingenbach, S. Schumacher, and T. Zentgraf, “Dielectric metasurface for wave-vector variant and circular polarization dependent transmission,” presented at the META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan, 2024. mla: Wetter, Helene, et al. “Dielectric Metasurface for Wave-Vector Variant and Circular Polarization Dependent Transmission.” Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2024. short: 'H. Wetter, W. Gao, F. Rehberg, J. Wingenbach, S. Schumacher, T. Zentgraf, in: Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2024.' conference: end_date: 2024-07-19 location: Toyama, Japan name: META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics start_date: 2024-07-16 date_created: 2025-05-23T06:30:36Z date_updated: 2025-05-23T06:34:16Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' language: - iso: eng project: - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '54' name: 'TRR 142 - A: TRR 142 - Project Area A' - _id: '164' grant_number: '231447078' name: 'TRR 142 - A09: TRR 142 - Erzeugung von Drei-Photonen-Zuständen mit On-Chip Pumplichtunterdrückung in topologischen Wellenleitern (A09*)' publication: Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics publication_identifier: issn: - 2429-1390 status: public title: Dielectric metasurface for wave-vector variant and circular polarization dependent transmission type: conference user_id: '30525' year: '2024' ... --- _id: '61255' abstract: - lang: eng text: "Abstract\r\n Topological states have been widely investigated in different types of systems and lattices. In the present work, we report on topological edge states in double-wave (DW) chains, which can be described by a generalized Aubry-André-Harper (AAH) model. For the specific system of a driven-dissipative exciton polariton system we show that in such potential chains, different types of edge states can form. For resonant optical excitation, we further find that the optical nonlinearity leads to a multistability of different edge states. This includes topologically protected edge states evolved directly from individual linear eigenstates as well as additional edge states that originate from nonlinearity-induced localization of bulk states. Extending the system into two dimensions (2D) by stacking horizontal DW chains in the vertical direction, we also create 2D multi-wave lattices. In such 2D lattices multiple Su–Schrieffer–Heeger (SSH) chains appear along the vertical direction. The combination of DW chains in the horizonal and SSH chains in the vertical direction then results in the formation of higher-order topological insulator corner states. Multistable corner states emerge in the nonlinear regime." author: - first_name: Tobias full_name: Schneider, Tobias last_name: Schneider - first_name: Wenlong full_name: Gao, Wenlong id: '78853' last_name: Gao - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - 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: Schneider T, Gao W, Zentgraf T, Schumacher S, Ma X. Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates. Nanophotonics. 2024;13(4):509-518. doi:10.1515/nanoph-2023-0556 apa: Schneider, T., Gao, W., Zentgraf, T., Schumacher, S., & Ma, X. (2024). Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates. Nanophotonics, 13(4), 509–518. https://doi.org/10.1515/nanoph-2023-0556 bibtex: '@article{Schneider_Gao_Zentgraf_Schumacher_Ma_2024, title={Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates}, volume={13}, DOI={10.1515/nanoph-2023-0556}, number={4}, journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Schneider, Tobias and Gao, Wenlong and Zentgraf, Thomas and Schumacher, Stefan and Ma, Xuekai}, year={2024}, pages={509–518} }' chicago: 'Schneider, Tobias, Wenlong Gao, Thomas Zentgraf, Stefan Schumacher, and Xuekai Ma. “Topological Edge and Corner States in Coupled Wave Lattices in Nonlinear Polariton Condensates.” Nanophotonics 13, no. 4 (2024): 509–18. https://doi.org/10.1515/nanoph-2023-0556.' ieee: 'T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, and X. Ma, “Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates,” Nanophotonics, vol. 13, no. 4, pp. 509–518, 2024, doi: 10.1515/nanoph-2023-0556.' mla: Schneider, Tobias, et al. “Topological Edge and Corner States in Coupled Wave Lattices in Nonlinear Polariton Condensates.” Nanophotonics, vol. 13, no. 4, Walter de Gruyter GmbH, 2024, pp. 509–18, doi:10.1515/nanoph-2023-0556. short: T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, X. Ma, Nanophotonics 13 (2024) 509–518. date_created: 2025-09-12T11:19:22Z date_updated: 2025-09-12T11:22:41Z department: - _id: '15' - _id: '170' - _id: '297' - _id: '705' - _id: '35' - _id: '230' - _id: '429' - _id: '27' doi: 10.1515/nanoph-2023-0556 intvolume: ' 13' issue: '4' language: - iso: eng page: 509-518 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _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: '61' name: 'TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit Polaritonen in Mikrokavitäten' - _id: '170' name: 'TRR 142; TP B09: Effiziente Erzeugung mit maßgeschneiderter optischer Phaselage der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen' publication: Nanophotonics publication_identifier: issn: - 2192-8614 publication_status: published publisher: Walter de Gruyter GmbH status: public title: Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates type: journal_article user_id: '16199' volume: 13 year: '2024' ... --- _id: '49607' abstract: - lang: eng text: In this work, we utilize thin dielectric meta-atoms placed on a silver substrate to efficiently enhance and manipulate the third-harmonic generation. We theoretically and experimentally reveal that when the structural symmetry of the meta-atom is incompatible with the lattice symmetry of an array, some generalized nonlinear geometric phases appear, which offers new possibilities for harmonic generation control beyond the accessible symmetries governed by the selection rule. The underlying mechanism is attributed to the modified rotation of the effective principal axis of a dense meta-atom array, where the strong coupling among the units gives rise to a generalized linear geometric phase modulation of the pump light. Therefore, nonlinear geometric phases carried by third-harmonic emissions are the natural result of the wave-mixing process among the modes excited at the fundamental frequency. This mechanism further points out a new strategy to predict the nonlinear geometric phases delivered by the nanostructures according to their linear responses. Our design is simple and efficient and offers alternatives for the nonlinear meta-devices that are capable of flexible photon generation and manipulation. article_type: original author: - first_name: Bingyi full_name: Liu, Bingyi last_name: Liu - first_name: René full_name: Geromel, René last_name: Geromel - first_name: Zhaoxian full_name: Su, Zhaoxian last_name: Su - first_name: Kai full_name: Guo, Kai last_name: Guo - first_name: Yongtian full_name: Wang, Yongtian last_name: Wang - first_name: Zhongyi full_name: Guo, Zhongyi last_name: Guo - 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, Geromel R, Su Z, et al. Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design. ACS Photonics. 2023;10(12):4357-4366. doi:10.1021/acsphotonics.3c01163 apa: Liu, B., Geromel, R., Su, Z., Guo, K., Wang, Y., Guo, Z., Huang, L., & Zentgraf, T. (2023). Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design. ACS Photonics, 10(12), 4357–4366. https://doi.org/10.1021/acsphotonics.3c01163 bibtex: '@article{Liu_Geromel_Su_Guo_Wang_Guo_Huang_Zentgraf_2023, title={Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design}, volume={10}, DOI={10.1021/acsphotonics.3c01163}, number={12}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Liu, Bingyi and Geromel, René and Su, Zhaoxian and Guo, Kai and Wang, Yongtian and Guo, Zhongyi and Huang, Lingling and Zentgraf, Thomas}, year={2023}, pages={4357–4366} }' chicago: 'Liu, Bingyi, René Geromel, Zhaoxian Su, Kai Guo, Yongtian Wang, Zhongyi Guo, Lingling Huang, and Thomas Zentgraf. “Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design.” ACS Photonics 10, no. 12 (2023): 4357–66. https://doi.org/10.1021/acsphotonics.3c01163.' ieee: 'B. Liu et al., “Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design,” ACS Photonics, vol. 10, no. 12, pp. 4357–4366, 2023, doi: 10.1021/acsphotonics.3c01163.' mla: Liu, Bingyi, et al. “Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design.” ACS Photonics, vol. 10, no. 12, American Chemical Society (ACS), 2023, pp. 4357–66, doi:10.1021/acsphotonics.3c01163. short: B. Liu, R. Geromel, Z. Su, K. Guo, Y. Wang, Z. Guo, L. Huang, T. Zentgraf, ACS Photonics 10 (2023) 4357–4366. date_created: 2023-12-13T14:11:41Z date_updated: 2024-04-16T06:47:40Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1021/acsphotonics.3c01163 funded_apc: '1' intvolume: ' 10' issue: '12' keyword: - Electrical and Electronic Engineering - Atomic and Molecular Physics - and Optics - Biotechnology - Electronic - Optical and Magnetic Materials language: - iso: eng main_file_link: - open_access: '1' url: https://pubs.acs.org/doi/full/10.1021/acsphotonics.3c01163 oa: '1' page: 4357-4366 project: - _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' - _id: '53' grant_number: '231447078' name: 'TRR 142: 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: Nonlinear Dielectric Geometric-Phase Metasurface with Simultaneous Structure and Lattice Symmetry Design type: journal_article user_id: '30525' volume: 10 year: '2023' ... --- _id: '43421' abstract: - lang: eng text: The achievement of a flat metasurface has realized extraordinary control over light–matter interaction at the nanoscale, enabling widespread use in imaging, holography, and biophotonics. However, three-dimensional metasurfaces with the potential to provide additional light–matter manipulation flexibility attract only little interest. Here, we demonstrate a three-dimensional metasurface scheme capable of providing dual phase control through out-of-plane plasmonic resonance of L-shape antennas. Under circularly polarized excitation at a specific wavelength, the L-shape antennas with rotating orientation angle act as spatially variant three-dimensional tilted dipoles and are able to generate desire phase delay for different polarization components. Generalized Snell's law is achieved for both in-plane and out-of-plane dipole components through arranging such L-shape antennas into arrays. These three-dimensional metasurfaces suggest a route for wavefront modulation and a variety of nanophotonic applications. article_number: '141702' article_type: original author: - first_name: Tianyou full_name: Li, Tianyou last_name: Li - first_name: Yanjie full_name: Chen, Yanjie last_name: Chen - first_name: Yongtian full_name: Wang, Yongtian last_name: Wang - 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: Li T, Chen Y, Wang Y, Zentgraf T, Huang L. Three-dimensional dipole momentum analog based on L-shape metasurface. Applied Physics Letters. 2023;122(14). doi:10.1063/5.0142389 apa: Li, T., Chen, Y., Wang, Y., Zentgraf, T., & Huang, L. (2023). Three-dimensional dipole momentum analog based on L-shape metasurface. Applied Physics Letters, 122(14), Article 141702. https://doi.org/10.1063/5.0142389 bibtex: '@article{Li_Chen_Wang_Zentgraf_Huang_2023, title={Three-dimensional dipole momentum analog based on L-shape metasurface}, volume={122}, DOI={10.1063/5.0142389}, number={14141702}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Li, Tianyou and Chen, Yanjie and Wang, Yongtian and Zentgraf, Thomas and Huang, Lingling}, year={2023} }' chicago: Li, Tianyou, Yanjie Chen, Yongtian Wang, Thomas Zentgraf, and Lingling Huang. “Three-Dimensional Dipole Momentum Analog Based on L-Shape Metasurface.” Applied Physics Letters 122, no. 14 (2023). https://doi.org/10.1063/5.0142389. ieee: 'T. Li, Y. Chen, Y. Wang, T. Zentgraf, and L. Huang, “Three-dimensional dipole momentum analog based on L-shape metasurface,” Applied Physics Letters, vol. 122, no. 14, Art. no. 141702, 2023, doi: 10.1063/5.0142389.' mla: Li, Tianyou, et al. “Three-Dimensional Dipole Momentum Analog Based on L-Shape Metasurface.” Applied Physics Letters, vol. 122, no. 14, 141702, AIP Publishing, 2023, doi:10.1063/5.0142389. short: T. Li, Y. Chen, Y. Wang, T. Zentgraf, L. Huang, Applied Physics Letters 122 (2023). date_created: 2023-04-06T06:01:06Z date_updated: 2023-04-06T06:02:58Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1063/5.0142389 intvolume: ' 122' issue: '14' keyword: - Physics and Astronomy (miscellaneous) language: - iso: eng publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 - 1077-3118 publication_status: published publisher: AIP Publishing quality_controlled: '1' status: public title: Three-dimensional dipole momentum analog based on L-shape metasurface type: journal_article user_id: '30525' volume: 122 year: '2023' ... --- _id: '44097' abstract: - lang: eng text: We present strong enhancement of third harmonic generation in an amorphous silicon metasurface consisting of elliptical nano resonators. We show that this enhancement originates from a new type of multi-mode Fano mechanism. These ‘Super-Fano’ resonances are investigated numerically in great detail using full-wave simulations. The theoretically predicted behavior of the metasurface is experimentally verified by linear and nonlinear transmission spectroscopy. Moreover, quantitative nonlinear measurements are performed, in which an absolute conversion efficiency as high as ηmax ≈ 2.8 × 10−7 a peak power intensity of 1.2 GW cm−2 is found. Compared to an unpatterned silicon film of the same thickness amplification factors of up to ~900 are demonstrated. Our results pave the way to exploiting a strong Fano-type multi-mode coupling in metasurfaces for high THG in potential applications. article_type: original author: - first_name: David full_name: Hähnel, David last_name: Hähnel - first_name: Christian full_name: Golla, Christian last_name: Golla - first_name: Maximilian full_name: Albert, Maximilian last_name: Albert - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 citation: ama: 'Hähnel D, Golla C, Albert M, et al. A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces. Light: Science & Applications. 2023;12(1):97. doi:https://doi.org/10.1038/s41377-023-01134-1' apa: 'Hähnel, D., Golla, C., Albert, M., Zentgraf, T., Myroshnychenko, V., Förstner, J., & Meier, C. (2023). A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces. Light: Science & Applications, 12(1), 97. https://doi.org/10.1038/s41377-023-01134-1' bibtex: '@article{Hähnel_Golla_Albert_Zentgraf_Myroshnychenko_Förstner_Meier_2023, title={A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces}, volume={12}, DOI={https://doi.org/10.1038/s41377-023-01134-1}, number={1}, journal={Light: Science & Applications}, publisher={Springer Nature}, author={Hähnel, David and Golla, Christian and Albert, Maximilian and Zentgraf, Thomas and Myroshnychenko, Viktor and Förstner, Jens and Meier, Cedrik}, year={2023}, pages={97} }' chicago: 'Hähnel, David, Christian Golla, Maximilian Albert, Thomas Zentgraf, Viktor Myroshnychenko, Jens Förstner, and Cedrik Meier. “A Multi-Mode Super-Fano Mechanism for Enhanced Third Harmonic Generation in Silicon Metasurfaces.” Light: Science & Applications 12, no. 1 (2023): 97. https://doi.org/10.1038/s41377-023-01134-1.' ieee: 'D. Hähnel et al., “A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces,” Light: Science & Applications, vol. 12, no. 1, p. 97, 2023, doi: https://doi.org/10.1038/s41377-023-01134-1.' mla: 'Hähnel, David, et al. “A Multi-Mode Super-Fano Mechanism for Enhanced Third Harmonic Generation in Silicon Metasurfaces.” Light: Science & Applications, vol. 12, no. 1, Springer Nature, 2023, p. 97, doi:https://doi.org/10.1038/s41377-023-01134-1.' short: 'D. Hähnel, C. Golla, M. Albert, T. Zentgraf, V. Myroshnychenko, J. Förstner, C. Meier, Light: Science & Applications 12 (2023) 97.' date_created: 2023-04-21T09:45:07Z date_updated: 2023-04-21T10:04:05Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: https://doi.org/10.1038/s41377-023-01134-1 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2023-04-21T10:00:27Z date_updated: 2023-04-21T10:00:27Z file_id: '44098' file_name: 2023-04 Hähnel - LSA - Multimode Fano THG.pdf file_size: 2088874 relation: main_file - access_level: open_access content_type: application/pdf creator: fossie date_created: 2023-04-21T10:03:30Z date_updated: 2023-04-21T10:03:30Z file_id: '44099' file_name: 2023-04 Hähnel - LSA - Multimode Fano THG (supplementary information).pdf file_size: 986743 relation: supplementary_material file_date_updated: 2023-04-21T10:03:30Z has_accepted_license: '1' intvolume: ' 12' issue: '1' keyword: - tet_topic_meta language: - iso: eng oa: '1' page: '97' publication: 'Light: Science & Applications' publication_identifier: issn: - 2047-7538 publication_status: published publisher: Springer Nature quality_controlled: '1' status: public title: A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces type: journal_article user_id: '158' volume: 12 year: '2023' ... --- _id: '44044' abstract: - lang: eng text: "Dispersion is present in every optical setup and is often an undesired effect, especially in nonlinear-optical experiments where ultrashort laser pulses are needed. Typically, bulky pulse compressors consisting of gratings or prisms are used\r\nto address this issue by precompensating the dispersion of the optical components. However, these devices are only able to compensate for a part of the dispersion (second-order dispersion). Here, we present a compact pulse-shaping device that uses plasmonic metasurfaces to apply an arbitrarily designed spectral phase delay allowing for a full dispersion control. Furthermore, with specific phase encodings, this device can be used to temporally reshape the incident laser pulses into more complex pulse forms such as a double pulse. We verify the performance of our device by using an SHG-FROG measurement setup together with a retrieval algorithm to extract the dispersion that our device applies to an incident laser pulse." article_type: original author: - first_name: René full_name: Geromel, René last_name: Geromel - first_name: Philip full_name: Georgi, Philip last_name: Georgi - first_name: Maximilian full_name: Protte, Maximilian id: '46170' last_name: Protte - first_name: Shiwei full_name: Lei, Shiwei last_name: Lei - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley - 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: Geromel R, Georgi P, Protte M, et al. Compact Metasurface-Based Optical Pulse-Shaping Device. Nano Letters. 2023;23(8):3196-3201. doi:10.1021/acs.nanolett.2c04980 apa: Geromel, R., Georgi, P., Protte, M., Lei, S., Bartley, T., Huang, L., & Zentgraf, T. (2023). Compact Metasurface-Based Optical Pulse-Shaping Device. Nano Letters, 23(8), 3196–3201. https://doi.org/10.1021/acs.nanolett.2c04980 bibtex: '@article{Geromel_Georgi_Protte_Lei_Bartley_Huang_Zentgraf_2023, title={Compact Metasurface-Based Optical Pulse-Shaping Device}, volume={23}, DOI={10.1021/acs.nanolett.2c04980}, number={8}, journal={Nano Letters}, publisher={American Chemical Society (ACS)}, author={Geromel, René and Georgi, Philip and Protte, Maximilian and Lei, Shiwei and Bartley, Tim and Huang, Lingling and Zentgraf, Thomas}, year={2023}, pages={3196–3201} }' chicago: 'Geromel, René, Philip Georgi, Maximilian Protte, Shiwei Lei, Tim Bartley, Lingling Huang, and Thomas Zentgraf. “Compact Metasurface-Based Optical Pulse-Shaping Device.” Nano Letters 23, no. 8 (2023): 3196–3201. https://doi.org/10.1021/acs.nanolett.2c04980.' ieee: 'R. Geromel et al., “Compact Metasurface-Based Optical Pulse-Shaping Device,” Nano Letters, vol. 23, no. 8, pp. 3196–3201, 2023, doi: 10.1021/acs.nanolett.2c04980.' mla: Geromel, René, et al. “Compact Metasurface-Based Optical Pulse-Shaping Device.” Nano Letters, vol. 23, no. 8, American Chemical Society (ACS), 2023, pp. 3196–201, doi:10.1021/acs.nanolett.2c04980. short: R. Geromel, P. Georgi, M. Protte, S. Lei, T. Bartley, L. Huang, T. Zentgraf, Nano Letters 23 (2023) 3196–3201. date_created: 2023-04-18T05:47:22Z date_updated: 2023-05-12T11:17:51Z ddc: - '530' department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1021/acs.nanolett.2c04980 file: - access_level: closed content_type: application/pdf creator: zentgraf date_created: 2023-04-18T05:50:19Z date_updated: 2023-04-18T05:50:19Z file_id: '44045' file_name: acs.nanolett.2c04980.pdf file_size: 1315966 relation: main_file success: 1 file_date_updated: 2023-04-18T05:50:19Z funded_apc: '1' has_accepted_license: '1' intvolume: ' 23' issue: '8' keyword: - Mechanical Engineering - Condensed Matter Physics - General Materials Science - General Chemistry - Bioengineering language: - iso: eng main_file_link: - open_access: '1' url: https://pubs.acs.org/doi/full/10.1021/acs.nanolett.2c04980 oa: '1' page: 3196 - 3201 project: - _id: '53' name: 'TRR 142: TRR 142' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '170' name: 'TRR 142 - B09: TRR 142 - Subproject B09' - _id: '171' name: 'TRR 142 - C07: TRR 142 - Subproject C07' - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' publication: Nano Letters publication_identifier: issn: - 1530-6984 - 1530-6992 publication_status: published publisher: American Chemical Society (ACS) quality_controlled: '1' status: public title: Compact Metasurface-Based Optical Pulse-Shaping Device type: journal_article user_id: '30525' volume: 23 year: '2023' ... --- _id: '45868' abstract: - lang: eng text: Perfect vector vortex beams (PVVBs) have attracted considerable interest due to their peculiar optical features. PVVBs are typically generated through the superposition of perfect vortex beams, which suffer from the limited number of topological charges (TCs). Furthermore, dynamic control of PVVBs is desirable and has not been reported. We propose and experimentally demonstrate hybrid grafted perfect vector vortex beams (GPVVBs) and their dynamic control. Hybrid GPVVBs are generated through the superposition of grafted perfect vortex beams with a multifunctional metasurface. The generated hybrid GPVVBs possess spatially variant rates of polarization change due to the involvement of more TCs. Each hybrid GPVVB includes different GPVVBs in the same beam, adding more design flexibility. Moreover, these beams are dynamically controlled with a rotating half waveplate. The generated dynamic GPVVBs may find applications in the fields where dynamic control is in high demand, including optical encryption, dense data communication, and multiple particle manipulation. article_number: '3915' author: - first_name: Hammad full_name: Ahmed, Hammad last_name: Ahmed - first_name: Muhammad Afnan full_name: Ansari, Muhammad Afnan last_name: Ansari - first_name: Yan full_name: Li, Yan last_name: Li - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Muhammad Qasim full_name: Mehmood, Muhammad Qasim last_name: Mehmood - first_name: Xianzhong full_name: Chen, Xianzhong last_name: Chen citation: ama: Ahmed H, Ansari MA, Li Y, Zentgraf T, Mehmood MQ, Chen X. Dynamic control of hybrid grafted perfect vector vortex beams. Nature Communications. 2023;14(1). doi:10.1038/s41467-023-39599-8 apa: Ahmed, H., Ansari, M. A., Li, Y., Zentgraf, T., Mehmood, M. Q., & Chen, X. (2023). Dynamic control of hybrid grafted perfect vector vortex beams. Nature Communications, 14(1), Article 3915. https://doi.org/10.1038/s41467-023-39599-8 bibtex: '@article{Ahmed_Ansari_Li_Zentgraf_Mehmood_Chen_2023, title={Dynamic control of hybrid grafted perfect vector vortex beams}, volume={14}, DOI={10.1038/s41467-023-39599-8}, number={13915}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Ahmed, Hammad and Ansari, Muhammad Afnan and Li, Yan and Zentgraf, Thomas and Mehmood, Muhammad Qasim and Chen, Xianzhong}, year={2023} }' chicago: Ahmed, Hammad, Muhammad Afnan Ansari, Yan Li, Thomas Zentgraf, Muhammad Qasim Mehmood, and Xianzhong Chen. “Dynamic Control of Hybrid Grafted Perfect Vector Vortex Beams.” Nature Communications 14, no. 1 (2023). https://doi.org/10.1038/s41467-023-39599-8. ieee: 'H. Ahmed, M. A. Ansari, Y. Li, T. Zentgraf, M. Q. Mehmood, and X. Chen, “Dynamic control of hybrid grafted perfect vector vortex beams,” Nature Communications, vol. 14, no. 1, Art. no. 3915, 2023, doi: 10.1038/s41467-023-39599-8.' mla: Ahmed, Hammad, et al. “Dynamic Control of Hybrid Grafted Perfect Vector Vortex Beams.” Nature Communications, vol. 14, no. 1, 3915, Springer Science and Business Media LLC, 2023, doi:10.1038/s41467-023-39599-8. short: H. Ahmed, M.A. Ansari, Y. Li, T. Zentgraf, M.Q. Mehmood, X. Chen, Nature Communications 14 (2023). date_created: 2023-07-06T06:34:37Z date_updated: 2023-07-06T06:42:10Z ddc: - '530' department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1038/s41467-023-39599-8 file: - access_level: closed content_type: application/pdf creator: zentgraf date_created: 2023-07-06T06:40:28Z date_updated: 2023-07-06T06:40:28Z file_id: '45869' file_name: NatureCommun_Ahmed_2023.pdf file_size: 4341041 relation: main_file success: 1 file_date_updated: 2023-07-06T06:40:28Z has_accepted_license: '1' intvolume: ' 14' issue: '1' keyword: - General Physics and Astronomy - General Biochemistry - Genetics and Molecular Biology - General Chemistry - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: Nature Communications publication_identifier: issn: - 2041-1723 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: Dynamic control of hybrid grafted perfect vector vortex beams type: journal_article user_id: '30525' volume: 14 year: '2023' ... --- _id: '46485' abstract: - lang: eng text: We present a miniaturized pulse shaping device that creates an arbitrary dispersion through the interaction of multiple metasurfaces on less than 2 mm3 volume. For this, a metalens and a grating-metasurface between two silver mirrors are fabricated. The grating contains further phase information to achieve the device's pulse shaping functionality. article_number: FTh4D.3 author: - first_name: René full_name: Geromel, René last_name: Geromel - first_name: Philip full_name: Georgi, Philip last_name: Georgi - first_name: Maximilian full_name: Protte, Maximilian id: '46170' last_name: Protte - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley - 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: 'Geromel R, Georgi P, Protte M, Bartley T, Huang L, Zentgraf T. Dispersion control with integrated plasmonic metasurfaces. In: CLEO: Fundamental Science 2023. Technical Digest Series. Optica Publishing Group; 2023. doi:10.1364/cleo_fs.2023.fth4d.3' apa: 'Geromel, R., Georgi, P., Protte, M., Bartley, T., Huang, L., & Zentgraf, T. (2023). Dispersion control with integrated plasmonic metasurfaces. CLEO: Fundamental Science 2023, Article FTh4D.3. CLEO: Fundamental Science 2023, San Jose, USA. https://doi.org/10.1364/cleo_fs.2023.fth4d.3' bibtex: '@inproceedings{Geromel_Georgi_Protte_Bartley_Huang_Zentgraf_2023, series={Technical Digest Series}, title={Dispersion control with integrated plasmonic metasurfaces}, DOI={10.1364/cleo_fs.2023.fth4d.3}, number={FTh4D.3}, booktitle={CLEO: Fundamental Science 2023}, publisher={Optica Publishing Group}, author={Geromel, René and Georgi, Philip and Protte, Maximilian and Bartley, Tim and Huang, Lingling and Zentgraf, Thomas}, year={2023}, collection={Technical Digest Series} }' chicago: 'Geromel, René, Philip Georgi, Maximilian Protte, Tim Bartley, Lingling Huang, and Thomas Zentgraf. “Dispersion Control with Integrated Plasmonic Metasurfaces.” In CLEO: Fundamental Science 2023. Technical Digest Series. Optica Publishing Group, 2023. https://doi.org/10.1364/cleo_fs.2023.fth4d.3.' ieee: 'R. Geromel, P. Georgi, M. Protte, T. Bartley, L. Huang, and T. Zentgraf, “Dispersion control with integrated plasmonic metasurfaces,” presented at the CLEO: Fundamental Science 2023, San Jose, USA, 2023, doi: 10.1364/cleo_fs.2023.fth4d.3.' mla: 'Geromel, René, et al. “Dispersion Control with Integrated Plasmonic Metasurfaces.” CLEO: Fundamental Science 2023, FTh4D.3, Optica Publishing Group, 2023, doi:10.1364/cleo_fs.2023.fth4d.3.' short: 'R. Geromel, P. Georgi, M. Protte, T. Bartley, L. Huang, T. Zentgraf, in: CLEO: Fundamental Science 2023, Optica Publishing Group, 2023.' conference: end_date: 2023-05-12 location: San Jose, USA name: 'CLEO: Fundamental Science 2023' start_date: 2023-05-07 date_created: 2023-08-14T08:19:22Z date_updated: 2023-08-14T08:22:31Z department: - _id: '15' - _id: '230' - _id: '289' - _id: '623' doi: 10.1364/cleo_fs.2023.fth4d.3 language: - iso: eng project: - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _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: 'CLEO: Fundamental Science 2023' publication_status: published publisher: Optica Publishing Group series_title: Technical Digest Series status: public title: Dispersion control with integrated plasmonic metasurfaces type: conference user_id: '30525' year: '2023' ...