[{"author":[{"full_name":"Wetter, Helene","first_name":"Helene","last_name":"Wetter"},{"full_name":"Wingenbach, Jan","first_name":"Jan","last_name":"Wingenbach","id":"69187"},{"last_name":"Rehberg","first_name":"Falk","full_name":"Rehberg, Falk"},{"full_name":"Gao, Wenlong","last_name":"Gao","first_name":"Wenlong"},{"first_name":"Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271"},{"full_name":"Zentgraf, Thomas","first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","id":"30525"}],"publication_identifier":{"issn":["2330-4022","2330-4022"]},"title":"Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling","year":"2026","intvolume":"        13","date_updated":"2026-04-20T05:09:57Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsphotonics.5c02865"}],"doi":"10.1021/acsphotonics.5c02865","publication":"ACS Photonics","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."}],"date_created":"2026-04-02T07:25:30Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"type":"journal_article","keyword":["metasurface","waveguides","Dirac point","polarization","negative coupling"],"status":"public","_id":"65316","publisher":"American Chemical Society (ACS)","page":"2128-2133","volume":13,"user_id":"30525","citation":{"apa":"Wetter, H., Wingenbach, J., Rehberg, F., Gao, W., Schumacher, S., &#38; Zentgraf, T. (2026). Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. <i>ACS Photonics</i>, <i>13</i>, 2128–2133. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>","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,” <i>ACS Photonics</i>, vol. 13, pp. 2128–2133, 2026, doi: <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>.","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.” <i>ACS Photonics</i> 13 (2026): 2128–33. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>.","short":"H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, T. Zentgraf, ACS Photonics 13 (2026) 2128–2133.","mla":"Wetter, Helene, et al. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” <i>ACS Photonics</i>, vol. 13, American Chemical Society (ACS), 2026, pp. 2128–33, doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>.","ama":"Wetter H, Wingenbach J, Rehberg F, Gao W, Schumacher S, Zentgraf T. Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. <i>ACS Photonics</i>. 2026;13:2128-2133. doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>","bibtex":"@article{Wetter_Wingenbach_Rehberg_Gao_Schumacher_Zentgraf_2026, title={Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}, volume={13}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>}, 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} }"},"quality_controlled":"1","external_id":{"arxiv":["2512.14452"]}},{"type":"conference","keyword":["Optical systems","Polymer waveguides","Quantum key distribution","Quantum light sources","Squeezed states","Waveguides"],"department":[{"_id":"15"},{"_id":"288"}],"date_created":"2023-01-24T08:06:33Z","abstract":[{"text":"We experimentally investigate the generation of continuous-wave optical squeezing from a titanium-indiffused lithium niobate waveguide resonator at low and high frequencies. The device promises integration with different platform chips for more complex optical systems.","lang":"eng"}],"publication":"2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference","citation":{"apa":"Domeneguetti, R. R., Conradi, H., Kleinert, M., Kießler, C., Stefszky, M., Herrmann, H., Silberhorn, C., Andersen, U. L., Neergaard-Nielsen, J. S., &#38; Gehring, T. (2021). Nonlinear waveguides for integrated quantum light source. <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, eb_4_1.","ieee":"R. R. Domeneguetti <i>et al.</i>, “Nonlinear waveguides for integrated quantum light source,” in <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, 2021, p. eb_4_1.","short":"R.R. Domeneguetti, H. Conradi, M. Kleinert, C. Kießler, M. Stefszky, H. Herrmann, C. Silberhorn, U.L. Andersen, J.S. Neergaard-Nielsen, T. Gehring, in: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, Optica Publishing Group, 2021, p. eb_4_1.","chicago":"Domeneguetti, Renato R., Hauke Conradi, Moritz Kleinert, Christian Kießler, Michael Stefszky, Harald Herrmann, Christine Silberhorn, Ulrik L. Andersen, Jonas Schou Neergaard-Nielsen, and Tobias Gehring. “Nonlinear Waveguides for Integrated Quantum Light Source.” In <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, eb_4_1. Optica Publishing Group, 2021.","mla":"Domeneguetti, Renato R., et al. “Nonlinear Waveguides for Integrated Quantum Light Source.” <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>, Optica Publishing Group, 2021, p. eb_4_1.","ama":"Domeneguetti RR, Conradi H, Kleinert M, et al. Nonlinear waveguides for integrated quantum light source. In: <i>2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference</i>. Optica Publishing Group; 2021:eb_4_1.","bibtex":"@inproceedings{Domeneguetti_Conradi_Kleinert_Kießler_Stefszky_Herrmann_Silberhorn_Andersen_Neergaard-Nielsen_Gehring_2021, title={Nonlinear waveguides for integrated quantum light source}, booktitle={2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference}, publisher={Optica Publishing Group}, author={Domeneguetti, Renato R. and Conradi, Hauke and Kleinert, Moritz and Kießler, Christian and Stefszky, Michael and Herrmann, Harald and Silberhorn, Christine and Andersen, Ulrik L. and Neergaard-Nielsen, Jonas Schou and Gehring, Tobias}, year={2021}, pages={eb_4_1} }"},"user_id":"42777","page":"eb_4_1","_id":"39027","language":[{"iso":"eng"}],"publisher":"Optica Publishing Group","date_updated":"2026-01-16T10:21:27Z","year":"2021","status":"public","title":"Nonlinear waveguides for integrated quantum light source","author":[{"last_name":"Domeneguetti","first_name":"Renato R.","full_name":"Domeneguetti, Renato R."},{"full_name":"Conradi, Hauke","last_name":"Conradi","first_name":"Hauke"},{"full_name":"Kleinert, Moritz","last_name":"Kleinert","first_name":"Moritz"},{"full_name":"Kießler, Christian","last_name":"Kießler","first_name":"Christian","id":"44252"},{"full_name":"Stefszky, Michael","last_name":"Stefszky","first_name":"Michael","id":"42777"},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Ulrik L.","last_name":"Andersen","full_name":"Andersen, Ulrik L."},{"full_name":"Neergaard-Nielsen, Jonas Schou","last_name":"Neergaard-Nielsen","first_name":"Jonas Schou"},{"full_name":"Gehring, Tobias","first_name":"Tobias","last_name":"Gehring"}]}]