[{"external_id":{"arxiv":["2512.14452"]},"language":[{"iso":"eng"}],"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."}],"publisher":"American Chemical Society (ACS)","date_created":"2026-04-02T07:25:30Z","title":"Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling","quality_controlled":"1","year":"2026","_id":"65316","user_id":"30525","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"article_number":"acsphotonics.5c02865","type":"journal_article","status":"public","date_updated":"2026-04-02T07:31:24Z","oa":"1","author":[{"last_name":"Wetter","full_name":"Wetter, Helene","first_name":"Helene"},{"first_name":"Jan","last_name":"Wingenbach","id":"69187","full_name":"Wingenbach, Jan"},{"first_name":"Falk","last_name":"Rehberg","full_name":"Rehberg, Falk"},{"first_name":"Wenlong","last_name":"Gao","full_name":"Gao, Wenlong"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271","first_name":"Stefan"},{"full_name":"Zentgraf, Thomas","id":"30525","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas"}],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2512.14452"}],"doi":"10.1021/acsphotonics.5c02865","publication_status":"published","publication_identifier":{"issn":["2330-4022","2330-4022"]},"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>, Article acsphotonics.5c02865. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/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>. Published online 2026. doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>","short":"H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, T. Zentgraf, ACS Photonics (2026).","bibtex":"@article{Wetter_Wingenbach_Rehberg_Gao_Schumacher_Zentgraf_2026, title={Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>}, 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} }","mla":"Wetter, Helene, et al. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” <i>ACS Photonics</i>, acsphotonics.5c02865, American Chemical Society (ACS), 2026, doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">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>, Art. no. acsphotonics.5c02865, 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>, 2026. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>."}}]