[{"year":"2026","title":"Lithium niobate tantalate mixed crystals: a versatile platform for nonlinear quantum processes","author":[{"id":"88149","full_name":"Roeder, Franz","first_name":"Franz","last_name":"Roeder"},{"full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","first_name":"Michael","last_name":"Rüsing","id":"22501"},{"last_name":"Hehemann","first_name":"Tobias","full_name":"Hehemann, Tobias"},{"id":"81424","full_name":"Gnanavel, Abira","first_name":"Abira","last_name":"Gnanavel"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244"},{"id":"27150","first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin"},{"full_name":"Imlau, Mirco","first_name":"Mirco","last_name":"Imlau"},{"id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn"}],"publication_identifier":{"issn":["2159-3930"]},"date_updated":"2026-09-02T13:35:22Z","publication_status":"published","intvolume":"        16","article_type":"original","main_file_link":[{"url":"https://doi.org/10.1364/OME.592892","open_access":"1"}],"article_number":"2668","language":[{"iso":"eng"}],"doi":"10.1364/ome.592892","publication":"Optical Materials Express","issue":"8","abstract":[{"text":"Many quantum optical applications in spectroscopy, communication and signal analysis rely on spectrally-engineered nonlinear optical interactions to target specific wavelengths or bandwidth. Here, in an established material platform like lithium niobate the achievable wavelength and bandwidth combinations are usually limited by the material’s dispersion and its birefringence. In this regard, mixed crystals of lithium niobate tantalate (LNT) promise a novel material platform, because they allow tuning the birefringence, which is central for type II phase matching devices. Crucially, LNT offers crystal  compositions without any birefringence, which still retain their second-order optical nonlinearity. Despite recent progress in the growth and fabrication of LNT, so far no works have investigated the unique properties of LNT for use in electro-optics, nonlinear or quantum optics. In this study, we explore nonlinear optical devices based on LNT for broad- and narrowband nonlinear optical interactions based on recently measured Sellmeier coefficients. Most interestingly, we find that compositions without birefringence allow the design of broadband, degenerate type II phase matching sources spanning the whole near- to mid-infrared range by only changing the poling period and pump wavelength. Such devices are not easily realizable in pure lithium niobate or lithium tantalate. This could potentially allow for\tmore flexible light sources and nonlinear devices in quantum metrology, quantum spectroscopy and quantum communication.","lang":"eng"}],"date_created":"2026-09-02T11:53:45Z","type":"journal_article","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"status":"public","publisher":"Optica Publishing Group","_id":"66939","funded_apc":"1","user_id":"22501","volume":16,"citation":{"apa":"Roeder, F., Rüsing, M., Hehemann, T., Gnanavel, A., Eigner, C., Brecht, B., Imlau, M., &#38; Silberhorn, C. (2026). Lithium niobate tantalate mixed crystals: a versatile platform for nonlinear quantum processes. <i>Optical Materials Express</i>, <i>16</i>(8), Article 2668. <a href=\"https://doi.org/10.1364/ome.592892\">https://doi.org/10.1364/ome.592892</a>","ieee":"F. Roeder <i>et al.</i>, “Lithium niobate tantalate mixed crystals: a versatile platform for nonlinear quantum processes,” <i>Optical Materials Express</i>, vol. 16, no. 8, Art. no. 2668, 2026, doi: <a href=\"https://doi.org/10.1364/ome.592892\">10.1364/ome.592892</a>.","short":"F. Roeder, M. Rüsing, T. Hehemann, A. Gnanavel, C. Eigner, B. Brecht, M. Imlau, C. Silberhorn, Optical Materials Express 16 (2026).","chicago":"Roeder, Franz, Michael Rüsing, Tobias Hehemann, Abira Gnanavel, Christof Eigner, Benjamin Brecht, Mirco Imlau, and Christine Silberhorn. “Lithium Niobate Tantalate Mixed Crystals: A Versatile Platform for Nonlinear Quantum Processes.” <i>Optical Materials Express</i> 16, no. 8 (2026). <a href=\"https://doi.org/10.1364/ome.592892\">https://doi.org/10.1364/ome.592892</a>.","mla":"Roeder, Franz, et al. “Lithium Niobate Tantalate Mixed Crystals: A Versatile Platform for Nonlinear Quantum Processes.” <i>Optical Materials Express</i>, vol. 16, no. 8, 2668, Optica Publishing Group, 2026, doi:<a href=\"https://doi.org/10.1364/ome.592892\">10.1364/ome.592892</a>.","ama":"Roeder F, Rüsing M, Hehemann T, et al. Lithium niobate tantalate mixed crystals: a versatile platform for nonlinear quantum processes. <i>Optical Materials Express</i>. 2026;16(8). doi:<a href=\"https://doi.org/10.1364/ome.592892\">10.1364/ome.592892</a>","bibtex":"@article{Roeder_Rüsing_Hehemann_Gnanavel_Eigner_Brecht_Imlau_Silberhorn_2026, title={Lithium niobate tantalate mixed crystals: a versatile platform for nonlinear quantum processes}, volume={16}, DOI={<a href=\"https://doi.org/10.1364/ome.592892\">10.1364/ome.592892</a>}, number={82668}, journal={Optical Materials Express}, publisher={Optica Publishing Group}, author={Roeder, Franz and Rüsing, Michael and Hehemann, Tobias and Gnanavel, Abira and Eigner, Christof and Brecht, Benjamin and Imlau, Mirco and Silberhorn, Christine}, year={2026} }"},"quality_controlled":"1","oa":"1"},{"status":"public","funded_apc":"1","_id":"66941","publisher":"Optica Publishing Group","user_id":"22501","volume":16,"citation":{"mla":"Hehemann, Tobias, et al. “Composition-Dependent Refractive Index Dispersion and Sellmeier Coefficients for Lithium Niobate Tantalate Solid Solutions.” <i>Optical Materials Express</i>, vol. 16, no. 7, 2069, Optica Publishing Group, 2026, doi:<a href=\"https://doi.org/10.1364/ome.592118\">10.1364/ome.592118</a>.","bibtex":"@article{Hehemann_Dömer_Sauerwein_Rüsing_Ganschow_Imlau_2026, title={Composition-dependent refractive index dispersion and Sellmeier coefficients for lithium niobate tantalate solid solutions}, volume={16}, DOI={<a href=\"https://doi.org/10.1364/ome.592118\">10.1364/ome.592118</a>}, number={72069}, journal={Optical Materials Express}, publisher={Optica Publishing Group}, author={Hehemann, Tobias and Dömer, Niklas and Sauerwein, Felix and Rüsing, Michael and Ganschow, Steffen and Imlau, Mirco}, year={2026} }","ama":"Hehemann T, Dömer N, Sauerwein F, Rüsing M, Ganschow S, Imlau M. Composition-dependent refractive index dispersion and Sellmeier coefficients for lithium niobate tantalate solid solutions. <i>Optical Materials Express</i>. 2026;16(7). doi:<a href=\"https://doi.org/10.1364/ome.592118\">10.1364/ome.592118</a>","ieee":"T. Hehemann, N. Dömer, F. Sauerwein, M. Rüsing, S. Ganschow, and M. Imlau, “Composition-dependent refractive index dispersion and Sellmeier coefficients for lithium niobate tantalate solid solutions,” <i>Optical Materials Express</i>, vol. 16, no. 7, Art. no. 2069, 2026, doi: <a href=\"https://doi.org/10.1364/ome.592118\">10.1364/ome.592118</a>.","apa":"Hehemann, T., Dömer, N., Sauerwein, F., Rüsing, M., Ganschow, S., &#38; Imlau, M. (2026). Composition-dependent refractive index dispersion and Sellmeier coefficients for lithium niobate tantalate solid solutions. <i>Optical Materials Express</i>, <i>16</i>(7), Article 2069. <a href=\"https://doi.org/10.1364/ome.592118\">https://doi.org/10.1364/ome.592118</a>","chicago":"Hehemann, Tobias, Niklas Dömer, Felix Sauerwein, Michael Rüsing, Steffen Ganschow, and Mirco Imlau. “Composition-Dependent Refractive Index Dispersion and Sellmeier Coefficients for Lithium Niobate Tantalate Solid Solutions.” <i>Optical Materials Express</i> 16, no. 7 (2026). <a href=\"https://doi.org/10.1364/ome.592118\">https://doi.org/10.1364/ome.592118</a>.","short":"T. Hehemann, N. Dömer, F. Sauerwein, M. Rüsing, S. Ganschow, M. Imlau, Optical Materials Express 16 (2026)."},"quality_controlled":"1","oa":"1","year":"2026","title":"Composition-dependent refractive index dispersion and Sellmeier coefficients for lithium niobate tantalate solid solutions","author":[{"first_name":"Tobias","last_name":"Hehemann","full_name":"Hehemann, Tobias"},{"full_name":"Dömer, Niklas","first_name":"Niklas","last_name":"Dömer"},{"last_name":"Sauerwein","first_name":"Felix","full_name":"Sauerwein, Felix"},{"id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577","first_name":"Michael"},{"full_name":"Ganschow, Steffen","first_name":"Steffen","last_name":"Ganschow"},{"full_name":"Imlau, Mirco","first_name":"Mirco","last_name":"Imlau"}],"publication_identifier":{"issn":["2159-3930"]},"date_updated":"2026-09-02T12:06:36Z","publication_status":"published","intvolume":"        16","article_type":"original","main_file_link":[{"url":"https://doi.org/10.1364/OME.592118","open_access":"1"}],"article_number":"2069","language":[{"iso":"eng"}],"doi":"10.1364/ome.592118","publication":"Optical Materials Express","issue":"7","abstract":[{"lang":"eng","text":"Understanding and controlling the optical properties of lithium niobate tantalate solid solutions (LiNb1−xTaxO3, 0 ≤ x ≤ 1) is essential for their use in integrated quantum and nonlinear photonics. This material system allows for composition-dependent tuning of key optical parameters such as refractive indices and birefringence. While lithium niobate (LiNbO3, x = 0) and lithium tantalate (LiTaO3, x = 1) are well characterized, reliable dispersion data for intermediate compositions remain scarce, limiting accurate modeling and refractive index engineering. Here, we address this gap by experimentally determining the ordinary and extraordinary refractive indices of LiNb1−xTaxO3 over the spectral range of 405 − 1550 nm using an interferometric technique. As a result, composition-dependent refractive index dispersion and Sellmeier coefficients are derived and discussed in relation to previous studies and structural aspects. In particular, a monotonic decrease of the ordinary refractive index with increasing Tantalum concentration is observed. The present Sellmeier coefficients further allow discussion of zero birefringence dispersion and its composition dependence in lithium niobate tantalate."}],"date_created":"2026-09-02T12:01:19Z","type":"journal_article","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}]},{"citation":{"ieee":"B. Zhang, M. Plidschun, M. A. Schmidt, and H.-S. Kitzerow, “Anchoring and electro-optic switching of liquid crystals on nano-structured surfaces fabricated by two-photon based nano-printing,” <i>Optical Materials Express</i>, vol. 13, no. 12, Art. no. 3467, 2023, doi: <a href=\"https://doi.org/10.1364/ome.503100\">10.1364/ome.503100</a>.","apa":"Zhang, B., Plidschun, M., Schmidt, M. A., &#38; Kitzerow, H.-S. (2023). Anchoring and electro-optic switching of liquid crystals on nano-structured surfaces fabricated by two-photon based nano-printing. <i>Optical Materials Express</i>, <i>13</i>(12), Article 3467. <a href=\"https://doi.org/10.1364/ome.503100\">https://doi.org/10.1364/ome.503100</a>","chicago":"Zhang, Bingru, Malte Plidschun, Markus A. Schmidt, and Heinz-Siegfried Kitzerow. “Anchoring and Electro-Optic Switching of Liquid Crystals on Nano-Structured Surfaces Fabricated by Two-Photon Based Nano-Printing.” <i>Optical Materials Express</i> 13, no. 12 (2023). <a href=\"https://doi.org/10.1364/ome.503100\">https://doi.org/10.1364/ome.503100</a>.","short":"B. Zhang, M. Plidschun, M.A. Schmidt, H.-S. Kitzerow, Optical Materials Express 13 (2023).","mla":"Zhang, Bingru, et al. “Anchoring and Electro-Optic Switching of Liquid Crystals on Nano-Structured Surfaces Fabricated by Two-Photon Based Nano-Printing.” <i>Optical Materials Express</i>, vol. 13, no. 12, 3467, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ome.503100\">10.1364/ome.503100</a>.","bibtex":"@article{Zhang_Plidschun_Schmidt_Kitzerow_2023, title={Anchoring and electro-optic switching of liquid crystals on nano-structured surfaces fabricated by two-photon based nano-printing}, volume={13}, DOI={<a href=\"https://doi.org/10.1364/ome.503100\">10.1364/ome.503100</a>}, number={123467}, journal={Optical Materials Express}, publisher={Optica Publishing Group}, author={Zhang, Bingru and Plidschun, Malte and Schmidt, Markus A. and Kitzerow, Heinz-Siegfried}, year={2023} }","ama":"Zhang B, Plidschun M, Schmidt MA, Kitzerow H-S. Anchoring and electro-optic switching of liquid crystals on nano-structured surfaces fabricated by two-photon based nano-printing. <i>Optical Materials Express</i>. 2023;13(12). doi:<a href=\"https://doi.org/10.1364/ome.503100\">10.1364/ome.503100</a>"},"volume":13,"user_id":"254","_id":"49609","publisher":"Optica Publishing Group","status":"public","department":[{"_id":"313"},{"_id":"230"},{"_id":"35"}],"keyword":["Electronic","Optical and Magnetic Materials"],"type":"journal_article","date_created":"2023-12-13T15:59:37Z","abstract":[{"text":"<jats:p>The alignment of liquid crystals on surfaces plays a central role in optimizing their performances. In this work, a cutting-edge nano-lithography-based method to control the local orientation of a thermotropic liquid crystal is applied to easily available commercial standard materials and evaluated. Parallel nanogrooves on a substrate, created through 3D nanoprinting in a negative-tone photoresin optimized for two-photon polymerization are used for this purpose. Azimuthal anchoring energies of the order from 10<jats:sup>−6</jats:sup> J/m<jats:sup>2</jats:sup> to 10<jats:sup>−5</jats:sup> J/m<jats:sup>2</jats:sup> are found, depending on the spacing, width and depth of the grooves. In part, these values are larger than those reported previously for another photopolymer. Both uniform alignment and spatial patterns of different alignment directions can be realized. Electro-optic studies confirm the suitability of the method for electrically addressable photonic applications and indicate strong polar anchoring.</jats:p>","lang":"eng"}],"publication":"Optical Materials Express","issue":"12","doi":"10.1364/ome.503100","language":[{"iso":"eng"}],"article_number":"3467","intvolume":"        13","publication_status":"published","date_updated":"2023-12-13T16:06:29Z","author":[{"first_name":"Bingru","last_name":"Zhang","full_name":"Zhang, Bingru"},{"full_name":"Plidschun, Malte","last_name":"Plidschun","first_name":"Malte"},{"first_name":"Markus A.","last_name":"Schmidt","full_name":"Schmidt, Markus A."},{"id":"254","full_name":"Kitzerow, Heinz-Siegfried","first_name":"Heinz-Siegfried","last_name":"Kitzerow"}],"publication_identifier":{"issn":["2159-3930"]},"year":"2023","title":"Anchoring and electro-optic switching of liquid crystals on nano-structured surfaces fabricated by two-photon based nano-printing"},{"article_number":"2997","language":[{"iso":"eng"}],"doi":"10.1364/ome.497006","year":"2023","title":"Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]","author":[{"full_name":"Lüders, Carolin","first_name":"Carolin","last_name":"Lüders"},{"first_name":"Franziska","last_name":"Barkhausen","full_name":"Barkhausen, Franziska","id":"63631"},{"first_name":"Matthias","last_name":"Pukrop","full_name":"Pukrop, Matthias"},{"first_name":"Elena","last_name":"Rozas","full_name":"Rozas, Elena"},{"full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan","id":"75127"},{"id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher"},{"full_name":"Aßmann, Marc","last_name":"Aßmann","first_name":"Marc"}],"publication_identifier":{"issn":["2159-3930"]},"date_updated":"2025-09-12T11:41:42Z","publication_status":"published","intvolume":"        13","date_created":"2025-09-12T11:40:26Z","type":"journal_article","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"706"},{"_id":"35"},{"_id":"230"},{"_id":"27"},{"_id":"623"}],"publication":"Optical Materials Express","issue":"11","abstract":[{"lang":"eng","text":"<jats:p>This review examines the use of continuous-variable spectroscopy techniques for investigating quantum coherence and light-matter interactions in semiconductor systems with ultrafast dynamics. Special emphasis is placed on multichannel homodyne detection as a powerful tool to measure the quantum coherence and the full density matrix of a polariton system. Observations, such as coherence times that exceed the nanosecond scale obtained by monitoring the temporal decay of quantum coherence in a polariton condensate, are discussed. Proof-of-concept experiments and numerical simulations that demonstrate the enhanced resourcefulness of the produced system states for modern quantum protocols are assessed. The combination of tailored resource quantifiers and ultrafast spectroscopy techniques that have recently been demonstrated paves the way for future applications of quantum information technologies.</jats:p>"}],"publisher":"Optica Publishing Group","_id":"61266","user_id":"16199","volume":13,"status":"public","citation":{"mla":"Lüders, Carolin, et al. “Continuous-Variable Quantum Optics and Resource Theory for Ultrafast Semiconductor Spectroscopy [Invited].” <i>Optical Materials Express</i>, vol. 13, no. 11, 2997, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>.","ama":"Lüders C, Barkhausen F, Pukrop M, et al. Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]. <i>Optical Materials Express</i>. 2023;13(11). doi:<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>","bibtex":"@article{Lüders_Barkhausen_Pukrop_Rozas_Sperling_Schumacher_Aßmann_2023, title={Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]}, volume={13}, DOI={<a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>}, number={112997}, journal={Optical Materials Express}, publisher={Optica Publishing Group}, author={Lüders, Carolin and Barkhausen, Franziska and Pukrop, Matthias and Rozas, Elena and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}, year={2023} }","apa":"Lüders, C., Barkhausen, F., Pukrop, M., Rozas, E., Sperling, J., Schumacher, S., &#38; Aßmann, M. (2023). Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]. <i>Optical Materials Express</i>, <i>13</i>(11), Article 2997. <a href=\"https://doi.org/10.1364/ome.497006\">https://doi.org/10.1364/ome.497006</a>","ieee":"C. Lüders <i>et al.</i>, “Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited],” <i>Optical Materials Express</i>, vol. 13, no. 11, Art. no. 2997, 2023, doi: <a href=\"https://doi.org/10.1364/ome.497006\">10.1364/ome.497006</a>.","short":"C. Lüders, F. Barkhausen, M. Pukrop, E. Rozas, J. Sperling, S. Schumacher, M. Aßmann, Optical Materials Express 13 (2023).","chicago":"Lüders, Carolin, Franziska Barkhausen, Matthias Pukrop, Elena Rozas, Jan Sperling, Stefan Schumacher, and Marc Aßmann. “Continuous-Variable Quantum Optics and Resource Theory for Ultrafast Semiconductor Spectroscopy [Invited].” <i>Optical Materials Express</i> 13, no. 11 (2023). <a href=\"https://doi.org/10.1364/ome.497006\">https://doi.org/10.1364/ome.497006</a>."},"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"266","name":"PhoQC: Photonisches Quantencomputing"}]},{"date_created":"2021-12-02T18:47:42Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"},{"_id":"2"},{"_id":"35"},{"_id":"307"}],"type":"journal_article","issue":"1","publication":"Optical Materials Express","abstract":[{"text":"With the rapid advances of functional dielectric metasurfaces and their integration on on-chip nanophotonic devices, the necessity of metasurfaces working in different environments, especially in biological applications, arose. However, the metasurfaces’ performance is tied to the unit cell’s efficiency and ultimately the surrounding environment it was designed for, thus reducing its applicability if exposed to altering refractive index media. Here, we report a method to increase a metasurface’s versatility by covering the high-index metasurface with a low index porous SiO2 film, protecting the metasurface from environmental changes while keeping the working efficiency unchanged. We show, that a covered metasurface retains its functionality even when exposed to fluidic environments.","lang":"eng"}],"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-12-1-13&id=465602","open_access":"1"}],"doi":"10.1364/ome.444264","publication_identifier":{"issn":["2159-3930"]},"author":[{"last_name":"Geromel","first_name":"René","full_name":"Geromel, René"},{"id":"11848","full_name":"Weinberger, Christian","first_name":"Christian","last_name":"Weinberger"},{"full_name":"Brormann, Katja","last_name":"Brormann","first_name":"Katja"},{"last_name":"Tiemann","first_name":"Michael","orcid":"0000-0003-1711-2722","full_name":"Tiemann, Michael","id":"23547"},{"id":"30525","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf","full_name":"Zentgraf, Thomas"}],"title":"Porous SiO2 coated dielectric metasurface with consistent performance independent of environmental conditions","year":"2022","article_type":"original","intvolume":"        12","publication_status":"published","date_updated":"2023-03-08T08:13:58Z","oa":"1","citation":{"ieee":"R. Geromel, C. Weinberger, K. Brormann, M. Tiemann, and T. Zentgraf, “Porous SiO2 coated dielectric metasurface with consistent performance independent of environmental conditions,” <i>Optical Materials Express</i>, vol. 12, no. 1, pp. 13–21, 2022, doi: <a href=\"https://doi.org/10.1364/ome.444264\">10.1364/ome.444264</a>.","apa":"Geromel, R., Weinberger, C., Brormann, K., Tiemann, M., &#38; Zentgraf, T. (2022). Porous SiO2 coated dielectric metasurface with consistent performance independent of environmental conditions. <i>Optical Materials Express</i>, <i>12</i>(1), 13–21. <a href=\"https://doi.org/10.1364/ome.444264\">https://doi.org/10.1364/ome.444264</a>","chicago":"Geromel, René, Christian Weinberger, Katja Brormann, Michael Tiemann, and Thomas Zentgraf. “Porous SiO2 Coated Dielectric Metasurface with Consistent Performance Independent of Environmental Conditions.” <i>Optical Materials Express</i> 12, no. 1 (2022): 13–21. <a href=\"https://doi.org/10.1364/ome.444264\">https://doi.org/10.1364/ome.444264</a>.","short":"R. Geromel, C. Weinberger, K. Brormann, M. Tiemann, T. Zentgraf, Optical Materials Express 12 (2022) 13–21.","mla":"Geromel, René, et al. “Porous SiO2 Coated Dielectric Metasurface with Consistent Performance Independent of Environmental Conditions.” <i>Optical Materials Express</i>, vol. 12, no. 1, Optica, 2022, pp. 13–21, doi:<a href=\"https://doi.org/10.1364/ome.444264\">10.1364/ome.444264</a>.","bibtex":"@article{Geromel_Weinberger_Brormann_Tiemann_Zentgraf_2022, title={Porous SiO2 coated dielectric metasurface with consistent performance independent of environmental conditions}, volume={12}, DOI={<a href=\"https://doi.org/10.1364/ome.444264\">10.1364/ome.444264</a>}, number={1}, journal={Optical Materials Express}, publisher={Optica}, author={Geromel, René and Weinberger, Christian and Brormann, Katja and Tiemann, Michael and Zentgraf, Thomas}, year={2022}, pages={13–21} }","ama":"Geromel R, Weinberger C, Brormann K, Tiemann M, Zentgraf T. Porous SiO2 coated dielectric metasurface with consistent performance independent of environmental conditions. <i>Optical Materials Express</i>. 2022;12(1):13-21. doi:<a href=\"https://doi.org/10.1364/ome.444264\">10.1364/ome.444264</a>"},"quality_controlled":"1","publisher":"Optica","_id":"28254","page":"13-21","volume":12,"user_id":"23547","status":"public"},{"date_created":"2021-06-16T05:52:21Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"429"}],"publication":"Optical Materials Express","issue":"7","abstract":[{"text":"We realize and investigate a nonlinear metasurface taking advantage of intersubband transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing to huge band offsets, the structures offer resonant transitions in the telecom window around 1.55 µm. These heterostructures are functionalized with an array of plasmonic antennas featuring cross-polarized resonances at these near-infrared wavelengths and their second harmonic. This kind of nonlinear metasurface allows for substantial second-harmonic generation at normal incidence which is completely absent for an antenna array without the multi-quantum well structure underneath. While the second harmonic is originally radiated only into the plane of the quantum wells, a proper geometrical arrangement of the plasmonic elements permits the redirection of the second-harmonic light to free-space radiation, which is emitted perpendicular to the surface.","lang":"eng"}],"article_number":"2134","main_file_link":[{"open_access":"1","url":"https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-11-7-2134&id=452008"}],"language":[{"iso":"eng"}],"doi":"10.1364/ome.426236","year":"2021","title":"Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays","publication_identifier":{"issn":["2159-3930"]},"author":[{"full_name":"Mundry, Jan","first_name":"Jan","last_name":"Mundry"},{"last_name":"Spreyer","first_name":"Florian","full_name":"Spreyer, Florian"},{"full_name":"Jmerik, Valentin","first_name":"Valentin","last_name":"Jmerik"},{"full_name":"Ivanov, Sergey","first_name":"Sergey","last_name":"Ivanov"},{"id":"30525","last_name":"Zentgraf","first_name":"Thomas","orcid":"0000-0002-8662-1101","full_name":"Zentgraf, Thomas"},{"full_name":"Betz, Markus","last_name":"Betz","first_name":"Markus"}],"publication_status":"published","date_updated":"2022-01-06T06:55:33Z","article_type":"original","intvolume":"        11","oa":"1","citation":{"mla":"Mundry, Jan, et al. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” <i>Optical Materials Express</i>, vol. 11, no. 7, 2134, OSA, 2021, doi:<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>.","ama":"Mundry J, Spreyer F, Jmerik V, Ivanov S, Zentgraf T, Betz M. Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays. <i>Optical Materials Express</i>. 2021;11(7). doi:<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>","bibtex":"@article{Mundry_Spreyer_Jmerik_Ivanov_Zentgraf_Betz_2021, title={Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays}, volume={11}, DOI={<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>}, number={72134}, journal={Optical Materials Express}, publisher={OSA}, author={Mundry, Jan and Spreyer, Florian and Jmerik, Valentin and Ivanov, Sergey and Zentgraf, Thomas and Betz, Markus}, year={2021} }","apa":"Mundry, J., Spreyer, F., Jmerik, V., Ivanov, S., Zentgraf, T., &#38; Betz, M. (2021). Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays. <i>Optical Materials Express</i>, <i>11</i>(7). <a href=\"https://doi.org/10.1364/ome.426236\">https://doi.org/10.1364/ome.426236</a>","ieee":"J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, and M. Betz, “Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays,” <i>Optical Materials Express</i>, vol. 11, no. 7, 2021.","short":"J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, M. Betz, Optical Materials Express 11 (2021).","chicago":"Mundry, Jan, Florian Spreyer, Valentin Jmerik, Sergey Ivanov, Thomas Zentgraf, and Markus Betz. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” <i>Optical Materials Express</i> 11, no. 7 (2021). <a href=\"https://doi.org/10.1364/ome.426236\">https://doi.org/10.1364/ome.426236</a>."},"quality_controlled":"1","project":[{"name":"TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"65","name":"TRR 142 - Subproject A8"}],"_id":"22450","publisher":"OSA","user_id":"30525","volume":11,"status":"public"},{"date_created":"2019-05-07T14:54:33Z","type":"journal_article","department":[{"_id":"15"},{"_id":"288"}],"publication":"Optical Materials Express","citation":{"short":"M.F. Volk, C.E. Rüter, M. Santandrea, C. Eigner, L. Padberg, H. Herrmann, C. Silberhorn, D. Kip, Optical Materials Express (2017).","chicago":"Volk, Martin F., Christian E. Rüter, Matteo Santandrea, Christof Eigner, Laura Padberg, Harald Herrmann, Christine Silberhorn, and Detlef Kip. “Fabrication of Low-Loss Rb-Exchanged Ridge Waveguides in z-Cut KTiOPO_4.” <i>Optical Materials Express</i>, 2017. <a href=\"https://doi.org/10.1364/ome.8.000082\">https://doi.org/10.1364/ome.8.000082</a>.","ieee":"M. F. Volk <i>et al.</i>, “Fabrication of low-loss Rb-exchanged ridge waveguides in z-cut KTiOPO_4,” <i>Optical Materials Express</i>, Art. no. 82, 2017, doi: <a href=\"https://doi.org/10.1364/ome.8.000082\">10.1364/ome.8.000082</a>.","apa":"Volk, M. F., Rüter, C. E., Santandrea, M., Eigner, C., Padberg, L., Herrmann, H., Silberhorn, C., &#38; Kip, D. (2017). Fabrication of low-loss Rb-exchanged ridge waveguides in z-cut KTiOPO_4. <i>Optical Materials Express</i>, Article 82. <a href=\"https://doi.org/10.1364/ome.8.000082\">https://doi.org/10.1364/ome.8.000082</a>","bibtex":"@article{Volk_Rüter_Santandrea_Eigner_Padberg_Herrmann_Silberhorn_Kip_2017, title={Fabrication of low-loss Rb-exchanged ridge waveguides in z-cut KTiOPO_4}, DOI={<a href=\"https://doi.org/10.1364/ome.8.000082\">10.1364/ome.8.000082</a>}, number={82}, journal={Optical Materials Express}, author={Volk, Martin F. and Rüter, Christian E. and Santandrea, Matteo and Eigner, Christof and Padberg, Laura and Herrmann, Harald and Silberhorn, Christine and Kip, Detlef}, year={2017} }","ama":"Volk MF, Rüter CE, Santandrea M, et al. Fabrication of low-loss Rb-exchanged ridge waveguides in z-cut KTiOPO_4. <i>Optical Materials Express</i>. Published online 2017. doi:<a href=\"https://doi.org/10.1364/ome.8.000082\">10.1364/ome.8.000082</a>","mla":"Volk, Martin F., et al. “Fabrication of Low-Loss Rb-Exchanged Ridge Waveguides in z-Cut KTiOPO_4.” <i>Optical Materials Express</i>, 82, 2017, doi:<a href=\"https://doi.org/10.1364/ome.8.000082\">10.1364/ome.8.000082</a>."},"article_number":"82","_id":"9681","language":[{"iso":"eng"}],"user_id":"13244","doi":"10.1364/ome.8.000082","status":"public","year":"2017","title":"Fabrication of low-loss Rb-exchanged ridge waveguides in z-cut KTiOPO_4","publication_identifier":{"issn":["2159-3930"]},"author":[{"first_name":"Martin F.","last_name":"Volk","full_name":"Volk, Martin F."},{"full_name":"Rüter, Christian E.","first_name":"Christian E.","last_name":"Rüter"},{"full_name":"Santandrea, Matteo","first_name":"Matteo","orcid":"0000-0001-5718-358X","last_name":"Santandrea","id":"55095"},{"id":"13244","full_name":"Eigner, Christof","first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083"},{"id":"40300","full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura"},{"id":"216","full_name":"Herrmann, Harald","last_name":"Herrmann","first_name":"Harald"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"first_name":"Detlef","last_name":"Kip","full_name":"Kip, Detlef"}],"publication_status":"published","date_updated":"2022-01-06T07:04:18Z"}]