[{"article_number":"064109","language":[{"iso":"eng"}],"_id":"59276","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"22501","abstract":[{"lang":"eng","text":"Stress plays a crucial role in thin films and layered systems, and thus significantly influences the material's electrical, mechanical and (nonlinear) optical responses. Despite lithium niobate's wide applicability as a nonlinear optical material, the impact of mechanical stress on its nonlinear optical properties is not well characterized. In this work, we systematically study both experimentally and theoretically, the nonlinear optical responses of thin film lithium niobate (TFLN) single crystals. Compressive and tensile stress is applied in our experiment using a piezodriven strain cell. We then record the second-harmonic-generated (SHG) response in back-reflection geometry, and compare these results to theoretical modeling using density functional theory (DFT). Both methods consistently reveal that uniaxial stress induces changes of the nonlinear optical susceptibility of certain tensor elements on the order of up to 1 pm/(V GPa). The exact value depends on the tensor element that is addressed in our SHG analysis, on the crystal orientation, and also whether using compressive or tensile stresses. Furthermore, a lowering of the crystal symmetry when applying stress along the <a:math xmlns:a=\"http://www.w3.org/1998/Math/MathML\"><a:mi>x</a:mi></a:math> or <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\"><b:mi>y</b:mi></b:math> crystallographic axes is observed by the appearance of new nonlinear optical tensor elements within the strained crystals."}],"status":"public","publication":"Physical Review B","type":"journal_article","title":"Second-order nonlinear piezo-optic properties of single crystal lithium niobate thin films","doi":"10.1103/physrevb.111.064109","publisher":"American Physical Society (APS)","date_updated":"2025-04-02T16:24:47Z","volume":111,"author":[{"last_name":"Pionteck","full_name":"Pionteck, Mike N.","first_name":"Mike N."},{"first_name":"Matthias","full_name":"Roeper, Matthias","last_name":"Roeper"},{"last_name":"Koppitz","full_name":"Koppitz, Boris","first_name":"Boris"},{"first_name":"Samuel D.","full_name":"Seddon, Samuel D.","last_name":"Seddon"},{"first_name":"Michael","full_name":"Rüsing, Michael","id":"22501","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","first_name":"Christof"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"full_name":"Sanna, Simone","last_name":"Sanna","first_name":"Simone"},{"full_name":"Eng, Lukas M.","last_name":"Eng","first_name":"Lukas M."}],"date_created":"2025-04-02T16:21:47Z","year":"2025","intvolume":"       111","citation":{"apa":"Pionteck, M. N., Roeper, M., Koppitz, B., Seddon, S. D., Rüsing, M., Padberg, L., Eigner, C., Silberhorn, C., Sanna, S., &#38; Eng, L. M. (2025). Second-order nonlinear piezo-optic properties of single crystal lithium niobate thin films. <i>Physical Review B</i>, <i>111</i>(6), Article 064109. <a href=\"https://doi.org/10.1103/physrevb.111.064109\">https://doi.org/10.1103/physrevb.111.064109</a>","mla":"Pionteck, Mike N., et al. “Second-Order Nonlinear Piezo-Optic Properties of Single Crystal Lithium Niobate Thin Films.” <i>Physical Review B</i>, vol. 111, no. 6, 064109, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/physrevb.111.064109\">10.1103/physrevb.111.064109</a>.","short":"M.N. Pionteck, M. Roeper, B. Koppitz, S.D. Seddon, M. Rüsing, L. Padberg, C. Eigner, C. Silberhorn, S. Sanna, L.M. Eng, Physical Review B 111 (2025).","bibtex":"@article{Pionteck_Roeper_Koppitz_Seddon_Rüsing_Padberg_Eigner_Silberhorn_Sanna_Eng_2025, title={Second-order nonlinear piezo-optic properties of single crystal lithium niobate thin films}, volume={111}, DOI={<a href=\"https://doi.org/10.1103/physrevb.111.064109\">10.1103/physrevb.111.064109</a>}, number={6064109}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Pionteck, Mike N. and Roeper, Matthias and Koppitz, Boris and Seddon, Samuel D. and Rüsing, Michael and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Sanna, Simone and Eng, Lukas M.}, year={2025} }","chicago":"Pionteck, Mike N., Matthias Roeper, Boris Koppitz, Samuel D. Seddon, Michael Rüsing, Laura Padberg, Christof Eigner, Christine Silberhorn, Simone Sanna, and Lukas M. Eng. “Second-Order Nonlinear Piezo-Optic Properties of Single Crystal Lithium Niobate Thin Films.” <i>Physical Review B</i> 111, no. 6 (2025). <a href=\"https://doi.org/10.1103/physrevb.111.064109\">https://doi.org/10.1103/physrevb.111.064109</a>.","ieee":"M. N. Pionteck <i>et al.</i>, “Second-order nonlinear piezo-optic properties of single crystal lithium niobate thin films,” <i>Physical Review B</i>, vol. 111, no. 6, Art. no. 064109, 2025, doi: <a href=\"https://doi.org/10.1103/physrevb.111.064109\">10.1103/physrevb.111.064109</a>.","ama":"Pionteck MN, Roeper M, Koppitz B, et al. Second-order nonlinear piezo-optic properties of single crystal lithium niobate thin films. <i>Physical Review B</i>. 2025;111(6). doi:<a href=\"https://doi.org/10.1103/physrevb.111.064109\">10.1103/physrevb.111.064109</a>"},"publication_identifier":{"issn":["2469-9950","2469-9969"]},"quality_controlled":"1","publication_status":"published","issue":"6"},{"abstract":[{"text":"We present the design and characterization of a guided-wave, bright, and highly frequency non-degenerate parametric down-conversion (PDC) source in thin-film lithium niobate. The source generates photon pairs with wavelengths of 815 nm and 1550 nm, linking the visible wavelength regime with telecommunication wavelengths. We confirm the high quality of the generated single photons by determining a value for the heralded second-order correlation function as low as g_h^(2)=(6.7+/-1.1)*10^8-3). Furthermore, we achieve a high spectral brightness of 0.44·10pairs/(smWGHz) which is two orders of magnitude higher than sources based on weakly guiding waveguides. The shape of the PDC spectrum and the strong agreement between the effective and nominal bandwidth highlight our high fabrication quality of periodically poled waveguides. The good agreement between the measured and simulated spectral characteristics of our source demonstrates our excellent understanding of the PDC process. Our result is a valuable step towards practical and scalable quantum communication networks as well as photonic quantum computing.","lang":"eng"}],"publication":"Optics Express","language":[{"iso":"eng"}],"year":"2025","issue":"25","title":"Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths","publisher":"Optica Publishing Group","date_created":"2025-12-15T07:20:36Z","status":"public","type":"journal_article","article_number":"52729","article_type":"original","_id":"63091","department":[{"_id":"288"},{"_id":"623"}],"user_id":"63231","intvolume":"        33","citation":{"ieee":"S. Babel <i>et al.</i>, “Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths,” <i>Optics Express</i>, vol. 33, no. 25, Art. no. 52729, 2025, doi: <a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>.","chicago":"Babel, Silia, Laura Bollmers, Franz Roeder, Werner Ridder, Christian Golla, Ronja Köthemann, Bernhard Reineke, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.” <i>Optics Express</i> 33, no. 25 (2025). <a href=\"https://doi.org/10.1364/oe.571605\">https://doi.org/10.1364/oe.571605</a>.","ama":"Babel S, Bollmers L, Roeder F, et al. Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths. <i>Optics Express</i>. 2025;33(25). doi:<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>","short":"S. Babel, L. Bollmers, F. Roeder, W. Ridder, C. Golla, R. Köthemann, B. Reineke, H. Herrmann, B. Brecht, C. Eigner, L. Padberg, C. Silberhorn, Optics Express 33 (2025).","bibtex":"@article{Babel_Bollmers_Roeder_Ridder_Golla_Köthemann_Reineke_Herrmann_Brecht_Eigner_et al._2025, title={Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths}, volume={33}, DOI={<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>}, number={2552729}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel, Silia and Bollmers, Laura and Roeder, Franz and Ridder, Werner and Golla, Christian and Köthemann, Ronja and Reineke, Bernhard and Herrmann, Harald and Brecht, Benjamin and Eigner, Christof and et al.}, year={2025} }","mla":"Babel, Silia, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.” <i>Optics Express</i>, vol. 33, no. 25, 52729, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/oe.571605\">10.1364/oe.571605</a>.","apa":"Babel, S., Bollmers, L., Roeder, F., Ridder, W., Golla, C., Köthemann, R., Reineke, B., Herrmann, H., Brecht, B., Eigner, C., Padberg, L., &#38; Silberhorn, C. (2025). Ultrabright, two-color photon pair source based on thin-film lithium niobate for bridging visible and telecom wavelengths. <i>Optics Express</i>, <i>33</i>(25), Article 52729. <a href=\"https://doi.org/10.1364/oe.571605\">https://doi.org/10.1364/oe.571605</a>"},"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","doi":"10.1364/oe.571605","main_file_link":[{"open_access":"1","url":"https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-25-52729"}],"date_updated":"2026-01-07T11:28:35Z","oa":"1","volume":33,"author":[{"first_name":"Silia","full_name":"Babel, Silia","id":"63231","orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel"},{"last_name":"Bollmers","id":"61375","full_name":"Bollmers, Laura","first_name":"Laura"},{"id":"88149","full_name":"Roeder, Franz","last_name":"Roeder","first_name":"Franz"},{"first_name":"Werner","last_name":"Ridder","id":"63574","full_name":"Ridder, Werner"},{"id":"40420","full_name":"Golla, Christian","last_name":"Golla","first_name":"Christian"},{"first_name":"Ronja","last_name":"Köthemann","full_name":"Köthemann, Ronja"},{"last_name":"Reineke","id":"29821","full_name":"Reineke, Bernhard","first_name":"Bernhard"},{"first_name":"Harald","last_name":"Herrmann","id":"216","full_name":"Herrmann, Harald"},{"first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}]},{"publisher":"Walter de Gruyter GmbH","date_created":"2025-12-01T08:45:07Z","title":"Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic poling in thin-film lithium niobate","quality_controlled":"1","year":"2025","language":[{"iso":"eng"}],"publication":"Nanophotonics","abstract":[{"text":"Periodically poled thin-film lithium niobate (TFLN) crystals are the fundamental building block for highly-efficient quantum light sources and frequency converters. The efficiency of these devices is strongly dependent on the interaction length between the light and the nonlinear material, scaling quadratically with this parameter. Nevertheless, the fabrication of long, continuously poled areas in TFLN remains challenging, the length of continuously poled areas rarely exceeds 10 mm. In this work, we demonstrate a significant progress in this field achieving the periodic poling of continuous poled areas of 70 mm length with a 3 μm poling period and a close to 50 % duty cycle. We compare two poling electrode design approaches to fabricate long, continuous poled areas. The first approach involves the poling of a single, continuous 70 mm long electrode. The second utilize a segmented approach including the poling of more than 20 individual sections forming together a 70 mm long poling area with no stitching errors. While the continuous electrode allows for faster fabrication, the segmented approach allows to individually optimize the poling resulting in less duty cycle variation. A detailed analysis of the periodic poling results reveals that the results of both are consistent with previously reported poling outcomes for shorter devices. Thus, we demonstrate wafer-scale periodic poling exceeding chiplet-size without any loss in the periodic poling quality. Our work presents a key step towards highly-efficient, narrow-bandwidth and low-pump power nonlinear optical devices.","lang":"eng"}],"oa":"1","date_updated":"2026-01-07T12:06:29Z","volume":14,"author":[{"last_name":"Bollmers","id":"61375","full_name":"Bollmers, Laura","first_name":"Laura"},{"first_name":"Noah","last_name":"Spiegelberg","full_name":"Spiegelberg, Noah"},{"id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","first_name":"Michael"},{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof","first_name":"Christof"},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"doi":"10.1515/nanoph-2025-0461","main_file_link":[{"url":"https://doi.org/10.1515/nanoph-2025-0461","open_access":"1"}],"publication_identifier":{"issn":["2192-8606","2192-8614"]},"publication_status":"published","page":"4761","intvolume":"        14","citation":{"ieee":"L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, and C. Silberhorn, “Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic poling in thin-film lithium niobate,” <i>Nanophotonics</i>, vol. 14, p. 4761, 2025, doi: <a href=\"https://doi.org/10.1515/nanoph-2025-0461\">10.1515/nanoph-2025-0461</a>.","chicago":"Bollmers, Laura, Noah Spiegelberg, Michael Rüsing, Christof Eigner, Laura Padberg, and Christine Silberhorn. “Segmented Finger Electrodes to Optimize Ultra-Long Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” <i>Nanophotonics</i> 14 (2025): 4761. <a href=\"https://doi.org/10.1515/nanoph-2025-0461\">https://doi.org/10.1515/nanoph-2025-0461</a>.","ama":"Bollmers L, Spiegelberg N, Rüsing M, Eigner C, Padberg L, Silberhorn C. Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic poling in thin-film lithium niobate. <i>Nanophotonics</i>. 2025;14:4761. doi:<a href=\"https://doi.org/10.1515/nanoph-2025-0461\">10.1515/nanoph-2025-0461</a>","apa":"Bollmers, L., Spiegelberg, N., Rüsing, M., Eigner, C., Padberg, L., &#38; Silberhorn, C. (2025). Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic poling in thin-film lithium niobate. <i>Nanophotonics</i>, <i>14</i>, 4761. <a href=\"https://doi.org/10.1515/nanoph-2025-0461\">https://doi.org/10.1515/nanoph-2025-0461</a>","short":"L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, C. Silberhorn, Nanophotonics 14 (2025) 4761.","bibtex":"@article{Bollmers_Spiegelberg_Rüsing_Eigner_Padberg_Silberhorn_2025, title={Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic poling in thin-film lithium niobate}, volume={14}, DOI={<a href=\"https://doi.org/10.1515/nanoph-2025-0461\">10.1515/nanoph-2025-0461</a>}, journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Bollmers, Laura and Spiegelberg, Noah and Rüsing, Michael and Eigner, Christof and Padberg, Laura and Silberhorn, Christine}, year={2025}, pages={4761} }","mla":"Bollmers, Laura, et al. “Segmented Finger Electrodes to Optimize Ultra-Long Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” <i>Nanophotonics</i>, vol. 14, Walter de Gruyter GmbH, 2025, p. 4761, doi:<a href=\"https://doi.org/10.1515/nanoph-2025-0461\">10.1515/nanoph-2025-0461</a>."},"_id":"62713","department":[{"_id":"15"},{"_id":"288"},{"_id":"623"}],"user_id":"22501","article_type":"original","type":"journal_article","status":"public"},{"article_number":"074402","file_date_updated":"2025-07-10T06:43:34Z","_id":"60566","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"name":"TRR 142 - A11: TRR 142 - Subproject A11","_id":"166"}],"department":[{"_id":"15"},{"_id":"623"},{"_id":"295"},{"_id":"790"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"170"},{"_id":"169"},{"_id":"27"}],"user_id":"22501","status":"public","type":"journal_article","doi":"10.1103/5wz1-bjyr","main_file_link":[{"url":"https://link.aps.org/doi/10.1103/5wz1-bjyr","open_access":"1"}],"date_updated":"2026-03-17T17:50:06Z","oa":"1","volume":9,"author":[{"first_name":"Adriana","id":"58349","full_name":"Bocchini, Adriana","last_name":"Bocchini","orcid":"0000-0002-2134-3075"},{"first_name":"Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577","full_name":"Rüsing, Michael","id":"22501"},{"first_name":"Laura","last_name":"Bollmers","id":"61375","full_name":"Bollmers, Laura"},{"full_name":"Lengeling, Sebastian","id":"44373","last_name":"Lengeling","first_name":"Sebastian"},{"first_name":"Philipp","full_name":"Mues, Philipp","id":"49772","last_name":"Mues","orcid":"0000-0003-0643-7636"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"full_name":"Gerstmann, Uwe","id":"171","last_name":"Gerstmann","orcid":"0000-0002-4476-223X","first_name":"Uwe"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"},{"last_name":"Schmidt","orcid":"0000-0002-2717-5076","id":"468","full_name":"Schmidt, Wolf Gero","first_name":"Wolf Gero"}],"intvolume":"         9","citation":{"bibtex":"@article{Bocchini_Rüsing_Bollmers_Lengeling_Mues_Padberg_Gerstmann_Silberhorn_Eigner_Schmidt_2025, title={Mg dopants in lithium niobate: Defect models and impact on domain inversion}, volume={9}, DOI={<a href=\"https://doi.org/10.1103/5wz1-bjyr\">10.1103/5wz1-bjyr</a>}, number={7074402}, journal={Physical Review Materials}, publisher={American Physical Society (APS)}, author={Bocchini, Adriana and Rüsing, Michael and Bollmers, Laura and Lengeling, Sebastian and Mues, Philipp and Padberg, Laura and Gerstmann, Uwe and Silberhorn, Christine and Eigner, Christof and Schmidt, Wolf Gero}, year={2025} }","short":"A. Bocchini, M. Rüsing, L. Bollmers, S. Lengeling, P. Mues, L. Padberg, U. Gerstmann, C. Silberhorn, C. Eigner, W.G. Schmidt, Physical Review Materials 9 (2025).","mla":"Bocchini, Adriana, et al. “Mg Dopants in Lithium Niobate: Defect Models and Impact on Domain Inversion.” <i>Physical Review Materials</i>, vol. 9, no. 7, 074402, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/5wz1-bjyr\">10.1103/5wz1-bjyr</a>.","ama":"Bocchini A, Rüsing M, Bollmers L, et al. Mg dopants in lithium niobate: Defect models and impact on domain inversion. <i>Physical Review Materials</i>. 2025;9(7). doi:<a href=\"https://doi.org/10.1103/5wz1-bjyr\">10.1103/5wz1-bjyr</a>","apa":"Bocchini, A., Rüsing, M., Bollmers, L., Lengeling, S., Mues, P., Padberg, L., Gerstmann, U., Silberhorn, C., Eigner, C., &#38; Schmidt, W. G. (2025). Mg dopants in lithium niobate: Defect models and impact on domain inversion. <i>Physical Review Materials</i>, <i>9</i>(7), Article 074402. <a href=\"https://doi.org/10.1103/5wz1-bjyr\">https://doi.org/10.1103/5wz1-bjyr</a>","chicago":"Bocchini, Adriana, Michael Rüsing, Laura Bollmers, Sebastian Lengeling, Philipp Mues, Laura Padberg, Uwe Gerstmann, Christine Silberhorn, Christof Eigner, and Wolf Gero Schmidt. “Mg Dopants in Lithium Niobate: Defect Models and Impact on Domain Inversion.” <i>Physical Review Materials</i> 9, no. 7 (2025). <a href=\"https://doi.org/10.1103/5wz1-bjyr\">https://doi.org/10.1103/5wz1-bjyr</a>.","ieee":"A. Bocchini <i>et al.</i>, “Mg dopants in lithium niobate: Defect models and impact on domain inversion,” <i>Physical Review Materials</i>, vol. 9, no. 7, Art. no. 074402, 2025, doi: <a href=\"https://doi.org/10.1103/5wz1-bjyr\">10.1103/5wz1-bjyr</a>."},"has_accepted_license":"1","publication_identifier":{"issn":["2475-9953"]},"publication_status":"published","ddc":["530"],"language":[{"iso":"eng"}],"file":[{"file_name":"Mg_dopants_LN_PRM.pdf","access_level":"open_access","file_id":"60567","file_size":4175120,"date_created":"2025-07-09T09:18:45Z","creator":"adrianab","date_updated":"2025-07-10T06:43:34Z","relation":"main_file","content_type":"application/pdf"}],"publication":"Physical Review Materials","title":"Mg dopants in lithium niobate: Defect models and impact on domain inversion","publisher":"American Physical Society (APS)","date_created":"2025-07-09T09:13:24Z","year":"2025","issue":"7"},{"publisher":"Optica Publishing Group","date_created":"2024-06-10T11:18:06Z","title":"Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides","issue":"13","year":"2024","keyword":["tet_topic_waveguide"],"ddc":["530"],"language":[{"iso":"eng"}],"publication":"Optics Express","abstract":[{"lang":"eng","text":"Samples of dielectric optical waveguides of rib or strip type in thin-film lithium niobate (TFLN) technology are characterized with respect to their optical loss using the Fabry-Pérot method. Attributing the losses mainly to sidewall roughness, we employ a simple perturbational procedure, based on rigorously computed mode profiles of idealized channels, to estimate the attenuation for waveguides with different cross sections. A single fit parameter suffices for an adequate modelling of the effect of the waveguide geometry on the loss levels."}],"file":[{"relation":"main_file","content_type":"application/pdf","access_level":"open_access","file_id":"54669","file_name":"2024-06 Hammer - Optics Express - Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides.pdf","file_size":4004782,"creator":"fossie","date_created":"2024-06-10T11:25:00Z","date_updated":"2024-06-10T11:25:00Z"}],"oa":"1","date_updated":"2024-07-22T07:43:02Z","volume":32,"author":[{"first_name":"Manfred","orcid":"0000-0002-6331-9348","last_name":"Hammer","full_name":"Hammer, Manfred","id":"48077"},{"first_name":"Silia","last_name":"Babel","orcid":"https://orcid.org/0000-0002-1568-2580","id":"63231","full_name":"Babel, Silia"},{"full_name":"Farheen, Henna","id":"53444","orcid":"0000-0001-7730-3489","last_name":"Farheen","first_name":"Henna"},{"id":"40300","full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura"},{"first_name":"J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","id":"37144","full_name":"Scheytt, J. Christoph"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens"}],"doi":"10.1364/oe.521766","publication_identifier":{"issn":["1094-4087"]},"has_accepted_license":"1","publication_status":"published","intvolume":"        32","page":"22878","citation":{"chicago":"Hammer, Manfred, Silia Babel, Henna Farheen, Laura Padberg, J. Christoph Scheytt, Christine Silberhorn, and Jens Förstner. “Estimation of Losses Caused by Sidewall Roughness in Thin-Film Lithium Niobate Rib and Strip Waveguides.” <i>Optics Express</i> 32, no. 13 (2024): 22878. <a href=\"https://doi.org/10.1364/oe.521766\">https://doi.org/10.1364/oe.521766</a>.","ieee":"M. Hammer <i>et al.</i>, “Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides,” <i>Optics Express</i>, vol. 32, no. 13, p. 22878, 2024, doi: <a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>.","ama":"Hammer M, Babel S, Farheen H, et al. Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides. <i>Optics Express</i>. 2024;32(13):22878. doi:<a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>","apa":"Hammer, M., Babel, S., Farheen, H., Padberg, L., Scheytt, J. C., Silberhorn, C., &#38; Förstner, J. (2024). Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides. <i>Optics Express</i>, <i>32</i>(13), 22878. <a href=\"https://doi.org/10.1364/oe.521766\">https://doi.org/10.1364/oe.521766</a>","mla":"Hammer, Manfred, et al. “Estimation of Losses Caused by Sidewall Roughness in Thin-Film Lithium Niobate Rib and Strip Waveguides.” <i>Optics Express</i>, vol. 32, no. 13, Optica Publishing Group, 2024, p. 22878, doi:<a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>.","bibtex":"@article{Hammer_Babel_Farheen_Padberg_Scheytt_Silberhorn_Förstner_2024, title={Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides}, volume={32}, DOI={<a href=\"https://doi.org/10.1364/oe.521766\">10.1364/oe.521766</a>}, number={13}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Hammer, Manfred and Babel, Silia and Farheen, Henna and Padberg, Laura and Scheytt, J. Christoph and Silberhorn, Christine and Förstner, Jens}, year={2024}, pages={22878} }","short":"M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner, Optics Express 32 (2024) 22878."},"_id":"54668","project":[{"grant_number":"231447078","_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"grant_number":"231447078","name":"TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI (C11*)","_id":"175"},{"grant_number":"231447078","name":"TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)","_id":"167"},{"name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266","grant_number":"PROFILNRW-2020-067"}],"department":[{"_id":"61"},{"_id":"429"},{"_id":"623"},{"_id":"263"},{"_id":"288"}],"user_id":"158","file_date_updated":"2024-06-10T11:25:00Z","type":"journal_article","status":"public"},{"volume":125,"author":[{"last_name":"Bollmers","full_name":"Bollmers, Laura","id":"61375","first_name":"Laura"},{"first_name":"Tobias","full_name":"Babai-Hemati, Tobias","last_name":"Babai-Hemati"},{"full_name":"Koppitz, Boris","last_name":"Koppitz","first_name":"Boris"},{"first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof"},{"first_name":"Laura","id":"40300","full_name":"Padberg, Laura","last_name":"Padberg"},{"last_name":"Rüsing","orcid":"0000-0003-4682-4577","id":"22501","full_name":"Rüsing, Michael","first_name":"Michael"},{"last_name":"Eng","full_name":"Eng, Lukas M.","first_name":"Lukas M."},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2024-11-13T08:06:59Z","publisher":"AIP Publishing","date_updated":"2024-11-15T09:15:08Z","doi":"10.1063/5.0210972","title":"Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals","issue":"15","publication_identifier":{"issn":["0003-6951","1077-3118"]},"publication_status":"published","intvolume":"       125","citation":{"apa":"Bollmers, L., Babai-Hemati, T., Koppitz, B., Eigner, C., Padberg, L., Rüsing, M., Eng, L. M., &#38; Silberhorn, C. (2024). Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals. <i>Applied Physics Letters</i>, <i>125</i>(15). <a href=\"https://doi.org/10.1063/5.0210972\">https://doi.org/10.1063/5.0210972</a>","bibtex":"@article{Bollmers_Babai-Hemati_Koppitz_Eigner_Padberg_Rüsing_Eng_Silberhorn_2024, title={Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals}, volume={125}, DOI={<a href=\"https://doi.org/10.1063/5.0210972\">10.1063/5.0210972</a>}, number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Bollmers, Laura and Babai-Hemati, Tobias and Koppitz, Boris and Eigner, Christof and Padberg, Laura and Rüsing, Michael and Eng, Lukas M. and Silberhorn, Christine}, year={2024} }","mla":"Bollmers, Laura, et al. “Surface-near Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.” <i>Applied Physics Letters</i>, vol. 125, no. 15, AIP Publishing, 2024, doi:<a href=\"https://doi.org/10.1063/5.0210972\">10.1063/5.0210972</a>.","short":"L. Bollmers, T. Babai-Hemati, B. Koppitz, C. Eigner, L. Padberg, M. Rüsing, L.M. Eng, C. Silberhorn, Applied Physics Letters 125 (2024).","ama":"Bollmers L, Babai-Hemati T, Koppitz B, et al. Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals. <i>Applied Physics Letters</i>. 2024;125(15). doi:<a href=\"https://doi.org/10.1063/5.0210972\">10.1063/5.0210972</a>","chicago":"Bollmers, Laura, Tobias Babai-Hemati, Boris Koppitz, Christof Eigner, Laura Padberg, Michael Rüsing, Lukas M. Eng, and Christine Silberhorn. “Surface-near Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.” <i>Applied Physics Letters</i> 125, no. 15 (2024). <a href=\"https://doi.org/10.1063/5.0210972\">https://doi.org/10.1063/5.0210972</a>.","ieee":"L. Bollmers <i>et al.</i>, “Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals,” <i>Applied Physics Letters</i>, vol. 125, no. 15, 2024, doi: <a href=\"https://doi.org/10.1063/5.0210972\">10.1063/5.0210972</a>."},"year":"2024","department":[{"_id":"15"},{"_id":"623"},{"_id":"230"},{"_id":"288"}],"user_id":"61375","_id":"57028","project":[{"_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","grant_number":"231447078"}],"language":[{"iso":"eng"}],"publication":"Applied Physics Letters","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"<jats:p>Lithium niobate and lithium tantalate are among the most widespread materials for nonlinear, integrated photonics. Mixed crystals with arbitrary Nb–Ta ratios provide an additional degree of freedom to not only tune materials properties, such as the birefringence but also leverage the advantages of the singular compounds, for example, by combining the thermal stability of lithium tantalate with the larger nonlinear or piezoelectric constants of lithium niobate. Periodic poling allows to achieve phase-matching independent of waveguide geometry and is, therefore, one of the commonly used methods in integrated nonlinear optics. For mixed crystals, periodic poling has been challenging so far due to the lack of homogeneous, mono-domain crystals, which severely inhibit domain growth and nucleation. In this work, we investigate surface-near (&amp;lt;1μm depth) domain inversion on x-cut lithium niobate tantalate mixed crystals via electric field poling and lithographically structured electrodes. We find that naturally occurring head-to-head or tail-to-tail domain walls in the as-grown crystal inhibit domain inversion at a larger scale. However, periodic poling is possible if the gap size between the poling electrodes is of the same order of magnitude or smaller than the average size of naturally occurring domains. This work provides the basis for the nonlinear optical application of lithium niobate tantalate mixed crystals.</jats:p>"}]},{"status":"public","type":"misc","language":[{"iso":"eng"}],"user_id":"22501","department":[{"_id":"288"},{"_id":"15"},{"_id":"623"}],"_id":"59259","citation":{"ieee":"T. Schwabe <i>et al.</i>, <i>Quantum photonic systems in CMOS compatible silicon nitride technology </i>. Zenodo, 2024.","chicago":"Schwabe, Tobias, Michael Rüsing, Niels Staal, Max Schwengelbeck, Laura Bollmers, Laura Padberg, Christof Eigner, Christine Silberhorn, and J. Christoph Scheytt. <i>Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology </i>. Zenodo, 2024. <a href=\"https://doi.org/10.5281/zenodo.15124929\">https://doi.org/10.5281/zenodo.15124929</a>.","ama":"Schwabe T, Rüsing M, Staal N, et al. <i>Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology </i>. Zenodo; 2024. doi:<a href=\"https://doi.org/10.5281/zenodo.15124929\">10.5281/zenodo.15124929</a>","apa":"Schwabe, T., Rüsing, M., Staal, N., Schwengelbeck, M., Bollmers, L., Padberg, L., Eigner, C., Silberhorn, C., &#38; Scheytt, J. C. (2024). <i>Quantum photonic systems in CMOS compatible silicon nitride technology </i>. Zenodo. <a href=\"https://doi.org/10.5281/zenodo.15124929\">https://doi.org/10.5281/zenodo.15124929</a>","bibtex":"@book{Schwabe_Rüsing_Staal_Schwengelbeck_Bollmers_Padberg_Eigner_Silberhorn_Scheytt_2024, title={Quantum photonic systems in CMOS compatible silicon nitride technology }, DOI={<a href=\"https://doi.org/10.5281/zenodo.15124929\">10.5281/zenodo.15124929</a>}, publisher={Zenodo}, author={Schwabe, Tobias and Rüsing, Michael and Staal, Niels and Schwengelbeck, Max and Bollmers, Laura and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }","mla":"Schwabe, Tobias, et al. <i>Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology </i>. Zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/zenodo.15124929\">10.5281/zenodo.15124929</a>.","short":"T. Schwabe, M. Rüsing, N. Staal, M. Schwengelbeck, L. Bollmers, L. Padberg, C. Eigner, C. Silberhorn, J.C. Scheytt, Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology , Zenodo, 2024."},"year":"2024","doi":"10.5281/zenodo.15124929","title":"Quantum photonic systems in CMOS compatible silicon nitride technology ","date_created":"2025-04-02T11:24:23Z","author":[{"first_name":"Tobias","id":"39217","full_name":"Schwabe, Tobias","last_name":"Schwabe"},{"first_name":"Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","full_name":"Rüsing, Michael","id":"22501"},{"first_name":"Niels","full_name":"Staal, Niels","last_name":"Staal"},{"full_name":"Schwengelbeck, Max","last_name":"Schwengelbeck","first_name":"Max"},{"last_name":"Bollmers","full_name":"Bollmers, Laura","id":"61375","first_name":"Laura"},{"first_name":"Laura","id":"40300","full_name":"Padberg, Laura","last_name":"Padberg"},{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"J. Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","full_name":"Scheytt, J. Christoph","id":"37144"}],"date_updated":"2025-04-03T12:34:56Z","publisher":"Zenodo"},{"type":"journal_article","publication":"New Journal of Physics","status":"public","abstract":[{"text":"The latest applications in ultrafast quantum metrology require bright, broadband bi-photon sources with one of the photons in the mid-infrared and the other in the visible to near infrared. However, existing sources based on bulk crystals are limited in brightness due to the short interaction length and only allow for limited dispersion engineering. Here, we present an integrated PDC source based on a Ti:LiNbO3 waveguide that generates broadband bi-photons with central wavelengths at 860 nm and 2800 nm. Their spectral bandwidth exceeds 25 THz and is achieved by simultaneous matching of the group velocities (GVs) and cancellation of GV dispersion for the signal and idler field. We provide an intuitive understanding of the process by studying our source’s behavior at different temperatures and pump wavelengths, which agrees well with simulations.","lang":"eng"}],"user_id":"78890","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"project":[{"_id":"571","name":"MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing"},{"name":"E2TPA: Exploiting Entangled Two-Photon Absorption","_id":"190"}],"_id":"57862","language":[{"iso":"eng"}],"article_number":"123025","article_type":"original","issue":"12","publication_status":"published","publication_identifier":{"issn":["1367-2630"]},"citation":{"chicago":"Roeder, Franz, Abira Gnanavel, René Pollmann, Olga Brecht, Michael Stefszky, Laura Padberg, Christof Eigner, Christine Silberhorn, and Benjamin Brecht. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” <i>New Journal of Physics</i> 26, no. 12 (2024). <a href=\"https://doi.org/10.1088/1367-2630/ad9f98\">https://doi.org/10.1088/1367-2630/ad9f98</a>.","ieee":"F. Roeder <i>et al.</i>, “Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared,” <i>New Journal of Physics</i>, vol. 26, no. 12, Art. no. 123025, 2024, doi: <a href=\"https://doi.org/10.1088/1367-2630/ad9f98\">10.1088/1367-2630/ad9f98</a>.","ama":"Roeder F, Gnanavel A, Pollmann R, et al. Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared. <i>New Journal of Physics</i>. 2024;26(12). doi:<a href=\"https://doi.org/10.1088/1367-2630/ad9f98\">10.1088/1367-2630/ad9f98</a>","apa":"Roeder, F., Gnanavel, A., Pollmann, R., Brecht, O., Stefszky, M., Padberg, L., Eigner, C., Silberhorn, C., &#38; Brecht, B. (2024). Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared. <i>New Journal of Physics</i>, <i>26</i>(12), Article 123025. <a href=\"https://doi.org/10.1088/1367-2630/ad9f98\">https://doi.org/10.1088/1367-2630/ad9f98</a>","mla":"Roeder, Franz, et al. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” <i>New Journal of Physics</i>, vol. 26, no. 12, 123025, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.1088/1367-2630/ad9f98\">10.1088/1367-2630/ad9f98</a>.","short":"F. Roeder, A. Gnanavel, R. Pollmann, O. Brecht, M. Stefszky, L. Padberg, C. Eigner, C. Silberhorn, B. Brecht, New Journal of Physics 26 (2024).","bibtex":"@article{Roeder_Gnanavel_Pollmann_Brecht_Stefszky_Padberg_Eigner_Silberhorn_Brecht_2024, title={Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared}, volume={26}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/ad9f98\">10.1088/1367-2630/ad9f98</a>}, number={12123025}, journal={New Journal of Physics}, publisher={IOP Publishing}, author={Roeder, Franz and Gnanavel, Abira and Pollmann, René and Brecht, Olga and Stefszky, Michael and Padberg, Laura and Eigner, Christof and Silberhorn, Christine and Brecht, Benjamin}, year={2024} }"},"intvolume":"        26","year":"2024","author":[{"last_name":"Roeder","id":"88149","full_name":"Roeder, Franz","first_name":"Franz"},{"full_name":"Gnanavel, Abira","last_name":"Gnanavel","first_name":"Abira"},{"last_name":"Pollmann","id":"78890","full_name":"Pollmann, René","first_name":"René"},{"last_name":"Brecht","full_name":"Brecht, Olga","first_name":"Olga"},{"first_name":"Michael","full_name":"Stefszky, Michael","id":"42777","last_name":"Stefszky"},{"first_name":"Laura","id":"40300","full_name":"Padberg, Laura","last_name":"Padberg"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"},{"full_name":"Brecht, Benjamin","id":"27150","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"}],"date_created":"2024-12-27T19:01:14Z","volume":26,"publisher":"IOP Publishing","date_updated":"2025-12-19T11:36:36Z","doi":"10.1088/1367-2630/ad9f98","title":"Ultra-broadband non-degenerate guided-wave bi-photon source in the near and mid-infrared"},{"doi":"10.3390/cryst13101423","main_file_link":[{"url":"https://doi.org/10.3390/cryst13101423","open_access":"1"}],"oa":"1","date_updated":"2023-10-11T09:15:58Z","volume":13,"author":[{"last_name":"Neufeld","full_name":"Neufeld, Sergej","first_name":"Sergej"},{"last_name":"Gerstmann","orcid":"0000-0002-4476-223X","full_name":"Gerstmann, Uwe","id":"171","first_name":"Uwe"},{"first_name":"Laura","last_name":"Padberg","id":"40300","full_name":"Padberg, Laura"},{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"},{"last_name":"Berth","id":"53","full_name":"Berth, Gerhard","first_name":"Gerhard"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"full_name":"Eng, Lukas M.","last_name":"Eng","first_name":"Lukas M."},{"first_name":"Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468"},{"first_name":"Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing","full_name":"Rüsing, Michael","id":"22501"}],"intvolume":"        13","citation":{"bibtex":"@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023, title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family}, volume={13}, DOI={<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>}, number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing, Michael}, year={2023} }","short":"S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).","mla":"Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i>, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>.","apa":"Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn, C., Eng, L. M., Schmidt, W. G., &#38; Rüsing, M. (2023). Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>, <i>13</i>(10), Article 1423. <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>","chicago":"Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i> 13, no. 10 (2023). <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>.","ieee":"S. Neufeld <i>et al.</i>, “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family,” <i>Crystals</i>, vol. 13, no. 10, Art. no. 1423, 2023, doi: <a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>.","ama":"Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>. 2023;13(10). doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>"},"publication_identifier":{"issn":["2073-4352"]},"publication_status":"published","article_number":"1423","funded_apc":"1","_id":"47997","project":[{"grant_number":"231447078","_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"name":"TRR 142 - B: TRR 142 - Project Area B","_id":"55"},{"grant_number":"PROFILNRW-2020-067","_id":"266","name":"PhoQC: PhoQC: Photonisches Quantencomputing"}],"department":[{"_id":"169"}],"user_id":"22501","status":"public","type":"journal_article","title":"Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family","publisher":"MDPI AG","date_created":"2023-10-11T09:10:53Z","year":"2023","quality_controlled":"1","issue":"10","keyword":["Inorganic Chemistry","Condensed Matter Physics","General Materials Science","General Chemical Engineering"],"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising material group for applications in quantum and nonlinear optics. The fabrication of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric domain structures, requires a profound understanding of the material properties and crystal structure. In this regard, Raman spectroscopy offers the possibility to study and visualize domain structures, strain, defects, and the local stoichiometry, which are all factors impacting device performance. However, the accurate interpretation of Raman spectra and their changes with respect to extrinsic and intrinsic defects requires a thorough assignment of the Raman modes to their respective crystal features, which to date is only partly conducted based on phenomenological modelling. To address this issue, we calculated the phonon spectra of potassium titanyl phosphate and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium titanyl arsenate (KTiOAsO4) based on density functional theory and compared them with experimental data. Overall, this allows us to assign various spectral features to eigenmodes of lattice substructures with improved detail compared to previous assignments. Nevertheless, the analysis also shows that not all features of the spectra can unambigiously be explained yet. A possible explanation might be that defects or long range fields not included in the modeling play a crucial rule for the resulting Raman spectrum. In conclusion, this work provides an improved foundation into the vibrational properties in the KTiOPO4 material family."}],"publication":"Crystals"},{"publication":"Crystals","type":"journal_article","abstract":[{"lang":"eng","text":"<jats:p>The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising material group for applications in quantum and nonlinear optics. The fabrication of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric domain structures, requires a profound understanding of the material properties and crystal structure. In this regard, Raman spectroscopy offers the possibility to study and visualize domain structures, strain, defects, and the local stoichiometry, which are all factors impacting device performance. However, the accurate interpretation of Raman spectra and their changes with respect to extrinsic and intrinsic defects requires a thorough assignment of the Raman modes to their respective crystal features, which to date is only partly conducted based on phenomenological modelling. To address this issue, we calculated the phonon spectra of potassium titanyl phosphate and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium titanyl arsenate (KTiOAsO4) based on density functional theory and compared them with experimental data. Overall, this allows us to assign various spectral features to eigenmodes of lattice substructures with improved detail compared to previous assignments. Nevertheless, the analysis also shows that not all features of the spectra can unambigiously be explained yet. A possible explanation might be that defects or long range fields not included in the modeling play a crucial rule for the resulting Raman spectrum. In conclusion, this work provides an improved foundation into the vibrational properties in the KTiOPO4 material family.</jats:p>"}],"status":"public","_id":"54852","project":[{"grant_number":"231447078","_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"288"},{"_id":"230"},{"_id":"429"}],"user_id":"16199","article_number":"1423","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2073-4352"]},"publication_status":"published","issue":"10","year":"2023","intvolume":"        13","citation":{"short":"S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).","mla":"Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i>, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>.","bibtex":"@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023, title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family}, volume={13}, DOI={<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>}, number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing, Michael}, year={2023} }","apa":"Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn, C., Eng, L. M., Schmidt, W. G., &#38; Rüsing, M. (2023). Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>, <i>13</i>(10), Article 1423. <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>","ama":"Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family. <i>Crystals</i>. 2023;13(10). doi:<a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>","ieee":"S. Neufeld <i>et al.</i>, “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family,” <i>Crystals</i>, vol. 13, no. 10, Art. no. 1423, 2023, doi: <a href=\"https://doi.org/10.3390/cryst13101423\">10.3390/cryst13101423</a>.","chicago":"Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing. “Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” <i>Crystals</i> 13, no. 10 (2023). <a href=\"https://doi.org/10.3390/cryst13101423\">https://doi.org/10.3390/cryst13101423</a>."},"publisher":"MDPI AG","date_updated":"2024-06-24T06:30:23Z","volume":13,"author":[{"first_name":"Sergej","full_name":"Neufeld, Sergej","last_name":"Neufeld"},{"first_name":"Uwe","id":"171","full_name":"Gerstmann, Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann"},{"id":"40300","full_name":"Padberg, Laura","last_name":"Padberg","first_name":"Laura"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"full_name":"Berth, Gerhard","id":"53","last_name":"Berth","first_name":"Gerhard"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"first_name":"Lukas M.","full_name":"Eng, Lukas M.","last_name":"Eng"},{"last_name":"Schmidt","orcid":"0000-0002-2717-5076","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"},{"orcid":"0000-0003-4682-4577","last_name":"Rüsing","id":"22501","full_name":"Rüsing, Michael","first_name":"Michael"}],"date_created":"2024-06-24T06:15:00Z","title":"Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family","doi":"10.3390/cryst13101423"},{"issue":"14","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"citation":{"mla":"Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” <i>Optics Express</i>, vol. 31, no. 14, 23140, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>.","bibtex":"@article{Babel_Bollmers_Massaro_Luo_Stefszky_Pegoraro_Held_Herrmann_Eigner_Brecht_et al._2023, title={Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler}, volume={31}, DOI={<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>}, number={1423140}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel, Silia and Bollmers, Laura and Massaro, Marcello and Luo, Kai Hong and Stefszky, Michael and Pegoraro, Federico and Held, Philip and Herrmann, Harald and Eigner, Christof and Brecht, Benjamin and et al.}, year={2023} }","short":"S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P. Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express 31 (2023).","apa":"Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F., Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., &#38; Silberhorn, C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. <i>Optics Express</i>, <i>31</i>(14), Article 23140. <a href=\"https://doi.org/10.1364/oe.484126\">https://doi.org/10.1364/oe.484126</a>","ama":"Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler. <i>Optics Express</i>. 2023;31(14). doi:<a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>","ieee":"S. Babel <i>et al.</i>, “Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler,” <i>Optics Express</i>, vol. 31, no. 14, Art. no. 23140, 2023, doi: <a href=\"https://doi.org/10.1364/oe.484126\">10.1364/oe.484126</a>.","chicago":"Babel, Silia, Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky, Federico Pegoraro, Philip Held, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI Directional Coupler.” <i>Optics Express</i> 31, no. 14 (2023). <a href=\"https://doi.org/10.1364/oe.484126\">https://doi.org/10.1364/oe.484126</a>."},"intvolume":"        31","year":"2023","date_created":"2023-07-03T14:08:36Z","author":[{"full_name":"Babel, Silia","id":"63231","orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel","first_name":"Silia"},{"first_name":"Laura","last_name":"Bollmers","id":"61375","full_name":"Bollmers, Laura"},{"first_name":"Marcello","last_name":"Massaro","orcid":"0000-0002-2539-7652","full_name":"Massaro, Marcello","id":"59545"},{"full_name":"Luo, Kai Hong","id":"36389","orcid":"0000-0003-1008-4976","last_name":"Luo","first_name":"Kai Hong"},{"last_name":"Stefszky","id":"42777","full_name":"Stefszky, Michael","first_name":"Michael"},{"full_name":"Pegoraro, Federico","id":"88928","last_name":"Pegoraro","first_name":"Federico"},{"last_name":"Held","full_name":"Held, Philip","id":"68236","first_name":"Philip"},{"first_name":"Harald","full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann"},{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"volume":31,"publisher":"Optica Publishing Group","date_updated":"2023-07-05T07:58:31Z","doi":"10.1364/oe.484126","title":"Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler","type":"journal_article","publication":"Optics Express","status":"public","abstract":[{"text":"Interference between single photons is key for many quantum optics experiments and applications in quantum technologies, such as quantum communication or computation. It is advantageous to operate the systems at telecommunication wavelengths and to integrate the setups for these applications in order to improve stability, compactness and scalability. A new promising material platform for integrated quantum optics is lithium niobate on insulator (LNOI). Here, we realise Hong-Ou-Mandel (HOM) interference between telecom photons from an engineered parametric down-conversion source in an LNOI directional coupler. The coupler has been designed and fabricated in house and provides close to perfect balanced beam splitting. We obtain a raw HOM visibility of (93.5 ± 0.7) %, limited mainly by the source performance and in good agreement with off-chip measurements. This lays the foundation for more sophisticated quantum experiments in LNOI.","lang":"eng"}],"user_id":"63231","department":[{"_id":"15"},{"_id":"230"},{"_id":"623"},{"_id":"288"}],"_id":"45850","language":[{"iso":"eng"}],"article_number":"23140","keyword":["Atomic and Molecular Physics","and Optics"]},{"title":"Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance","doi":"10.1364/cleo_at.2023.jw2a.57","publisher":"Optica Publishing Group","date_updated":"2025-09-18T12:08:56Z","date_created":"2025-09-18T12:06:19Z","author":[{"orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"first_name":"Viktor","full_name":"Quiring, Viktor","last_name":"Quiring"},{"first_name":"Adriana","last_name":"Bocchini","orcid":"0000-0002-2134-3075","full_name":"Bocchini, Adriana","id":"58349"},{"first_name":"Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","id":"55095","full_name":"Santandrea, Matteo"},{"last_name":"Gerstmann","orcid":"0000-0002-4476-223X","full_name":"Gerstmann, Uwe","id":"171","first_name":"Uwe"},{"first_name":"Wolf Gero","id":"468","full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt"},{"first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn"}],"year":"2023","citation":{"apa":"Eigner, C., Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann, U., Schmidt, W. G., &#38; Silberhorn, C. (2023). Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. <i>CLEO 2023</i>. <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">https://doi.org/10.1364/cleo_at.2023.jw2a.57</a>","mla":"Eigner, Christof, et al. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” <i>CLEO 2023</i>, Optica Publishing Group, 2023, doi:<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>.","short":"C. Eigner, L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt, C. Silberhorn, in: CLEO 2023, Optica Publishing Group, 2023.","bibtex":"@inproceedings{Eigner_Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_2023, title={Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance}, DOI={<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>}, booktitle={CLEO 2023}, publisher={Optica Publishing Group}, author={Eigner, Christof and Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine}, year={2023} }","chicago":"Eigner, Christof, Laura Padberg, Viktor Quiring, Adriana Bocchini, Matteo Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, and Christine Silberhorn. “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.” In <i>CLEO 2023</i>. Optica Publishing Group, 2023. <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">https://doi.org/10.1364/cleo_at.2023.jw2a.57</a>.","ieee":"C. Eigner <i>et al.</i>, “Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance,” 2023, doi: <a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>.","ama":"Eigner C, Padberg L, Quiring V, et al. Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance. In: <i>CLEO 2023</i>. Optica Publishing Group; 2023. doi:<a href=\"https://doi.org/10.1364/cleo_at.2023.jw2a.57\">10.1364/cleo_at.2023.jw2a.57</a>"},"publication_status":"published","language":[{"iso":"eng"}],"_id":"61362","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":"168","name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"name":"TRR 142 - Subproject A11","_id":"166"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"27"}],"user_id":"16199","abstract":[{"text":"<jats:p>We study the interaction of gray tracking and DC ionic conductivity in Potassium Titanyl Phosphate (KTiOPO<jats:sub>4</jats:sub>, KTP) and present a novel way to reduce conductivity via a potassium nitrate treatment improving the device quality.</jats:p>","lang":"eng"}],"status":"public","publication":"CLEO 2023","type":"conference"},{"language":[{"iso":"eng"}],"_id":"33484","project":[{"name":"TRR 142: TRR 142","_id":"53"},{"name":"TRR 142 - B: TRR 142 - Project Area B","_id":"55"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"TRR 142 - B07: TRR 142 - Subproject B07","_id":"168"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A11: TRR 142 - Subproject A11","_id":"166"}],"department":[{"_id":"15"},{"_id":"288"},{"_id":"623"},{"_id":"170"},{"_id":"295"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"790"}],"user_id":"171","abstract":[{"lang":"eng","text":"We study the DC conductivity in potassium titanyl phosphate (KTiOPO4, KTP) and its isomorphs KTiOAsO4 (KTA) and Rb1%K99%TiOPO4 (RKTP) and introduce a method by which to reduce the overall ionic conductivity in KTP by a potassium nitrate treatment. Furthermore, we create so-called gray tracking in KTP and investigate the ionic conductivity in theses areas. A local unintended reduction of the ionic conductivity is observed in the gray-tracked regions, which also induce additional optical absorption in the material. We show that a thermal treatment in an oxygen-rich atmosphere removes the gray tracking and brings the ionic conductivity as well as the optical transmission back to the original level. These studies can help to choose the best material and treatment for specific applications."}],"status":"public","publication":"Crystals","type":"journal_article","title":"DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking","doi":"10.3390/cryst12101359","main_file_link":[{"open_access":"1"}],"oa":"1","date_updated":"2023-04-21T11:07:11Z","volume":12,"date_created":"2022-09-26T13:12:48Z","author":[{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"full_name":"Quiring, Viktor","last_name":"Quiring","first_name":"Viktor"},{"full_name":"Bocchini, Adriana","id":"58349","orcid":"0000-0002-2134-3075","last_name":"Bocchini","first_name":"Adriana"},{"first_name":"Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","id":"55095"},{"id":"171","full_name":"Gerstmann, Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann","first_name":"Uwe"},{"first_name":"Wolf Gero","id":"468","full_name":"Schmidt, Wolf Gero","last_name":"Schmidt","orcid":"0000-0002-2717-5076"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"},{"first_name":"Christof","id":"13244","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"}],"year":"2022","page":"1359","intvolume":"        12","citation":{"ama":"Padberg L, Quiring V, Bocchini A, et al. DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking. <i>Crystals</i>. 2022;12:1359. doi:<a href=\"https://doi.org/10.3390/cryst12101359\">10.3390/cryst12101359</a>","ieee":"L. Padberg <i>et al.</i>, “DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking,” <i>Crystals</i>, vol. 12, p. 1359, 2022, doi: <a href=\"https://doi.org/10.3390/cryst12101359\">10.3390/cryst12101359</a>.","chicago":"Padberg, Laura, Viktor Quiring, Adriana Bocchini, Matteo Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, Christine Silberhorn, and Christof Eigner. “DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking.” <i>Crystals</i> 12 (2022): 1359. <a href=\"https://doi.org/10.3390/cryst12101359\">https://doi.org/10.3390/cryst12101359</a>.","mla":"Padberg, Laura, et al. “DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking.” <i>Crystals</i>, vol. 12, 2022, p. 1359, doi:<a href=\"https://doi.org/10.3390/cryst12101359\">10.3390/cryst12101359</a>.","bibtex":"@article{Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_Eigner_2022, title={DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking}, volume={12}, DOI={<a href=\"https://doi.org/10.3390/cryst12101359\">10.3390/cryst12101359</a>}, journal={Crystals}, author={Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine and Eigner, Christof}, year={2022}, pages={1359} }","short":"L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt, C. Silberhorn, C. Eigner, Crystals 12 (2022) 1359.","apa":"Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann, U., Schmidt, W. G., Silberhorn, C., &#38; Eigner, C. (2022). DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking. <i>Crystals</i>, <i>12</i>, 1359. <a href=\"https://doi.org/10.3390/cryst12101359\">https://doi.org/10.3390/cryst12101359</a>"},"publication_identifier":{"issn":["2073-4352"]}},{"doi":"10.3390/cryst11091086","title":"Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging","author":[{"last_name":"Brockmeier","full_name":"Brockmeier, Julian","id":"44807","first_name":"Julian"},{"full_name":"Mackwitz, Peter Walter Martin","last_name":"Mackwitz","first_name":"Peter Walter Martin"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing"},{"first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","id":"13244"},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"first_name":"Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","id":"55095"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944"},{"first_name":"Gerhard","last_name":"Berth","id":"53","full_name":"Berth, Gerhard"}],"date_created":"2021-09-07T08:09:36Z","date_updated":"2023-10-06T07:40:37Z","citation":{"ieee":"J. Brockmeier <i>et al.</i>, “Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging,” <i>Crystals</i>, Art. no. 1086, 2021, doi: <a href=\"https://doi.org/10.3390/cryst11091086\">10.3390/cryst11091086</a>.","chicago":"Brockmeier, Julian, Peter Walter Martin Mackwitz, Michael Rüsing, Christof Eigner, Laura Padberg, Matteo Santandrea, Christine Silberhorn, Artur Zrenner, and Gerhard Berth. “Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging.” <i>Crystals</i>, 2021. <a href=\"https://doi.org/10.3390/cryst11091086\">https://doi.org/10.3390/cryst11091086</a>.","ama":"Brockmeier J, Mackwitz PWM, Rüsing M, et al. Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging. <i>Crystals</i>. Published online 2021. doi:<a href=\"https://doi.org/10.3390/cryst11091086\">10.3390/cryst11091086</a>","apa":"Brockmeier, J., Mackwitz, P. W. M., Rüsing, M., Eigner, C., Padberg, L., Santandrea, M., Silberhorn, C., Zrenner, A., &#38; Berth, G. (2021). Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging. <i>Crystals</i>, Article 1086. <a href=\"https://doi.org/10.3390/cryst11091086\">https://doi.org/10.3390/cryst11091086</a>","short":"J. Brockmeier, P.W.M. Mackwitz, M. Rüsing, C. Eigner, L. Padberg, M. Santandrea, C. Silberhorn, A. Zrenner, G. Berth, Crystals (2021).","mla":"Brockmeier, Julian, et al. “Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging.” <i>Crystals</i>, 1086, 2021, doi:<a href=\"https://doi.org/10.3390/cryst11091086\">10.3390/cryst11091086</a>.","bibtex":"@article{Brockmeier_Mackwitz_Rüsing_Eigner_Padberg_Santandrea_Silberhorn_Zrenner_Berth_2021, title={Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging}, DOI={<a href=\"https://doi.org/10.3390/cryst11091086\">10.3390/cryst11091086</a>}, number={1086}, journal={Crystals}, author={Brockmeier, Julian and Mackwitz, Peter Walter Martin and Rüsing, Michael and Eigner, Christof and Padberg, Laura and Santandrea, Matteo and Silberhorn, Christine and Zrenner, Artur and Berth, Gerhard}, year={2021} }"},"year":"2021","publication_status":"published","publication_identifier":{"issn":["2073-4352"]},"language":[{"iso":"eng"}],"article_number":"1086","user_id":"13244","department":[{"_id":"15"},{"_id":"288"}],"_id":"23826","status":"public","abstract":[{"lang":"eng","text":"<jats:p>Potassium titanyl phosphate (KTP) is a nonlinear optical material with applications in high-power frequency conversion or quasi-phase matching in submicron period domain grids. A prerequisite for these applications is a precise control and understanding of the poling mechanisms to enable the fabrication of high-grade domain grids. In contrast to the widely used material lithium niobate, the domain growth in KTP is less studied, because many standard methods, such as selective etching or polarization microscopy, provides less insight or are not applicable on non-polar surfaces, respectively. In this work, we present results of confocal Raman-spectroscopy of the ferroelectric domain structure in KTP. This analytical method allows for the visualization of domain grids of the non-polar KTP y-face and therefore more insight into the domain-growth and -structure in KTP, which can be used for improved domain fabrication.</jats:p>"}],"type":"journal_article","publication":"Crystals"},{"_id":"38135","publication_date":"2021-02-04","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"user_id":"40300","status":"public","type":"patent","ipn":"US 2021/0033944 A1","title":"Production of waveguides made of materials from the KTP family","ipc":"G02F 1/355","date_updated":"2023-01-23T14:35:06Z","date_created":"2023-01-23T14:34:53Z","author":[{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244"},{"full_name":"Santandrea, Matteo ","last_name":"Santandrea","first_name":"Matteo "},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"year":"2021","citation":{"apa":"Padberg, L., Eigner, C., Santandrea, M., &#38; Silberhorn, C. (2021). <i>Production of waveguides made of materials from the KTP family</i>.","short":"L. Padberg, C. Eigner, M. Santandrea, C. Silberhorn, (2021).","mla":"Padberg, Laura, et al. <i>Production of Waveguides Made of Materials from the KTP Family</i>. 2021.","bibtex":"@article{Padberg_Eigner_Santandrea_Silberhorn_2021, title={Production of waveguides made of materials from the KTP family}, author={Padberg, Laura and Eigner, Christof and Santandrea, Matteo  and Silberhorn, Christine}, year={2021} }","chicago":"Padberg, Laura, Christof Eigner, Matteo  Santandrea, and Christine Silberhorn. “Production of Waveguides Made of Materials from the KTP Family,” 2021.","ieee":"L. Padberg, C. Eigner, M. Santandrea, and C. Silberhorn, “Production of waveguides made of materials from the KTP family.” 2021.","ama":"Padberg L, Eigner C, Santandrea M, Silberhorn C. Production of waveguides made of materials from the KTP family. Published online 2021."}},{"language":[{"iso":"eng"}],"article_number":"24353","department":[{"_id":"15"},{"_id":"288"}],"user_id":"14931","_id":"25920","project":[{"name":"TRR 142 - Project Area B","_id":"55"}],"status":"public","publication":"Optics Express","type":"journal_article","doi":"10.1364/oe.397074","title":"Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides","date_created":"2021-10-08T11:12:36Z","author":[{"first_name":"Laura","last_name":"Padberg","full_name":"Padberg, Laura","id":"40300"},{"id":"55095","full_name":"Santandrea, Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","first_name":"Matteo"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing"},{"first_name":"Julian","id":"44807","full_name":"Brockmeier, Julian","last_name":"Brockmeier"},{"first_name":"Peter","last_name":"Mackwitz","full_name":"Mackwitz, Peter"},{"id":"53","full_name":"Berth, Gerhard","last_name":"Berth","first_name":"Gerhard"},{"orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606","first_name":"Artur"},{"id":"13244","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","first_name":"Christof"},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_updated":"2023-10-09T08:27:41Z","citation":{"ama":"Padberg L, Santandrea M, Rüsing M, et al. Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides. <i>Optics Express</i>. Published online 2020. doi:<a href=\"https://doi.org/10.1364/oe.397074\">10.1364/oe.397074</a>","chicago":"Padberg, Laura, Matteo Santandrea, Michael Rüsing, Julian Brockmeier, Peter Mackwitz, Gerhard Berth, Artur Zrenner, Christof Eigner, and Christine Silberhorn. “Characterisation of Width-Dependent Diffusion Dynamics in Rubidium-Exchanged KTP Waveguides.” <i>Optics Express</i>, 2020. <a href=\"https://doi.org/10.1364/oe.397074\">https://doi.org/10.1364/oe.397074</a>.","ieee":"L. Padberg <i>et al.</i>, “Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides,” <i>Optics Express</i>, Art. no. 24353, 2020, doi: <a href=\"https://doi.org/10.1364/oe.397074\">10.1364/oe.397074</a>.","apa":"Padberg, L., Santandrea, M., Rüsing, M., Brockmeier, J., Mackwitz, P., Berth, G., Zrenner, A., Eigner, C., &#38; Silberhorn, C. (2020). Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides. <i>Optics Express</i>, Article 24353. <a href=\"https://doi.org/10.1364/oe.397074\">https://doi.org/10.1364/oe.397074</a>","short":"L. Padberg, M. Santandrea, M. Rüsing, J. Brockmeier, P. Mackwitz, G. Berth, A. Zrenner, C. Eigner, C. Silberhorn, Optics Express (2020).","mla":"Padberg, Laura, et al. “Characterisation of Width-Dependent Diffusion Dynamics in Rubidium-Exchanged KTP Waveguides.” <i>Optics Express</i>, 24353, 2020, doi:<a href=\"https://doi.org/10.1364/oe.397074\">10.1364/oe.397074</a>.","bibtex":"@article{Padberg_Santandrea_Rüsing_Brockmeier_Mackwitz_Berth_Zrenner_Eigner_Silberhorn_2020, title={Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides}, DOI={<a href=\"https://doi.org/10.1364/oe.397074\">10.1364/oe.397074</a>}, number={24353}, journal={Optics Express}, author={Padberg, Laura and Santandrea, Matteo and Rüsing, Michael and Brockmeier, Julian and Mackwitz, Peter and Berth, Gerhard and Zrenner, Artur and Eigner, Christof and Silberhorn, Christine}, year={2020} }"},"year":"2020","publication_identifier":{"issn":["1094-4087"]},"publication_status":"published"},{"status":"public","type":"journal_article","publication":"Optics Express","language":[{"iso":"eng"}],"article_number":"32925-32935","user_id":"13244","department":[{"_id":"15"},{"_id":"230"},{"_id":"429"},{"_id":"288"}],"project":[{"name":"TRR 142 - B: TRR 142 - Project Area B","_id":"55"}],"_id":"21025","citation":{"ama":"Eigner C, Padberg L, Santandrea M, Herrmann H, Brecht B, Silberhorn C. Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides. <i>Optics Express</i>. 2020;28(22). doi:<a href=\"https://doi.org/10.1364/oe.399483\">10.1364/oe.399483</a>","chicago":"Eigner, Christof, Laura Padberg, Matteo Santandrea, Harald Herrmann, Benjamin Brecht, and Christine Silberhorn. “Spatially Single Mode Photon Pair Source at 800 Nm in Periodically Poled Rubidium Exchanged KTP Waveguides.” <i>Optics Express</i> 28, no. 22 (2020). <a href=\"https://doi.org/10.1364/oe.399483\">https://doi.org/10.1364/oe.399483</a>.","ieee":"C. Eigner, L. Padberg, M. Santandrea, H. Herrmann, B. Brecht, and C. Silberhorn, “Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides,” <i>Optics Express</i>, vol. 28, no. 22, Art. no. 32925–32935, 2020, doi: <a href=\"https://doi.org/10.1364/oe.399483\">10.1364/oe.399483</a>.","apa":"Eigner, C., Padberg, L., Santandrea, M., Herrmann, H., Brecht, B., &#38; Silberhorn, C. (2020). Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides. <i>Optics Express</i>, <i>28</i>(22), Article 32925–32935. <a href=\"https://doi.org/10.1364/oe.399483\">https://doi.org/10.1364/oe.399483</a>","bibtex":"@article{Eigner_Padberg_Santandrea_Herrmann_Brecht_Silberhorn_2020, title={Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides}, volume={28}, DOI={<a href=\"https://doi.org/10.1364/oe.399483\">10.1364/oe.399483</a>}, number={2232925–32935}, journal={Optics Express}, author={Eigner, Christof and Padberg, Laura and Santandrea, Matteo and Herrmann, Harald and Brecht, Benjamin and Silberhorn, Christine}, year={2020} }","short":"C. Eigner, L. Padberg, M. Santandrea, H. Herrmann, B. Brecht, C. Silberhorn, Optics Express 28 (2020).","mla":"Eigner, Christof, et al. “Spatially Single Mode Photon Pair Source at 800 Nm in Periodically Poled Rubidium Exchanged KTP Waveguides.” <i>Optics Express</i>, vol. 28, no. 22, 32925–32935, 2020, doi:<a href=\"https://doi.org/10.1364/oe.399483\">10.1364/oe.399483</a>."},"intvolume":"        28","year":"2020","issue":"22","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"doi":"10.1364/oe.399483","title":"Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides","author":[{"last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","full_name":"Eigner, Christof","id":"13244","first_name":"Christof"},{"first_name":"Laura","last_name":"Padberg","id":"40300","full_name":"Padberg, Laura"},{"orcid":"0000-0001-5718-358X","last_name":"Santandrea","full_name":"Santandrea, Matteo","id":"55095","first_name":"Matteo"},{"first_name":"Harald","full_name":"Herrmann, Harald","id":"216","last_name":"Herrmann"},{"first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150","full_name":"Brecht, Benjamin"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2021-01-20T08:35:45Z","volume":28,"date_updated":"2023-02-01T12:46:27Z"},{"date_created":"2023-01-23T14:38:17Z","author":[{"full_name":"Padberg, Laura","id":"40300","last_name":"Padberg","first_name":"Laura"},{"first_name":"Christof","last_name":"Eigner","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244","full_name":"Eigner, Christof"},{"last_name":"Santandrea","full_name":"Santandrea, Matteo","first_name":"Matteo"},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"ipc":"C30B 31/04","date_updated":"2023-01-23T14:38:21Z","title":"Herstellung von Wellenleitern aus Materialien der KTP-Familie","ipn":"DE 10 2018 108 636 A1","citation":{"ama":"Padberg L, Eigner C, Santandrea M, Silberhorn C. Herstellung von Wellenleitern aus Materialien der KTP-Familie. Published online 2019.","ieee":"L. Padberg, C. Eigner, M. Santandrea, and C. Silberhorn, “Herstellung von Wellenleitern aus Materialien der KTP-Familie.” 2019.","chicago":"Padberg, Laura, Christof Eigner, Matteo Santandrea, and Christine Silberhorn. “Herstellung von Wellenleitern Aus Materialien Der KTP-Familie,” 2019.","mla":"Padberg, Laura, et al. <i>Herstellung von Wellenleitern Aus Materialien Der KTP-Familie</i>. 2019.","bibtex":"@article{Padberg_Eigner_Santandrea_Silberhorn_2019, title={Herstellung von Wellenleitern aus Materialien der KTP-Familie}, author={Padberg, Laura and Eigner, Christof and Santandrea, Matteo and Silberhorn, Christine}, year={2019} }","short":"L. Padberg, C. Eigner, M. Santandrea, C. Silberhorn, (2019).","apa":"Padberg, L., Eigner, C., Santandrea, M., &#38; Silberhorn, C. (2019). <i>Herstellung von Wellenleitern aus Materialien der KTP-Familie</i>."},"year":"2019","department":[{"_id":"288"},{"_id":"623"},{"_id":"15"}],"user_id":"40300","_id":"38138","publication_date":"2019-10-17","type":"patent","status":"public"},{"_id":"9614","user_id":"13244","article_number":"28827","language":[{"iso":"eng"}],"type":"journal_article","publication":"Optics Express","status":"public","date_updated":"2022-01-06T07:04:17Z","date_created":"2019-05-06T09:08:47Z","author":[{"first_name":"Christof","full_name":"Eigner, Christof","id":"13244","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner"},{"last_name":"Santandrea","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","id":"55095","first_name":"Matteo"},{"first_name":"Laura","full_name":"Padberg, Laura","id":"40300","last_name":"Padberg"},{"first_name":"Martin F.","full_name":"Volk, Martin F.","last_name":"Volk"},{"last_name":"Rüter","full_name":"Rüter, Christian E.","first_name":"Christian E."},{"first_name":"Harald","last_name":"Herrmann","full_name":"Herrmann, Harald","id":"216"},{"first_name":"Detlef","last_name":"Kip","full_name":"Kip, Detlef"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"title":"Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime","doi":"10.1364/oe.26.028827","publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"year":"2018","citation":{"apa":"Eigner, C., Santandrea, M., Padberg, L., Volk, M. F., Rüter, C. E., Herrmann, H., Kip, D., &#38; Silberhorn, C. (2018). Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime. <i>Optics Express</i>, Article 28827. <a href=\"https://doi.org/10.1364/oe.26.028827\">https://doi.org/10.1364/oe.26.028827</a>","mla":"Eigner, Christof, et al. “Periodically Poled Ridge Waveguides in KTP for Second Harmonic Generation in the UV Regime.” <i>Optics Express</i>, 28827, 2018, doi:<a href=\"https://doi.org/10.1364/oe.26.028827\">10.1364/oe.26.028827</a>.","bibtex":"@article{Eigner_Santandrea_Padberg_Volk_Rüter_Herrmann_Kip_Silberhorn_2018, title={Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime}, DOI={<a href=\"https://doi.org/10.1364/oe.26.028827\">10.1364/oe.26.028827</a>}, number={28827}, journal={Optics Express}, author={Eigner, Christof and Santandrea, Matteo and Padberg, Laura and Volk, Martin F. and Rüter, Christian E. and Herrmann, Harald and Kip, Detlef and Silberhorn, Christine}, year={2018} }","short":"C. Eigner, M. Santandrea, L. Padberg, M.F. Volk, C.E. Rüter, H. Herrmann, D. Kip, C. Silberhorn, Optics Express (2018).","ieee":"C. Eigner <i>et al.</i>, “Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime,” <i>Optics Express</i>, Art. no. 28827, 2018, doi: <a href=\"https://doi.org/10.1364/oe.26.028827\">10.1364/oe.26.028827</a>.","chicago":"Eigner, Christof, Matteo Santandrea, Laura Padberg, Martin F. Volk, Christian E. Rüter, Harald Herrmann, Detlef Kip, and Christine Silberhorn. “Periodically Poled Ridge Waveguides in KTP for Second Harmonic Generation in the UV Regime.” <i>Optics Express</i>, 2018. <a href=\"https://doi.org/10.1364/oe.26.028827\">https://doi.org/10.1364/oe.26.028827</a>.","ama":"Eigner C, Santandrea M, Padberg L, et al. Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime. <i>Optics Express</i>. Published online 2018. doi:<a href=\"https://doi.org/10.1364/oe.26.028827\">10.1364/oe.26.028827</a>"}},{"user_id":"13244","_id":"9619","language":[{"iso":"eng"}],"article_number":"2764","publication":"Optics Express","type":"journal_article","status":"public","author":[{"full_name":"Ansari, V.","last_name":"Ansari","first_name":"V."},{"first_name":"E.","full_name":"Roccia, E.","last_name":"Roccia"},{"first_name":"Matteo","last_name":"Santandrea","orcid":"0000-0001-5718-358X","full_name":"Santandrea, Matteo","id":"55095"},{"last_name":"Doostdar","full_name":"Doostdar, M.","first_name":"M."},{"first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","last_name":"Eigner","id":"13244","full_name":"Eigner, Christof"},{"first_name":"Laura","id":"40300","full_name":"Padberg, Laura","last_name":"Padberg"},{"first_name":"I.","full_name":"Gianani, I.","last_name":"Gianani"},{"full_name":"Sbroscia, M.","last_name":"Sbroscia","first_name":"M."},{"first_name":"J. M.","last_name":"Donohue","full_name":"Donohue, J. M."},{"first_name":"L.","last_name":"Mancino","full_name":"Mancino, L."},{"full_name":"Barbieri, M.","last_name":"Barbieri","first_name":"M."},{"last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263","first_name":"Christine"}],"date_created":"2019-05-06T10:53:11Z","date_updated":"2022-01-06T07:04:17Z","doi":"10.1364/oe.26.002764","title":"Heralded generation of high-purity ultrashort single photons in programmable temporal shapes","publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","citation":{"bibtex":"@article{Ansari_Roccia_Santandrea_Doostdar_Eigner_Padberg_Gianani_Sbroscia_Donohue_Mancino_et al._2018, title={Heralded generation of high-purity ultrashort single photons in programmable temporal shapes}, DOI={<a href=\"https://doi.org/10.1364/oe.26.002764\">10.1364/oe.26.002764</a>}, number={2764}, journal={Optics Express}, author={Ansari, V. and Roccia, E. and Santandrea, Matteo and Doostdar, M. and Eigner, Christof and Padberg, Laura and Gianani, I. and Sbroscia, M. and Donohue, J. M. and Mancino, L. and et al.}, year={2018} }","mla":"Ansari, V., et al. “Heralded Generation of High-Purity Ultrashort Single Photons in Programmable Temporal Shapes.” <i>Optics Express</i>, 2764, 2018, doi:<a href=\"https://doi.org/10.1364/oe.26.002764\">10.1364/oe.26.002764</a>.","short":"V. Ansari, E. Roccia, M. Santandrea, M. Doostdar, C. Eigner, L. Padberg, I. Gianani, M. Sbroscia, J.M. Donohue, L. Mancino, M. Barbieri, C. Silberhorn, Optics Express (2018).","apa":"Ansari, V., Roccia, E., Santandrea, M., Doostdar, M., Eigner, C., Padberg, L., Gianani, I., Sbroscia, M., Donohue, J. M., Mancino, L., Barbieri, M., &#38; Silberhorn, C. (2018). Heralded generation of high-purity ultrashort single photons in programmable temporal shapes. <i>Optics Express</i>, Article 2764. <a href=\"https://doi.org/10.1364/oe.26.002764\">https://doi.org/10.1364/oe.26.002764</a>","ieee":"V. Ansari <i>et al.</i>, “Heralded generation of high-purity ultrashort single photons in programmable temporal shapes,” <i>Optics Express</i>, Art. no. 2764, 2018, doi: <a href=\"https://doi.org/10.1364/oe.26.002764\">10.1364/oe.26.002764</a>.","chicago":"Ansari, V., E. Roccia, Matteo Santandrea, M. Doostdar, Christof Eigner, Laura Padberg, I. Gianani, et al. “Heralded Generation of High-Purity Ultrashort Single Photons in Programmable Temporal Shapes.” <i>Optics Express</i>, 2018. <a href=\"https://doi.org/10.1364/oe.26.002764\">https://doi.org/10.1364/oe.26.002764</a>.","ama":"Ansari V, Roccia E, Santandrea M, et al. Heralded generation of high-purity ultrashort single photons in programmable temporal shapes. <i>Optics Express</i>. Published online 2018. doi:<a href=\"https://doi.org/10.1364/oe.26.002764\">10.1364/oe.26.002764</a>"},"year":"2018"}]