[{"abstract":[{"text":"<jats:p>We apply principal component analysis (PCA) to a set of electrical output signals from a commercially available superconducting nanowire single-photon detector (SNSPD) to investigate their photon-number-resolving capability. We find that the rising edge as well as the amplitude of the electrical signal have the most dependence on photon number. Accurately measuring the rising edge while simultaneously measuring the voltage of the pulse amplitude maximizes the photon-number resolution of SNSPDs. Using an optimal basis of principal components, we show unambiguous discrimination between one- and two-photon events, as well as partial resolution up to five photons. This expands the use case of SNSPDs to photon-counting experiments, without the need of detector multiplexing architectures.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>","lang":"eng"}],"publication":"Physical Review Applied","language":[{"iso":"eng"}],"year":"2024","issue":"1","title":"Electrical trace analysis of superconducting nanowire photon-number-resolving detectors","date_created":"2024-07-11T07:23:08Z","publisher":"American Physical Society (APS)","status":"public","type":"journal_article","article_number":"014024","department":[{"_id":"15"},{"_id":"623"}],"user_id":"55629","_id":"55174","project":[{"call_identifier":"ERC","grant_number":"101042399","_id":"239","name":"QuESADILLA: ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications"},{"grant_number":"13N16103","name":"PhoQuant--QCTest: PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191"}],"intvolume":"        22","citation":{"chicago":"Schapeler, Timon, Niklas Lamberty, Thomas Hummel, Fabian Schlue, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Tim Bartley. “Electrical Trace Analysis of Superconducting Nanowire Photon-Number-Resolving Detectors.” <i>Physical Review Applied</i> 22, no. 1 (2024). <a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">https://doi.org/10.1103/physrevapplied.22.014024</a>.","ieee":"T. Schapeler <i>et al.</i>, “Electrical trace analysis of superconducting nanowire photon-number-resolving detectors,” <i>Physical Review Applied</i>, vol. 22, no. 1, Art. no. 014024, 2024, doi: <a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>.","ama":"Schapeler T, Lamberty N, Hummel T, et al. Electrical trace analysis of superconducting nanowire photon-number-resolving detectors. <i>Physical Review Applied</i>. 2024;22(1). doi:<a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>","bibtex":"@article{Schapeler_Lamberty_Hummel_Schlue_Stefszky_Brecht_Silberhorn_Bartley_2024, title={Electrical trace analysis of superconducting nanowire photon-number-resolving detectors}, volume={22}, DOI={<a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>}, number={1014024}, journal={Physical Review Applied}, publisher={American Physical Society (APS)}, author={Schapeler, Timon and Lamberty, Niklas and Hummel, Thomas and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}, year={2024} }","short":"T. Schapeler, N. Lamberty, T. Hummel, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, Physical Review Applied 22 (2024).","mla":"Schapeler, Timon, et al. “Electrical Trace Analysis of Superconducting Nanowire Photon-Number-Resolving Detectors.” <i>Physical Review Applied</i>, vol. 22, no. 1, 014024, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">10.1103/physrevapplied.22.014024</a>.","apa":"Schapeler, T., Lamberty, N., Hummel, T., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Bartley, T. (2024). Electrical trace analysis of superconducting nanowire photon-number-resolving detectors. <i>Physical Review Applied</i>, <i>22</i>(1), Article 014024. <a href=\"https://doi.org/10.1103/physrevapplied.22.014024\">https://doi.org/10.1103/physrevapplied.22.014024</a>"},"publication_identifier":{"issn":["2331-7019"]},"publication_status":"published","doi":"10.1103/physrevapplied.22.014024","main_file_link":[{"open_access":"1"}],"volume":22,"author":[{"id":"55629","full_name":"Schapeler, Timon","last_name":"Schapeler","orcid":"0000-0001-7652-1716","first_name":"Timon"},{"full_name":"Lamberty, Niklas","last_name":"Lamberty","first_name":"Niklas"},{"first_name":"Thomas","orcid":"0000-0001-8627-2119","last_name":"Hummel","id":"83846","full_name":"Hummel, Thomas"},{"last_name":"Schlue","id":"63579","full_name":"Schlue, Fabian","first_name":"Fabian"},{"id":"42777","full_name":"Stefszky, Michael","last_name":"Stefszky","first_name":"Michael"},{"first_name":"Benjamin","id":"27150","full_name":"Brecht, Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 "},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"},{"id":"49683","full_name":"Bartley, Tim","last_name":"Bartley","first_name":"Tim"}],"oa":"1","date_updated":"2024-07-11T09:36:00Z"},{"title":"Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides","publisher":"Optica Publishing Group","date_created":"2024-06-10T11:18:06Z","year":"2024","issue":"13","keyword":["tet_topic_waveguide"],"ddc":["530"],"language":[{"iso":"eng"}],"abstract":[{"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.","lang":"eng"}],"file":[{"date_updated":"2024-06-10T11:25:00Z","date_created":"2024-06-10T11:25:00Z","creator":"fossie","file_size":4004782,"file_id":"54669","access_level":"open_access","file_name":"2024-06 Hammer - Optics Express - Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides.pdf","content_type":"application/pdf","relation":"main_file"}],"publication":"Optics Express","doi":"10.1364/oe.521766","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"},{"id":"63231","full_name":"Babel, Silia","orcid":"https://orcid.org/0000-0002-1568-2580","last_name":"Babel","first_name":"Silia"},{"first_name":"Henna","full_name":"Farheen, Henna","id":"53444","last_name":"Farheen","orcid":"0000-0001-7730-3489"},{"last_name":"Padberg","full_name":"Padberg, Laura","id":"40300","first_name":"Laura"},{"first_name":"J. Christoph","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","full_name":"Scheytt, J. Christoph","id":"37144"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"},{"orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens","first_name":"Jens"}],"intvolume":"        32","page":"22878","citation":{"short":"M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner, Optics Express 32 (2024) 22878.","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} }","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>","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>","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>."},"publication_identifier":{"issn":["1094-4087"]},"has_accepted_license":"1","publication_status":"published","file_date_updated":"2024-06-10T11:25:00Z","_id":"54668","project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53","grant_number":"231447078"},{"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","_id":"167","name":"TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle eines photonischen Quantensystems (B06*)"},{"grant_number":"PROFILNRW-2020-067","name":"PhoQC: PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"61"},{"_id":"429"},{"_id":"623"},{"_id":"263"},{"_id":"288"}],"user_id":"158","status":"public","type":"journal_article"},{"citation":{"apa":"Barkhofen, S., De, S., Sperling, J., Silberhorn, C., Altland, A., Bagrets, D., Kim, K. W., &#38; Micklitz, T. (2024). Experimental observation of topological quantum criticality. <i>Physical Review Research</i>, <i>6</i>(3), Article 033194. <a href=\"https://doi.org/10.1103/physrevresearch.6.033194\">https://doi.org/10.1103/physrevresearch.6.033194</a>","bibtex":"@article{Barkhofen_De_Sperling_Silberhorn_Altland_Bagrets_Kim_Micklitz_2024, title={Experimental observation of topological quantum criticality}, volume={6}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.6.033194\">10.1103/physrevresearch.6.033194</a>}, number={3033194}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Barkhofen, Sonja and De, Syamsundar and Sperling, Jan and Silberhorn, Christine and Altland, Alexander and Bagrets, Dmitry and Kim, Kun Woo and Micklitz, Tobias}, year={2024} }","short":"S. Barkhofen, S. De, J. Sperling, C. Silberhorn, A. Altland, D. Bagrets, K.W. Kim, T. Micklitz, Physical Review Research 6 (2024).","mla":"Barkhofen, Sonja, et al. “Experimental Observation of Topological Quantum Criticality.” <i>Physical Review Research</i>, vol. 6, no. 3, 033194, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.033194\">10.1103/physrevresearch.6.033194</a>.","ama":"Barkhofen S, De S, Sperling J, et al. Experimental observation of topological quantum criticality. <i>Physical Review Research</i>. 2024;6(3). doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.033194\">10.1103/physrevresearch.6.033194</a>","ieee":"S. Barkhofen <i>et al.</i>, “Experimental observation of topological quantum criticality,” <i>Physical Review Research</i>, vol. 6, no. 3, Art. no. 033194, 2024, doi: <a href=\"https://doi.org/10.1103/physrevresearch.6.033194\">10.1103/physrevresearch.6.033194</a>.","chicago":"Barkhofen, Sonja, Syamsundar De, Jan Sperling, Christine Silberhorn, Alexander Altland, Dmitry Bagrets, Kun Woo Kim, and Tobias Micklitz. “Experimental Observation of Topological Quantum Criticality.” <i>Physical Review Research</i> 6, no. 3 (2024). <a href=\"https://doi.org/10.1103/physrevresearch.6.033194\">https://doi.org/10.1103/physrevresearch.6.033194</a>."},"intvolume":"         6","year":"2024","issue":"3","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"doi":"10.1103/physrevresearch.6.033194","title":"Experimental observation of topological quantum criticality","author":[{"last_name":"Barkhofen","id":"48188","full_name":"Barkhofen, Sonja","first_name":"Sonja"},{"first_name":"Syamsundar","last_name":"De","full_name":"De, Syamsundar"},{"id":"75127","full_name":"Sperling, Jan","last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"},{"first_name":"Alexander","full_name":"Altland, Alexander","last_name":"Altland"},{"first_name":"Dmitry","last_name":"Bagrets","full_name":"Bagrets, Dmitry"},{"first_name":"Kun Woo","full_name":"Kim, Kun Woo","last_name":"Kim"},{"full_name":"Micklitz, Tobias","last_name":"Micklitz","first_name":"Tobias"}],"date_created":"2024-08-22T10:47:06Z","volume":6,"date_updated":"2024-08-22T10:47:57Z","publisher":"American Physical Society (APS)","status":"public","abstract":[{"text":"<jats:p>We report on a photonic simulator of the critical state forming at the quantum phase transition between topologically distinct Anderson insulator phases. We observe a time-staggered profile in the circular photon polarization, which originates from the interplay of a chiral and sublattice symmetry, and has recently been suggested as a signature for topological Anderson criticality within the setup. We discuss the role of statistical detuning from criticality and show that the controlled breaking of phase coherence removes the signal, revealing its origin in quantum coherence.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>","lang":"eng"}],"type":"journal_article","publication":"Physical Review Research","language":[{"iso":"eng"}],"article_number":"033194","user_id":"48188","department":[{"_id":"623"}],"_id":"55737"},{"type":"conference","publication":"Ultrafast Phenomena and Nanophotonics XXVIII","editor":[{"last_name":"Betz","full_name":"Betz, Markus","first_name":"Markus"},{"first_name":"Abdulhakem Y.","full_name":"Elezzabi, Abdulhakem Y.","last_name":"Elezzabi"}],"status":"public","project":[{"grant_number":"231447078","_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"grant_number":"231447078","name":"TRR 142 - A02: TRR 142 - Nichtlineare Spektroskopie von Halbleiter-Nanostrukturen mit Quantenlicht (A02)","_id":"59"}],"_id":"55268","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"language":[{"iso":"eng"}],"publication_status":"published","year":"2024","citation":{"ama":"Rose H, Sharapova PR, Meier T. Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light. In: Betz M, Elezzabi AY, eds. <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>. SPIE; 2024. doi:<a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>","chicago":"Rose, Hendrik, Polina R. Sharapova, and Torsten Meier. “Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light.” In <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>, edited by Markus Betz and Abdulhakem Y. Elezzabi. SPIE, 2024. <a href=\"https://doi.org/10.1117/12.2690245\">https://doi.org/10.1117/12.2690245</a>.","ieee":"H. Rose, P. R. Sharapova, and T. Meier, “Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light,” in <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>, 2024, doi: <a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>.","apa":"Rose, H., Sharapova, P. R., &#38; Meier, T. (2024). Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light. In M. Betz &#38; A. Y. Elezzabi (Eds.), <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>. SPIE. <a href=\"https://doi.org/10.1117/12.2690245\">https://doi.org/10.1117/12.2690245</a>","mla":"Rose, Hendrik, et al. “Microscopic Simulations of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light.” <i>Ultrafast Phenomena and Nanophotonics XXVIII</i>, edited by Markus Betz and Abdulhakem Y. Elezzabi, SPIE, 2024, doi:<a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>.","short":"H. Rose, P.R. Sharapova, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXVIII, SPIE, 2024.","bibtex":"@inproceedings{Rose_Sharapova_Meier_2024, title={Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light}, DOI={<a href=\"https://doi.org/10.1117/12.2690245\">10.1117/12.2690245</a>}, booktitle={Ultrafast Phenomena and Nanophotonics XXVIII}, publisher={SPIE}, author={Rose, Hendrik and Sharapova, Polina R. and Meier, Torsten}, editor={Betz, Markus and Elezzabi, Abdulhakem Y.}, year={2024} }"},"date_updated":"2024-08-30T11:59:34Z","publisher":"SPIE","author":[{"full_name":"Rose, Hendrik","id":"55958","orcid":"0000-0002-3079-5428","last_name":"Rose","first_name":"Hendrik"},{"last_name":"Sharapova","full_name":"Sharapova, Polina R.","id":"60286","first_name":"Polina R."},{"orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344","full_name":"Meier, Torsten","first_name":"Torsten"}],"date_created":"2024-07-15T10:26:04Z","title":"Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light","doi":"10.1117/12.2690245"},{"year":"2024","issue":"1","quality_controlled":"1","title":"Comparing transmission- and epi-BCARS: a round robin on solid-state materials","date_created":"2023-12-15T07:32:38Z","publisher":"Optica Publishing Group","abstract":[{"text":"Broadband coherent anti-Stokes Raman scattering (BCARS) is a powerful spectroscopy method combining high signal intensity with spectral sensitivity, enabling rapid imaging of heterogeneous samples in biomedical research and, more recently, in crystalline materials. However, BCARS encounters spectral distortion due to a setup-dependent non-resonant background (NRB). This study assesses BCARS reproducibility through a round robin experiment using two distinct BCARS setups and crystalline materials with varying structural complexity, including diamond, 6H-SiC, KDP, and KTP. The analysis compares setup-specific NRB correction procedures, detected and NRB-removed spectra, and mode assignment. We determine the influence of BCARS setup parameters like pump wavelength, pulse width, and detection geometry and provide a practical guide for optimizing BCARS setups for solid-state applications.","lang":"eng"}],"publication":"Applied Optics","language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics","Engineering (miscellaneous)","Electrical and Electronic Engineering"],"intvolume":"        63","citation":{"apa":"Hempel, F., Vernuccio, F., König, L., Buschbeck, R., Rüsing, M., Cerullo, G., Polli, D., &#38; Eng, L. M. (2024). Comparing transmission- and epi-BCARS: a round robin on solid-state materials. <i>Applied Optics</i>, <i>63</i>(1), Article 112. <a href=\"https://doi.org/10.1364/ao.505374\">https://doi.org/10.1364/ao.505374</a>","bibtex":"@article{Hempel_Vernuccio_König_Buschbeck_Rüsing_Cerullo_Polli_Eng_2024, title={Comparing transmission- and epi-BCARS: a round robin on solid-state materials}, volume={63}, DOI={<a href=\"https://doi.org/10.1364/ao.505374\">10.1364/ao.505374</a>}, number={1112}, journal={Applied Optics}, publisher={Optica Publishing Group}, author={Hempel, Franz and Vernuccio, Federico and König, Lukas and Buschbeck, Robin and Rüsing, Michael and Cerullo, Giulio and Polli, Dario and Eng, Lukas M.}, year={2024} }","mla":"Hempel, Franz, et al. “Comparing Transmission- and Epi-BCARS: A Round Robin on Solid-State Materials.” <i>Applied Optics</i>, vol. 63, no. 1, 112, Optica Publishing Group, 2024, doi:<a href=\"https://doi.org/10.1364/ao.505374\">10.1364/ao.505374</a>.","short":"F. Hempel, F. Vernuccio, L. König, R. Buschbeck, M. Rüsing, G. Cerullo, D. Polli, L.M. Eng, Applied Optics 63 (2024).","chicago":"Hempel, Franz, Federico Vernuccio, Lukas König, Robin Buschbeck, Michael Rüsing, Giulio Cerullo, Dario Polli, and Lukas M. Eng. “Comparing Transmission- and Epi-BCARS: A Round Robin on Solid-State Materials.” <i>Applied Optics</i> 63, no. 1 (2024). <a href=\"https://doi.org/10.1364/ao.505374\">https://doi.org/10.1364/ao.505374</a>.","ieee":"F. Hempel <i>et al.</i>, “Comparing transmission- and epi-BCARS: a round robin on solid-state materials,” <i>Applied Optics</i>, vol. 63, no. 1, Art. no. 112, 2024, doi: <a href=\"https://doi.org/10.1364/ao.505374\">10.1364/ao.505374</a>.","ama":"Hempel F, Vernuccio F, König L, et al. Comparing transmission- and epi-BCARS: a round robin on solid-state materials. <i>Applied Optics</i>. 2024;63(1). doi:<a href=\"https://doi.org/10.1364/ao.505374\">10.1364/ao.505374</a>"},"related_material":{"link":[{"relation":"confirmation","url":"https://arxiv.org/abs/2306.09701"}]},"publication_identifier":{"issn":["1559-128X","2155-3165"]},"publication_status":"published","doi":"10.1364/ao.505374","main_file_link":[{"url":"https://arxiv.org/pdf/2306.09701.pdf","open_access":"1"}],"volume":63,"author":[{"last_name":"Hempel","full_name":"Hempel, Franz","first_name":"Franz"},{"last_name":"Vernuccio","full_name":"Vernuccio, Federico","first_name":"Federico"},{"full_name":"König, Lukas","last_name":"König","first_name":"Lukas"},{"full_name":"Buschbeck, Robin","last_name":"Buschbeck","first_name":"Robin"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"last_name":"Cerullo","full_name":"Cerullo, Giulio","first_name":"Giulio"},{"last_name":"Polli","full_name":"Polli, Dario","first_name":"Dario"},{"first_name":"Lukas M.","full_name":"Eng, Lukas M.","last_name":"Eng"}],"oa":"1","date_updated":"2025-04-03T12:36:01Z","status":"public","type":"journal_article","article_type":"original","article_number":"112","department":[{"_id":"15"},{"_id":"288"},{"_id":"623"}],"user_id":"22501","_id":"49652"},{"project":[{"_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","grant_number":"231447078"},{"_id":"54","name":"TRR 142 - A: TRR 142 - Project Area A"},{"name":"TRR 142 - A09: TRR 142 - Erzeugung von Drei-Photonen-Zuständen mit On-Chip Pumplichtunterdrückung in topologischen Wellenleitern (A09*)","_id":"164","grant_number":"231447078"}],"_id":"60023","user_id":"30525","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"language":[{"iso":"eng"}],"type":"conference","publication":"Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics","status":"public","date_updated":"2025-05-23T06:34:16Z","date_created":"2025-05-23T06:30:36Z","author":[{"first_name":"Helene","full_name":"Wetter, Helene","last_name":"Wetter"},{"first_name":"Wenlong","full_name":"Gao, Wenlong","last_name":"Gao"},{"first_name":"Falk","last_name":"Rehberg","full_name":"Rehberg, Falk"},{"id":"69187","full_name":"Wingenbach, Jan","last_name":"Wingenbach","first_name":"Jan"},{"first_name":"Stefan","full_name":"Schumacher, Stefan","id":"27271","orcid":"0000-0003-4042-4951","last_name":"Schumacher"},{"first_name":"Thomas","full_name":"Zentgraf, Thomas","id":"30525","orcid":"0000-0002-8662-1101","last_name":"Zentgraf"}],"title":"Dielectric metasurface for wave-vector variant and circular polarization dependent transmission","conference":{"start_date":"2024-07-16","name":"META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics","location":"Toyama, Japan","end_date":"2024-07-19"},"publication_identifier":{"issn":["2429-1390"]},"year":"2024","citation":{"chicago":"Wetter, Helene, Wenlong Gao, Falk Rehberg, Jan Wingenbach, Stefan Schumacher, and Thomas Zentgraf. “Dielectric Metasurface for Wave-Vector Variant and Circular Polarization Dependent Transmission.” In <i>Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>, 2024.","ieee":"H. Wetter, W. Gao, F. Rehberg, J. Wingenbach, S. Schumacher, and T. Zentgraf, “Dielectric metasurface for wave-vector variant and circular polarization dependent transmission,” presented at the META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan, 2024.","ama":"Wetter H, Gao W, Rehberg F, Wingenbach J, Schumacher S, Zentgraf T. Dielectric metasurface for wave-vector variant and circular polarization dependent transmission. In: <i>Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>. ; 2024.","mla":"Wetter, Helene, et al. “Dielectric Metasurface for Wave-Vector Variant and Circular Polarization Dependent Transmission.” <i>Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>, 2024.","short":"H. Wetter, W. Gao, F. Rehberg, J. Wingenbach, S. Schumacher, T. Zentgraf, in: Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, 2024.","bibtex":"@inproceedings{Wetter_Gao_Rehberg_Wingenbach_Schumacher_Zentgraf_2024, title={Dielectric metasurface for wave-vector variant and circular polarization dependent transmission}, booktitle={Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics}, author={Wetter, Helene and Gao, Wenlong and Rehberg, Falk and Wingenbach, Jan and Schumacher, Stefan and Zentgraf, Thomas}, year={2024} }","apa":"Wetter, H., Gao, W., Rehberg, F., Wingenbach, J., Schumacher, S., &#38; Zentgraf, T. (2024). Dielectric metasurface for wave-vector variant and circular polarization dependent transmission. <i>Proceedings of The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics</i>. META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan."}},{"publication":"J. Europ. Math. Soc.","file":[{"date_updated":"2022-06-22T09:56:47Z","creator":"weich","date_created":"2022-06-22T09:56:47Z","file_size":796410,"file_id":"32102","file_name":"2007.14275.pdf","access_level":"open_access","content_type":"application/pdf","relation":"main_file"}],"ddc":["510"],"language":[{"iso":"eng"}],"issue":"8","year":"2024","date_created":"2022-06-22T09:56:51Z","title":"Ruelle-Taylor resonances of Anosov actions","type":"journal_article","status":"public","_id":"32101","user_id":"49178","department":[{"_id":"10"},{"_id":"623"},{"_id":"548"},{"_id":"91"}],"file_date_updated":"2022-06-22T09:56:47Z","publication_status":"published","has_accepted_license":"1","citation":{"chicago":"Weich, Tobias, Yannick Guedes Bonthonneau, Colin Guillarmou, and Joachim Hilgert. “Ruelle-Taylor Resonances of Anosov Actions.” <i>J. Europ. Math. Soc.</i> 27, no. 8 (2024): 3085–3147. <a href=\"https://doi.org/10.4171/JEMS/1428\">https://doi.org/10.4171/JEMS/1428</a>.","ieee":"T. Weich, Y. Guedes Bonthonneau, C. Guillarmou, and J. Hilgert, “Ruelle-Taylor resonances of Anosov actions,” <i>J. Europ. Math. Soc.</i>, vol. 27, no. 8, pp. 3085–3147, 2024, doi: <a href=\"https://doi.org/10.4171/JEMS/1428\">https://doi.org/10.4171/JEMS/1428</a>.","ama":"Weich T, Guedes Bonthonneau Y, Guillarmou C, Hilgert J. Ruelle-Taylor resonances of Anosov actions. <i>J Europ Math Soc</i>. 2024;27(8):3085–3147. doi:<a href=\"https://doi.org/10.4171/JEMS/1428\">https://doi.org/10.4171/JEMS/1428</a>","apa":"Weich, T., Guedes Bonthonneau, Y., Guillarmou, C., &#38; Hilgert, J. (2024). Ruelle-Taylor resonances of Anosov actions. <i>J. Europ. Math. Soc.</i>, <i>27</i>(8), 3085–3147. <a href=\"https://doi.org/10.4171/JEMS/1428\">https://doi.org/10.4171/JEMS/1428</a>","bibtex":"@article{Weich_Guedes Bonthonneau_Guillarmou_Hilgert_2024, title={Ruelle-Taylor resonances of Anosov actions}, volume={27}, DOI={<a href=\"https://doi.org/10.4171/JEMS/1428\">https://doi.org/10.4171/JEMS/1428</a>}, number={8}, journal={J. Europ. Math. Soc.}, author={Weich, Tobias and Guedes Bonthonneau, Yannick and Guillarmou, Colin and Hilgert, Joachim}, year={2024}, pages={3085–3147} }","short":"T. Weich, Y. Guedes Bonthonneau, C. Guillarmou, J. Hilgert, J. Europ. Math. Soc. 27 (2024) 3085–3147.","mla":"Weich, Tobias, et al. “Ruelle-Taylor Resonances of Anosov Actions.” <i>J. Europ. Math. Soc.</i>, vol. 27, no. 8, 2024, pp. 3085–3147, doi:<a href=\"https://doi.org/10.4171/JEMS/1428\">https://doi.org/10.4171/JEMS/1428</a>."},"page":"3085–3147","intvolume":"        27","date_updated":"2026-02-18T10:33:34Z","oa":"1","author":[{"orcid":"0000-0002-9648-6919","last_name":"Weich","full_name":"Weich, Tobias","id":"49178","first_name":"Tobias"},{"first_name":"Yannick","full_name":"Guedes Bonthonneau, Yannick","last_name":"Guedes Bonthonneau"},{"first_name":"Colin","full_name":"Guillarmou, Colin","last_name":"Guillarmou"},{"first_name":"Joachim","id":"220","full_name":"Hilgert, Joachim","last_name":"Hilgert"}],"volume":27,"doi":"https://doi.org/10.4171/JEMS/1428"},{"abstract":[{"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>","lang":"eng"}],"status":"public","type":"journal_article","publication":"Applied Physics Letters","language":[{"iso":"eng"}],"project":[{"_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","grant_number":"231447078"}],"_id":"57028","user_id":"61375","department":[{"_id":"15"},{"_id":"623"},{"_id":"230"},{"_id":"288"}],"year":"2024","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>","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>.","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} }","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>","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>.","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>."},"intvolume":"       125","publication_status":"published","publication_identifier":{"issn":["0003-6951","1077-3118"]},"issue":"15","title":"Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate mixed crystals","doi":"10.1063/5.0210972","publisher":"AIP Publishing","date_updated":"2024-11-15T09:15:08Z","date_created":"2024-11-13T08:06:59Z","author":[{"first_name":"Laura","full_name":"Bollmers, Laura","id":"61375","last_name":"Bollmers"},{"first_name":"Tobias","full_name":"Babai-Hemati, Tobias","last_name":"Babai-Hemati"},{"first_name":"Boris","last_name":"Koppitz","full_name":"Koppitz, Boris"},{"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":"Michael","full_name":"Rüsing, Michael","id":"22501","orcid":"0000-0003-4682-4577","last_name":"Rüsing"},{"full_name":"Eng, Lukas M.","last_name":"Eng","first_name":"Lukas M."},{"first_name":"Christine","last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine"}],"volume":125},{"year":"2024","citation":{"ama":"Kress C, Schwabe T, Mihaylov MM, Silberhorn C, Scheytt JC. Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology. In: ; 2024.","chicago":"Kress, Christian, Tobias Schwabe, Martin Miroslavov Mihaylov, Christine Silberhorn, and J. Christoph Scheytt. “Integrated Pulse Generator for Photon Pair Generation Using Lithium Niobate on Insulator Technology,” 2024.","ieee":"C. Kress, T. Schwabe, M. M. Mihaylov, C. Silberhorn, and J. C. Scheytt, “Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology,” presented at the Quantum Photonics Spotlight, Paderborn, 2024.","mla":"Kress, Christian, et al. <i>Integrated Pulse Generator for Photon Pair Generation Using Lithium Niobate on Insulator Technology</i>. 2024.","bibtex":"@inproceedings{Kress_Schwabe_Mihaylov_Silberhorn_Scheytt_2024, title={Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology}, author={Kress, Christian and Schwabe, Tobias and Mihaylov, Martin Miroslavov and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }","short":"C. Kress, T. Schwabe, M.M. Mihaylov, C. Silberhorn, J.C. Scheytt, in: 2024.","apa":"Kress, C., Schwabe, T., Mihaylov, M. M., Silberhorn, C., &#38; Scheytt, J. C. (2024). <i>Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology</i>. Quantum Photonics Spotlight, Paderborn."},"title":"Integrated Pulse Generator for Photon Pair Generation using Lithium Niobate on Insulator Technology","conference":{"end_date":"2024-10-10","location":"Paderborn","name":"Quantum Photonics Spotlight","start_date":"2024-10-08"},"date_updated":"2024-11-15T10:21:02Z","date_created":"2024-11-15T10:20:33Z","author":[{"first_name":"Christian","full_name":"Kress, Christian","id":"13256","last_name":"Kress"},{"last_name":"Schwabe","id":"39217","full_name":"Schwabe, Tobias","first_name":"Tobias"},{"first_name":"Martin Miroslavov","full_name":"Mihaylov, Martin Miroslavov","id":"42449","last_name":"Mihaylov"},{"first_name":"Christine","id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn"},{"first_name":"J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","full_name":"Scheytt, J. Christoph","id":"37144"}],"status":"public","type":"conference_abstract","language":[{"iso":"eng"}],"_id":"57107","project":[{"grant_number":"231447078","name":"TRR 142 - C11: TRR 142 - Kompakte Photonenpaar-Quelle mit ultraschnellen Modulatoren auf Basis von CMOS und LNOI (C11*)","_id":"175"}],"department":[{"_id":"58"},{"_id":"623"}],"user_id":"13256"},{"author":[{"first_name":"Martin Miroslavov","last_name":"Mihaylov","id":"42449","full_name":"Mihaylov, Martin Miroslavov"},{"first_name":"Christian","full_name":"Kress, Christian","id":"13256","last_name":"Kress"},{"full_name":"Scheytt, J. Christoph","id":"37144","last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","first_name":"J. Christoph"}],"date_created":"2024-11-15T13:47:10Z","date_updated":"2024-11-15T14:01:51Z","conference":{"location":"Paderborn","end_date":"2024,10,10","start_date":"2024,10,08","name":"Quantum Photonics Spotlight "},"title":"Simulation and Optimization of Low-Loss Photonic Coupling  Structures for TFLN Integrated Circuits for Quantum Applications","citation":{"short":"M.M. Mihaylov, C. Kress, J.C. Scheytt, in: 2024.","bibtex":"@inproceedings{Mihaylov_Kress_Scheytt_2024, title={Simulation and Optimization of Low-Loss Photonic Coupling  Structures for TFLN Integrated Circuits for Quantum Applications}, author={Mihaylov, Martin Miroslavov and Kress, Christian and Scheytt, J. Christoph}, year={2024} }","mla":"Mihaylov, Martin Miroslavov, et al. <i>Simulation and Optimization of Low-Loss Photonic Coupling  Structures for TFLN Integrated Circuits for Quantum Applications</i>. 2024.","apa":"Mihaylov, M. M., Kress, C., &#38; Scheytt, J. C. 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Christoph Scheytt. “Simulation and Optimization of Low-Loss Photonic Coupling  Structures for TFLN Integrated Circuits for Quantum Applications,” 2024."},"year":"2024","department":[{"_id":"58"},{"_id":"623"}],"user_id":"42449","_id":"57111","language":[{"iso":"eng"}],"type":"conference_abstract","status":"public"},{"ipc":"G01S 7/481","date_updated":"2024-11-15T13:58:41Z","date_created":"2024-11-14T16:11:10Z","author":[{"first_name":"Stephan","last_name":"Kruse","full_name":"Kruse, Stephan","id":"38254"},{"first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","full_name":"Brecht, Benjamin","id":"27150"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"Laura Maria","id":"88242","full_name":"Serino, Laura Maria","last_name":"Serino"}],"title":"Quantenoptisch-unterstütztes Sende-/Empfangssystem","ipn":"10 2023 203 697.5","year":"2024","citation":{"bibtex":"@article{Kruse_Brecht_Silberhorn_Serino_2024, title={Quantenoptisch-unterstütztes Sende-/Empfangssystem}, author={Kruse, Stephan and Brecht, Benjamin and Silberhorn, Christine and Serino, Laura Maria}, year={2024} }","short":"S. 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Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy. <i>Journal of Applied Physics</i>. 2024;136(15). doi:<a href=\"https://doi.org/10.1063/5.0237769\">10.1063/5.0237769</a>","ieee":"B. Kirbus, S. D. Seddon, I. Kiseleva, E. Beyreuther, M. Rüsing, and L. M. Eng, “Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy,” <i>Journal of Applied Physics</i>, vol. 136, no. 15, Art. no. 154102, 2024, doi: <a href=\"https://doi.org/10.1063/5.0237769\">10.1063/5.0237769</a>.","chicago":"Kirbus, Benjamin, Samuel D. Seddon, Iuliia Kiseleva, Elke Beyreuther, Michael Rüsing, and Lukas M. Eng. “Probing Ferroelectric Phase Transitions in Barium Titanate Single Crystals via In-Situ Second Harmonic Generation Microscopy.” <i>Journal of Applied Physics</i> 136, no. 15 (2024). <a href=\"https://doi.org/10.1063/5.0237769\">https://doi.org/10.1063/5.0237769</a>."},"intvolume":"       136","language":[{"iso":"eng"}],"publication":"Journal of Applied Physics","abstract":[{"lang":"eng","text":"Ferroelectric materials play a crucial role in a broad range of technologies due to their unique properties that are deeply connected to the pattern and behavior of their ferroelectric (FE) domains. Chief among them, barium titanate (BaTiO3; BTO) sees widespread applications such as in electronics but equally is a ferroelectric model system for fundamental research, e.g., to study the interplay of such FE domains, the domain walls (DWs), and their macroscopic properties, owed to BTO’s multiple and experimentally accessible phase transitions. Here, we employ Second Harmonic Generation Microscopy (SHGM) to in situ investigate the cubic-to-tetragonal (at ∼126°C) and the tetragonal-to-orthorhombic (at ∼5°C) phase transition in single-crystalline BTO via three-dimensional (3D) DW mapping. We demonstrate that SHGM imaging provides the direct visualization of FE domain switching as well as the domain dynamics in 3D, shedding light on the interplay of the domain structure and phase transition. These results allow us to extract the different transition temperatures locally, to unveil the hysteresis behavior, and to determine the type of phase transition at play (first/second order) from the recorded SHGM data. The capabilities of SHGM in uncovering these crucial phenomena can easily be applied to other ferroelectrics to provide new possibilities for in situ engineering of advanced ferroic devices."}],"publisher":"AIP Publishing","date_created":"2025-04-02T15:57:11Z","title":"Probing ferroelectric phase transitions in barium titanate single crystals via in-situ second harmonic generation microscopy","quality_controlled":"1","issue":"15","year":"2024"},{"date_created":"2025-04-02T16:04:58Z","publisher":"Wiley","title":"Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment","issue":"1","year":"2024","language":[{"iso":"eng"}],"publication":"physica status solidi (a)","abstract":[{"lang":"eng","text":"Lithium niobate (LNO) and lithium tantalate (LTO) see widespread use in fundamental research and commercial technologies reaching from electronics over classical optics to integrated quantum communication. The mixed crystal system lithium niobate tantalate (LNT) allows for the dedicate engineering of material properties by combining the advantages of the two parental materials LNO and LTO. Vibrational spectroscopies such as Raman spectroscopy or (Fourier transform) infrared (IR) spectroscopy are vital techniques to provide detailed insight into the material properties, which is central to the analysis and optimization of devices. This work presents a joint experimental–theoretical approach allowing to unambiguously assign the spectral features in the LNT material family through both Raman and IR spectroscopy, as well as providing an in‐depth explanation for the observed scattering efficiencies based on first‐principles calculations. The phononic contribution to the static dielectric tensor is calculated from the experimental and theoretical data using the generalized Lyddane–Sachs–Teller relation and compared with the results of the first‐principles calculations."}],"volume":222,"author":[{"first_name":"Felix","full_name":"Bernhardt, Felix","last_name":"Bernhardt"},{"first_name":"Soham","last_name":"Gharat","full_name":"Gharat, Soham"},{"full_name":"Kapp, Alexander","last_name":"Kapp","first_name":"Alexander"},{"first_name":"Florian","last_name":"Pfeiffer","full_name":"Pfeiffer, Florian"},{"full_name":"Buschbeck, Robin","last_name":"Buschbeck","first_name":"Robin"},{"first_name":"Franz","full_name":"Hempel, Franz","last_name":"Hempel"},{"first_name":"Oleksiy","last_name":"Pashkin","full_name":"Pashkin, Oleksiy"},{"last_name":"Kehr","full_name":"Kehr, Susanne C.","first_name":"Susanne C."},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing"},{"first_name":"Simone","last_name":"Sanna","full_name":"Sanna, Simone"},{"full_name":"Eng, Lukas M.","last_name":"Eng","first_name":"Lukas M."}],"oa":"1","date_updated":"2025-04-02T16:07:19Z","doi":"10.1002/pssa.202300968","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1002/pssa.202300968"}],"publication_identifier":{"issn":["1862-6300","1862-6319"]},"publication_status":"published","intvolume":"       222","page":"2300968","citation":{"chicago":"Bernhardt, Felix, Soham Gharat, Alexander Kapp, Florian Pfeiffer, Robin Buschbeck, Franz Hempel, Oleksiy Pashkin, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment.” <i>Physica Status Solidi (a)</i> 222, no. 1 (2024): 2300968. <a href=\"https://doi.org/10.1002/pssa.202300968\">https://doi.org/10.1002/pssa.202300968</a>.","ieee":"F. Bernhardt <i>et al.</i>, “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment,” <i>physica status solidi (a)</i>, vol. 222, no. 1, p. 2300968, 2024, doi: <a href=\"https://doi.org/10.1002/pssa.202300968\">10.1002/pssa.202300968</a>.","ama":"Bernhardt F, Gharat S, Kapp A, et al. Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment. <i>physica status solidi (a)</i>. 2024;222(1):2300968. doi:<a href=\"https://doi.org/10.1002/pssa.202300968\">10.1002/pssa.202300968</a>","apa":"Bernhardt, F., Gharat, S., Kapp, A., Pfeiffer, F., Buschbeck, R., Hempel, F., Pashkin, O., Kehr, S. C., Rüsing, M., Sanna, S., &#38; Eng, L. M. (2024). Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment. <i>Physica Status Solidi (a)</i>, <i>222</i>(1), 2300968. <a href=\"https://doi.org/10.1002/pssa.202300968\">https://doi.org/10.1002/pssa.202300968</a>","short":"F. Bernhardt, S. Gharat, A. Kapp, F. Pfeiffer, R. Buschbeck, F. Hempel, O. Pashkin, S.C. Kehr, M. Rüsing, S. Sanna, L.M. Eng, Physica Status Solidi (a) 222 (2024) 2300968.","mla":"Bernhardt, Felix, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment.” <i>Physica Status Solidi (a)</i>, vol. 222, no. 1, Wiley, 2024, p. 2300968, doi:<a href=\"https://doi.org/10.1002/pssa.202300968\">10.1002/pssa.202300968</a>.","bibtex":"@article{Bernhardt_Gharat_Kapp_Pfeiffer_Buschbeck_Hempel_Pashkin_Kehr_Rüsing_Sanna_et al._2024, title={Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment}, volume={222}, DOI={<a href=\"https://doi.org/10.1002/pssa.202300968\">10.1002/pssa.202300968</a>}, number={1}, journal={physica status solidi (a)}, publisher={Wiley}, author={Bernhardt, Felix and Gharat, Soham and Kapp, Alexander and Pfeiffer, Florian and Buschbeck, Robin and Hempel, Franz and Pashkin, Oleksiy and Kehr, Susanne C. and Rüsing, Michael and Sanna, Simone and et al.}, year={2024}, pages={2300968} }"},"department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"22501","_id":"59271","type":"journal_article","status":"public"},{"article_type":"original","article_number":"176549","department":[{"_id":"15"},{"_id":"288"},{"_id":"623"}],"user_id":"22501","_id":"59270","status":"public","type":"journal_article","doi":"10.1016/j.jallcom.2024.176549","volume":1008,"author":[{"last_name":"Bashir","full_name":"Bashir, Umar","first_name":"Umar"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","last_name":"Rüsing","orcid":"0000-0003-4682-4577"},{"first_name":"Detlef","full_name":"Klimm, Detlef","last_name":"Klimm"},{"first_name":"Roberts","last_name":"Blukis","full_name":"Blukis, Roberts"},{"first_name":"Boris","full_name":"Koppitz, Boris","last_name":"Koppitz"},{"first_name":"Lukas M.","full_name":"Eng, Lukas M.","last_name":"Eng"},{"full_name":"Bickermann, Matthias","last_name":"Bickermann","first_name":"Matthias"},{"first_name":"Steffen","full_name":"Ganschow, Steffen","last_name":"Ganschow"}],"date_updated":"2025-04-02T16:02:26Z","intvolume":"      1008","citation":{"ieee":"U. Bashir <i>et al.</i>, “Thermal conductivity in solid solutions of lithium niobate tantalate single crystals from 300 K up to 1300 K,” <i>Journal of Alloys and Compounds</i>, vol. 1008, Art. no. 176549, 2024, doi: <a href=\"https://doi.org/10.1016/j.jallcom.2024.176549\">10.1016/j.jallcom.2024.176549</a>.","chicago":"Bashir, Umar, Michael Rüsing, Detlef Klimm, Roberts Blukis, Boris Koppitz, Lukas M. Eng, Matthias Bickermann, and Steffen Ganschow. “Thermal Conductivity in Solid Solutions of Lithium Niobate Tantalate Single Crystals from 300 K up to 1300 K.” <i>Journal of Alloys and Compounds</i> 1008 (2024). <a href=\"https://doi.org/10.1016/j.jallcom.2024.176549\">https://doi.org/10.1016/j.jallcom.2024.176549</a>.","ama":"Bashir U, Rüsing M, Klimm D, et al. Thermal conductivity in solid solutions of lithium niobate tantalate single crystals from 300 K up to 1300 K. <i>Journal of Alloys and Compounds</i>. 2024;1008. doi:<a href=\"https://doi.org/10.1016/j.jallcom.2024.176549\">10.1016/j.jallcom.2024.176549</a>","apa":"Bashir, U., Rüsing, M., Klimm, D., Blukis, R., Koppitz, B., Eng, L. M., Bickermann, M., &#38; Ganschow, S. (2024). Thermal conductivity in solid solutions of lithium niobate tantalate single crystals from 300 K up to 1300 K. <i>Journal of Alloys and Compounds</i>, <i>1008</i>, Article 176549. <a href=\"https://doi.org/10.1016/j.jallcom.2024.176549\">https://doi.org/10.1016/j.jallcom.2024.176549</a>","mla":"Bashir, Umar, et al. “Thermal Conductivity in Solid Solutions of Lithium Niobate Tantalate Single Crystals from 300 K up to 1300 K.” <i>Journal of Alloys and Compounds</i>, vol. 1008, 176549, Elsevier BV, 2024, doi:<a href=\"https://doi.org/10.1016/j.jallcom.2024.176549\">10.1016/j.jallcom.2024.176549</a>.","bibtex":"@article{Bashir_Rüsing_Klimm_Blukis_Koppitz_Eng_Bickermann_Ganschow_2024, title={Thermal conductivity in solid solutions of lithium niobate tantalate single crystals from 300 K up to 1300 K}, volume={1008}, DOI={<a href=\"https://doi.org/10.1016/j.jallcom.2024.176549\">10.1016/j.jallcom.2024.176549</a>}, number={176549}, journal={Journal of Alloys and Compounds}, publisher={Elsevier BV}, author={Bashir, Umar and Rüsing, Michael and Klimm, Detlef and Blukis, Roberts and Koppitz, Boris and Eng, Lukas M. and Bickermann, Matthias and Ganschow, Steffen}, year={2024} }","short":"U. Bashir, M. Rüsing, D. Klimm, R. Blukis, B. Koppitz, L.M. Eng, M. Bickermann, S. Ganschow, Journal of Alloys and Compounds 1008 (2024)."},"publication_identifier":{"issn":["0925-8388"]},"publication_status":"published","language":[{"iso":"eng"}],"abstract":[{"text":"Lithium niobate tantalate (LiNb1−xTaxO3, LNT) solid solutions offer exciting new possibilities for applications ranging from optics, piezotronics, and electronics beyond the capabilities of the widely used singular compounds of lithium niobate (LiNbO3, LN) or lithium tantalate (LiTaO3, LT). Crystal growth of homogeneous LNT single crystals by the Czochralski method is still challenging. One key aspect of homogeneous growth is the accurate knowledge of thermal conductivity through the crystal boule during the growth, which is central to control the crystal growth. Therefore, the temperature dependent thermal conductivity of pure LN, LT, and LNT solid solutions, as well as of selected doped LN and LT crystals (Mg, Zn) was investigated across the temperature range from 300 to 1300 K. The results that span across the whole composition range can directly be applied for optimizing growth conditions of both LNT solid solutions as well as doped and undoped LN and LT crystals.","lang":"eng"}],"publication":"Journal of Alloys and Compounds","title":"Thermal conductivity in solid solutions of lithium niobate tantalate single crystals from 300 K up to 1300 K","date_created":"2025-04-02T16:00:56Z","publisher":"Elsevier BV","year":"2024","quality_controlled":"1"}]