[{"article_number":"19669","language":[{"iso":"eng"}],"doi":"10.1364/oe.395545","title":"Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation","year":"2020","author":[{"last_name":"Zhao","first_name":"Jie","full_name":"Zhao, Jie"},{"full_name":"Rüsing, Michael","last_name":"Rüsing","first_name":"Michael","orcid":"0000-0003-4682-4577","id":"22501"},{"full_name":"Javid, Usman A.","last_name":"Javid","first_name":"Usman A."},{"first_name":"Jingwei","last_name":"Ling","full_name":"Ling, Jingwei"},{"full_name":"Li, Mingxiao","last_name":"Li","first_name":"Mingxiao"},{"full_name":"Lin, Qiang","first_name":"Qiang","last_name":"Lin"},{"first_name":"Shayan","last_name":"Mookherjea","full_name":"Mookherjea, Shayan"}],"publication_identifier":{"issn":["1094-4087"]},"date_updated":"2023-10-11T08:11:08Z","publication_status":"published","intvolume":"        28","article_type":"original","date_created":"2023-10-11T08:09:52Z","type":"journal_article","keyword":["Atomic and Molecular Physics","and Optics"],"issue":"13","publication":"Optics Express","abstract":[{"text":"High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched second-harmonic generation using the fundamental, quasi-TE polarized waveguide modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled accurately over 5 mm. The high fidelity of the poling is demonstrated over long lengths using a non-destructive technique of confocal scanning second-harmonic microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W (length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40 °C without measurable loss of efficiency.","lang":"eng"}],"extern":"1","_id":"47958","publisher":"Optica Publishing Group","user_id":"22501","volume":28,"status":"public","citation":{"mla":"Zhao, Jie, et al. “Shallow-Etched Thin-Film Lithium Niobate Waveguides for Highly-Efficient Second-Harmonic Generation.” <i>Optics Express</i>, vol. 28, no. 13, 19669, Optica Publishing Group, 2020, doi:<a href=\"https://doi.org/10.1364/oe.395545\">10.1364/oe.395545</a>.","bibtex":"@article{Zhao_Rüsing_Javid_Ling_Li_Lin_Mookherjea_2020, title={Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation}, volume={28}, DOI={<a href=\"https://doi.org/10.1364/oe.395545\">10.1364/oe.395545</a>}, number={1319669}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Zhao, Jie and Rüsing, Michael and Javid, Usman A. and Ling, Jingwei and Li, Mingxiao and Lin, Qiang and Mookherjea, Shayan}, year={2020} }","ama":"Zhao J, Rüsing M, Javid UA, et al. Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation. <i>Optics Express</i>. 2020;28(13). doi:<a href=\"https://doi.org/10.1364/oe.395545\">10.1364/oe.395545</a>","ieee":"J. Zhao <i>et al.</i>, “Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation,” <i>Optics Express</i>, vol. 28, no. 13, Art. no. 19669, 2020, doi: <a href=\"https://doi.org/10.1364/oe.395545\">10.1364/oe.395545</a>.","apa":"Zhao, J., Rüsing, M., Javid, U. A., Ling, J., Li, M., Lin, Q., &#38; Mookherjea, S. (2020). Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation. <i>Optics Express</i>, <i>28</i>(13), Article 19669. <a href=\"https://doi.org/10.1364/oe.395545\">https://doi.org/10.1364/oe.395545</a>","chicago":"Zhao, Jie, Michael Rüsing, Usman A. Javid, Jingwei Ling, Mingxiao Li, Qiang Lin, and Shayan Mookherjea. “Shallow-Etched Thin-Film Lithium Niobate Waveguides for Highly-Efficient Second-Harmonic Generation.” <i>Optics Express</i> 28, no. 13 (2020). <a href=\"https://doi.org/10.1364/oe.395545\">https://doi.org/10.1364/oe.395545</a>.","short":"J. Zhao, M. Rüsing, U.A. Javid, J. Ling, M. Li, Q. Lin, S. Mookherjea, Optics Express 28 (2020)."}}]