Ultra-low-loss integrated visible photonics using thin-film lithium niobate
Ultra-low-loss integrated visible photonics using thin-film lithium niobate
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DOI：
10.1364/optica.6.000380
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发表时间：
2019-03-20
期刊：
影响因子：
10.4
通讯作者：
Loncar, Marko
中科院分区：
文献类型：
--
作者：
Desiatov, Boris;Shams-Ansari, Amirhassan;Loncar, Marko
集成光子学是一个强大的平台，可以提高光学系统的性能和稳定性，同时为基于自由空间光学的实现提供低成本、小足迹和可扩展的替代方案。虽然在电信波长的低损耗集成光子学平台的发展已经取得了很大的进展，但可见光波长范围却很少受到关注。然而，许多应用都利用可见光或近可见光，包括光学成像、光遗传学和量子科学与技术。在这里，我们展示了一种基于绝缘体上铌酸锂薄膜的超低损耗集成可见光子平台。我们的波导具有6 dB/m的超低传播损耗，而我们的微环谐振器具有1100万的内在质量因子，两者都在637 nm波长下测量。此外，我们展示了一个片上可见强度调制器，其电光带宽为10 GHz，受所使用检测器的限制。在这项工作中展示的超低损耗器件，加上铌酸锂中强烈的二阶和三阶非线性，为在可见光谱范围内创建用于频率计量和量子信息处理的新型无源和有源器件开辟了新的机会。(C) 2019年美国光学学会根据OSA开放获取出版协议的条款
Integrated photonics is a powerful platform that can improve the performance and stability of optical systems while providing low-cost, small-footprint, and scalable alternatives to implementations based on free-space optics. While great progress has been made on the development of low-loss integrated photonics platforms at telecom wavelengths, the visible wavelength range has received less attention. Yet, many applications utilize visible or near-visible light, including those in optical imaging, optogenetics, and quantum science and technology. Here we demonstrate an ultra-low-loss integrated visible photonics platform based on thin-film lithium niobate on an insulator. Our waveguides feature ultra-low propagation loss of 6 dB/m, while our microring resonators have an intrinsic quality factor of 11 million, both measured at 637 nm wavelength. Additionally, we demonstrate an on-chip visible intensity modulator with an electro-optic bandwidth of 10 GHz, limited by the detector used. The ultra-low-loss devices demonstrated in this work, together with the strong second-and third-order nonlinearities in lithium niobate, open up new opportunities for creating novel passive and active devices for frequency metrology and quantum information processing in the visible spectrum range. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement