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arXiv · 2106.04933

Integrated LNOI single-mode lasers by Vernier effect

Ru Zhang·Chen Yang·Zhenzhong Hao·Di Jia·Qiang Luo·Dahuai Zheng·Hongde Liu·Xuanyi Yu·Feng Gao·Fang Bo·Yongfa Kong·Guoquan Zhang·Jingjun Xu
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Abstract

Microcavity lasers based on erbium-doped lithium niobate on insulator (LNOI), which are key devices for LNOI integrated photonics, have attracted much attention recently. In this Letter, we report the realization of a C-band single-mode laser using Vernier effect in two coupled Erbium-doped LNOI microrings with different radii under the pump of a 980-nm continuous laser. The laser, operating stably over a large range of pumping power, has a pump threshold of ~200 {\mu}W and a side-mode suppression ratio exceeding 26 dB. The high-performance LNOI single-mode laser will promote the development of lithium niobate integrated photonics.

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Ru Zhang, Chen Yang, Zhenzhong Hao, Di Jia, Qiang Luo, Dahuai Zheng, Hongde Liu, Xuanyi Yu, Feng Gao, Fang Bo, Yongfa Kong, Guoquan Zhang, Jingjun Xu. 2021-06-09. Integrated LNOI single-mode lasers by Vernier effect. https://doi.org/10.1007/s11433-021-1749-x

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