• Chinese Optics Letters
  • Vol. 20, Issue 11, 111902 (2022)
Zhenzhong Hao1, Li Zhang1, Jie Wang1, Fang Bo1、2、*, Feng Gao1、2, Guoquan Zhang1、2、**, and Jingjun Xu1、2、***
Author Affiliations
  • 1MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Institute of Applied Physics and School of Physics, Nankai University, Tianjin 300457, China
  • 2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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    DOI: 10.3788/COL202220.111902 Cite this Article
    Zhenzhong Hao, Li Zhang, Jie Wang, Fang Bo, Feng Gao, Guoquan Zhang, Jingjun Xu. Sum-frequency generation of a laser and its background in an on-chip lithium-niobate microdisk[J]. Chinese Optics Letters, 2022, 20(11): 111902 Copy Citation Text show less

    Abstract

    Lithium-niobate microcavities have not only the ability to resonantly enhance light–matter interaction but also excellent nonlinear optical properties, thereby providing an important platform for nonlinear optical investigations. In this paper, we report the observation of multi-peak spectra in the near infrared range in lithium-niobate microcavities on a chip under the pump of a 1550 nm continuous laser. Such a multi-peak spectrum was attributed to the sum-frequency of the pump laser and its background. The conversion efficiencies of the sum-frequency processes are of the order of 61.5%W-1. The influences of the phenomenon on nonlinear processes were further discussed.
    Zhenzhong Hao, Li Zhang, Jie Wang, Fang Bo, Feng Gao, Guoquan Zhang, Jingjun Xu. Sum-frequency generation of a laser and its background in an on-chip lithium-niobate microdisk[J]. Chinese Optics Letters, 2022, 20(11): 111902
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