Self-starting bi-chromatic LiNbO3 soliton microcomb
Self-starting bi-chromatic LiNbO3 soliton microcomb
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DOI：
10.1364/optica.6.001138
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发表时间：
2019-09-20
期刊：
影响因子：
10.4
通讯作者：
Lin, Qiang
中科院分区：
文献类型：
--
作者：
He, Yang;Yang, Qi-Fan;Lin, Qiang
铌酸锂（LN）波导器件的广泛功能，包括相位和强度调制，二次谐波产生和差频产生，使其作为潜在的微梳材料具有吸引力。LN微梳将基本的梳子自参考和控制功能与脉冲产生过程结合在一个单一的微谐振器装置中。在这里，我们展示了一个单片高q LN谐振器中的孤子微梳。在同一腔内观察到孤子谱的直接倍频。LN孤子锁模过程也可以自动启动，并允许孤子状态的双向切换，这是LN光折变效应的结果。克尔孤子表现出由LN的拉曼效应引起的自频移。这个微梳平台可以大大简化微型计时，频率合成/划分和光谱系统。此外，在LN微谐振器内直接产生飞秒时间尺度脉冲可以使量子光子学和信号处理系统受益。(C) 2019年美国光学学会根据OSA开放获取出版协议的条款
The wide range of functions that are possible with lithium niobate (LN) waveguide devices, including phase and intensity modulation, second-harmonic generation, and difference-frequency generation, makes it attractive as a potential microcomb material. LN microcombs would combine essential comb self-referencing and control functions with the pulse generation process in a single microresonator device. Here, we demonstrate a soliton microcomb in a monolithic high-Q LN resonator. Direct frequency doubling of the soliton spectrum is observed inside the same cavity. The LN soliton mode-locking process also self-starts and allows bi-directional switching of soliton states, effects that are shown to result from the LN photorefractive effect. The Kerr solitons exhibit a self-frequency shift resulting from the Raman effect of LN. This microcomb platform can dramatically simplify miniature time keeping, frequency synthesis/division, and spectroscopy systems. Moreover, direct generation of femtosecond timescale pulses within LN microresonators can benefit quantum photonics and signal processing systems. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement