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arXiv · 2109.14506

Vibrational Kerr solitons in an optomechanical microresonator

Jia-Chen Shi·Qing-Xin Ji·Qi-Tao Cao·Yan Yu·Wenjing Liu·Qihuang Gong·Yun-Feng Xiao
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Abstract

Soliton microcombs based on Kerr nonlinearity in microresonators have been a prominent miniaturized coherent light source. Here, for the first time, we demonstrate the existence of Kerr solitons in an optomechanical microresonator, for which a nonlinear model is built by incorporating a single mechanical mode and multiple optical modes. Interestingly, an exotic vibrational Kerr soliton state is found, which is modulated by a self-sustained mechanical oscillation. Besides, the soliton provides extra mechanical gain through the optical spring effect, and results in phonon lasing with a red-detuned pump. Various nonlinear dynamics is also observed, including limit cycle, higher periodicity, and transient chaos. This work provides a guidance for not only exploring many-body nonlinear interactions, but also promoting precision measurements by featuring superiority of both frequency combs and optomechanics.

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Jia-Chen Shi, Qing-Xin Ji, Qi-Tao Cao, Yan Yu, Wenjing Liu, Qihuang Gong, Yun-Feng Xiao. 2021-09-29. Vibrational Kerr solitons in an optomechanical microresonator. https://doi.org/10.1103/physrevlett.128.073901

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