Repetition rate tuning and locking of solitons in a microrod resonator
Rui Niu, Shuai Wan, Shuman Sun, Taigao Ma, Hao-Jing Chen, Weiqiang Wang, Zhizhou Lu, Wenfu Zhang, Guang‐Can Guo, Chang‐Ling Zou, Chun‐Hua Dong
Abstract
Recently, there has been significant interest in the generation of coherent temporal solitons in optical microresonators. In this Letter, we present a demonstration of dissipative Kerr soliton generation in a microrod resonator using an auxiliary-laser-assisted thermal response control method. In addition, we are able to control the repetition rate of the soliton over a range of 200 kHz while maintaining the pump laser frequency, by applying external stress tuning. Through the precise control of the PZT voltage, we achieve a stability level of 3.9 × 10 −10 for residual fluctuation of the repetition rate when averaged 1 s. Our platform offers precise tuning and locking capabilities for the repetition frequency of coherent mode-locked combs in microresonators. This advancement holds great potential for applications in spectroscopy and precision measurements.