Mode‐locked ultrashort pulse sources with a repetition rate of up to several tens of gigahertz greatly facilitate versatile photonic applications such as frequency synthesis, metrology, radar, and optical communications. Dissipative Kerr soliton microcombs provide an attractive solution as a broadband, high‐repetition‐rate compact laser system in this context. However, its operation usually requires sophisticated pump laser control to initiate and stabilize the soliton microcombs, particularly in millimeter‐sized ultrahigh‐Q whispering‐gallery resonators. Here, a mechanically actuated soliton microcomb oscillator is realized with a microwave repetition rate of 15 GHz. This enables direct initiation, subsequent long‐term stabilization, and fine tuning of soliton combs without pump laser tunability that is generally required for soliton microcomb operation. The prospects for using this method with a wide range of applications are revealed that will benefit from mechanical soliton actuation such as optical clocks, spectral extension, and dual‐comb spectroscopy.

中文翻译：

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机械驱动克尔孤子微梳

重复率高达几十吉赫兹的锁模超短脉冲源极大地促进了频率合成、计量、雷达和光通信等多种光子应用。在这种情况下，耗散克尔孤子微梳作为宽带、高重复率紧凑型激光系统提供了一种有吸引力的解决方案。然而，其操作通常需要复杂的泵浦激光控制来启动和稳定孤子微梳，特别是在毫米级超高Q回音壁谐振器中。这里，实现了微波重复率为 15 GHz 的机械驱动孤子微梳振荡器。这使得孤子梳能够直接启动、随后的长期稳定和微调，而无需孤子微梳操作通常所需的泵浦激光可调谐性。该方法具有广泛应用的前景，将受益于机械孤子驱动，例如光学时钟、光谱扩展和双梳光谱。