Dual-comb interferometry utilizes two optical frequency combs to map the optical field’s spectrum to a radio-frequency signal without using moving parts, allowing improved speed and accuracy. However, the method is compounded by the complexity and demanding stability associated with operating multiple laser frequency combs. To overcome these challenges, we demonstrate simultaneous generation of multiple frequency combs from a single optical microresonator and a single continuous-wave laser. Similar to space-division multiplexing, we generate several dissipative Kerr soliton states—circulating solitonic pulses driven by a continuous-wave laser—in different spatial (or polarization) modes of a MgF₂ microresonator. Up to three distinct combs are produced simultaneously, featuring excellent mutual coherence and substantial repetition rate differences, useful for fast acquisition and efficient rejection of soliton intermodulation products. Dual-comb spectroscopy with amplitude and phase retrieval, as well as optical sampling of a breathing soliton, is realized with the free-running system. Compatibility with photonic-integrated resonators could enable the deployment of dual- and triple-comb-based methods to applications where they remained impractical with current technology.

双梳干涉法利用两个光学频率梳将光场的频谱映射到射频信号，而无需使用移动部件，从而提高了速度和精度。然而，该方法由于与操作多个激光频率梳相关联的复杂性和要求的稳定性而变得更加复杂。为了克服这些挑战，我们演示了从单个光学微谐振器和单个连续波激光器同时生成多个频率梳的情况。与空分复用类似，我们在MgF _2的不同空间（或偏振）模式下生成几个耗散的Kerr孤子状态（由连续波激光器驱动的循环孤子脉冲）。微谐振器。最多可同时生产三支不同的梳子，具有出色的相干性和相当大的重复率差异，可用于快速采集和有效抑制孤子互调产物。自由运行系统实现了具有幅度和相位恢复功能的双梳状光谱以及呼吸孤子的光学采样。与光子集成谐振器的兼容性可以将基于双梳和三梳的方法部署到当前技术仍不可行的应用中。