Frequency combs are optical spectra composed of a set of discrete equally spaced lines. Such spectra can be generated by diverse sources such as mode-locked lasers, resonators, or electro-optic modulators. This last possibility has shown a growing interest in the recent years for its advantageous features in providing high repetition rates, intrinsic mutual coherence, or high power per comb lines. Moreover, applications of electro-optic modulator-based combs have flourished in fundamental physics, spectroscopy, or instrumental calibrations. In this paper, we present the most recent progresses made on frequency combs generated by electro-optic modulators, along with the applications where these combs have shown a particular interest.

中文翻译：

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电光频率梳

频率梳是由一组离散的等距线组成的光谱。这种光谱可以由多种来源产生，例如锁模激光器、谐振器或电光调制器。近年来，由于其在提供高重复率、内在相互相干性或每梳线的高功率方面的优势特征，最后一种可能性已显示出越来越大的兴趣。此外，基于电光调制器的梳子的应用在基础物理学、光谱学或仪器校准中得到了蓬勃发展。在本文中，我们介绍了由电光调制器生成的频率梳的最新进展，以及这些梳子表现出特别兴趣的应用。