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Dual-microcomb generation in a synchronously driven waveguide ring resonator
Optics Letters ( IF 3.6 ) Pub Date : 2021-12-01 , DOI: 10.1364/ol.443153
Yiqing Xu , Miro Erkintalo , Yi Lin , Stephane Coen , Huilian Ma , Stuart Murdoch

Microcombs—optical frequency combs generated in coherently driven nonlinear microresonators—have attracted significant attention over the last decade. The ability to generate two such combs in a single resonator device has, in particular, enabled a host of applications from spectroscopy to imaging. Concurrently, novel comb generation techniques such as synchronous pulsed driving have been developed to enhance the efficiency and flexibility of microcomb generation. Here, we report on the first, to the best of our knowledge, experimental demonstration of dual-microcomb generation via synchronous pulsed pumping of a single microresonator. Specifically, we use two electro-optically generated pulse trains derived from a common continuous wave laser to simultaneously drive two orthogonal polarization modes of an integrated silica ring resonator, observing the generation of coherent dissipative Kerr cavity soliton combs on both polarization axes. Thanks to the resonator birefringence, the two soliton combs are associated with different repetition rates, thus realizing a dual-microcomb source. To illustrate the source’s application potential, we demonstrate proof-of-concept spectroscopic measurements.

中文翻译:

同步驱动波导环形谐振器中的双微梳生成

微梳——在相干驱动的非线性微谐振器中产生的光学频率梳——在过去十年中引起了极大的关注。在单个谐振器设备中产生两个这样的梳子的能力尤其使从光谱到成像的许多应用成为可能。同时,已经开发了诸如同步脉冲驱动之类的新型梳状生成技术以提高微梳生成的效率和灵活性。在这里,我们报告了第一个,据我们所知,通过单个微谐振器的同步脉冲泵浦产生双微梳的实验演示。具体来说,我们使用来自普通连续波激光器的两个电光产生的脉冲序列同时驱动集成二氧化硅环形谐振器的两个正交偏振模式,观察在两个偏振轴上产生相干耗散克尔腔孤子梳。由于谐振腔双折射,两个孤子梳具有不同的重复率,从而实现了双微梳源。为了说明该源的应用潜力,我们展示了概念验证光谱测量。
更新日期:2021-12-02
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