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arXiv · 1812.06389

Generation of optical frequency comb in a chi-2 sheet micro optical parametric oscillator via cavity phase matching

Xinjie Lv·Xin Ni·Zhenda Xie·Shu-Wei Huang·Baicheng Yao·Huaying Liu·Nicolo Sernicola·Gang Zhao·Zhenlin Wang·Shi-Ning Zhu
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Abstract

Chi-3 micro resonators have enabled compact and portable frequency comb generation, but require sophisticated dispersion control. Here we demonstrate an alternative approach using a chi-2 sheet cavity, where the dispersion requirement is relaxed by cavity phase matching. 21.2 THz broadband comb generation is achieved with uniform line spacing of 133.0 GHz, despite a relatively large dispersion of 275.4 fs^2/mm around 1064nm. With 22.6 % high slope efficiency and 14.9 kW peak power handling, this chi-2 comb can be further stabilized for navigation, telecommunication, astronomy, and spectroscopy applications.

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Xinjie Lv, Xin Ni, Zhenda Xie, Shu-Wei Huang, Baicheng Yao, Huaying Liu, Nicolo Sernicola, Gang Zhao, Zhenlin Wang, Shi-Ning Zhu. 2018-12-16. Generation of optical frequency comb in a chi-2 sheet micro optical parametric oscillator via cavity phase matching. https://arxiv.org/abs/1812.06389

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