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20 April 2024

» arxiv » 1812.6389

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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 ;
Date:	16 Dec 2018
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.
Source:	arXiv, 1812.6389
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