Chinese Academy of Sciences

Goucong Guo

Mingjian Zhang

Binwen Liu

Huiyi Zeng

Yuhang Fan

Xiaoming Jiang

This disclosure provides an optical parametric oscillator, comprising, in a light path, a first lens, a laser crystal, a second lens, a nonlinear optical crystal, and a third lens in this order, wherein an optical parametric oscillation chamber is formed between the second lens and the third lens, and the nonlinear optical crystal is a monoclinic GaScrystal, the space group of the monoclinic GaScrystal is Cc, and the unit cell parameters are a=11.1 &#x212b;, b=6.4 &#x212b;, c=7.0 &#x212b;, &#x3b1;=90&#xb0;, &#x3b2;=121&#xb0;, &#x3b3;=90&#xb0;, and Z=4.

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Fuzhou, China

Goucong Guo