Qian Chuanpeng, Duan Xiaoming, Yao Baoquan, Shen Yingjie, Zhang Ye, Zhao Benrui, Yuan Jinhe, Dai Tongyu, Ju Youlun, Wang Yuezhu
Opt Express. 2018 Nov 12;26(23):30195-30201. doi: 10.1364/OE.26.030195.
In this paper we present a high power long-wave infrared ZnGeP (ZGP) optical parametric amplifier (OPA) pumped by a 2097-nm Q-switched Ho:YAG laser with pulse repetition frequency of 20 kHz. When the incident Ho pump power was 116.0 W, the maximum average output power of 11.4 W at 8.3 μm was achieved in the ZGP OPA. The optical conversion efficiency from Ho to long-wave infrared was about 9.8%. The ZGP OPA produced 30.4 ns long-wave infrared laser pulse. The beam quality factor (M) of ZGP OPA was measured to be about 2.9 at the maximum average output power.
在本文中，我们展示了一种由脉冲重复频率为20 kHz的2097 nm调Q Ho:YAG激光器泵浦的高功率长波红外ZnGeP（ZGP）光学参量放大器（OPA）。当入射Ho泵浦功率为116.0 W时，ZGP OPA在8.3μm处实现了11.4 W的最大平均输出功率。从Ho到长波红外的光学转换效率约为9.8%。ZGP OPA产生了30.4 ns的长波红外激光脉冲。在最大平均输出功率下，ZGP OPA的光束质量因子（M）测量值约为2.9。
