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A high-beam-quality passively Q-switched 2 μm solid-state laser with a WSe2 saturable absorber
Optics & Laser Technology ( IF 5 ) Pub Date : 2019-12-19 , DOI: 10.1016/j.optlastec.2019.105960
Linjun Li , Wenchao Cui , Xining Yang , Long Zhou , Yuqiang Yang , Wenqiang Xie , Xiaoming Duan , Yingjie Shen , Jing Han

In this paper, using the new WSe2 nanosheets as the saturable absorber (SA), a passively Q-switched (PQS) Tm:YAP laser was faultlessly realized. A 1.29-W average output power at 1988.3 nm and a 392.7-ns pulse duration were obtained with a 12.3% optical conversion efficiency, and a 11.3-µJ pulse energy and a 28.9-W peak power were gained with a 12.5-W pump power. In addition, the beam quality factors of Tm:YAP laser in X and Y directions were less than 1.2 under continuous wave (CW) and PQS mode.



中文翻译:

具有WSe 2饱和吸收体的高光束质量无源Q开关2μm固态激光器

在本文中,使用新型WSe 2纳米片作为可饱和吸收体(SA),可以无故障地实现无源Q开关(PQS)Tm:YAP激光器。1988.3 nm处的平均输出功率为1.29 W,脉冲持续时间为392.7 ns,光转换效率为12.3%,泵浦功率为12.5 W时,脉冲能量为11.3 µJ,峰值功率为28.9 W 。另外,在连续波(CW)和PQS模式下,Tm:YAP激光器在X和Y方向上的光束质量因子均小于1.2。

更新日期:2019-12-19
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