Efficient continuous wave and passively Q switched Er:GdScO3 laser using Fe:ZnSe at 2.8?m

Wentao Hou,Yanyan Xue,Zhipeng Qin,Huili Tang,Guoqiang Xie,Qingguo Wang,Xiaodong Xu, Jun Xu

Optics letters（2023）

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Abstract

We report on diode-pumped continuous wave and passively Q switched Er:GdScO3 crystal lasers at around 2.8 mu m. A continuous wave output power of 579 mW was obtained with a slope efficiency of 16.6%. Using Fe:ZnSe as a saturable absorber, a passively Q switched laser operation was real-ized. A maximum output power of 32 mW was generated with the shortest pulse duration of 286 ns at a repetition rate of 157.3 kHz, leading to a pulse energy of 204 nJ and a pulse peak power of 0.7 W.(c) 2023 Optica Publishing Group

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