High-power compact continuous-wave Fe:ZnSe laser at 4μm with>50%overall conversion efficiency  

作　　者：Yanlong Shen Yingchao Wan Feng Zhu Tongxing Chai Yousheng Wang Ke HuangState 沈炎龙;万颖超;朱峰;柴童星;汪由胜;黄珂(Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,Xi’an 710024,China

出　　处：《Chinese Optics Letters》2024年第8期87-92,共6页中国光学快报（英文版）

基　　金：supported by the Fund of the State Key Laboratory of Laser Interaction with Matter(No.SKLLIM1912)。

摘　　要：We report on a compact,high-efficiency mid-infrared continuous-wave(CW)Fe:ZnSe laser pumped by a 2.9μm fiber laser under liquid nitrogen cooling.A maximum output power of 5.5 W and a slope efficiency of up to 66.3%with respect to the launched pump power were obtained.The overall optical-to-optical(OTO)conversion efficiency,calculated from the output of the 2.9μm fiber laser to the 4μm laser,was as high as~54.5%.The OTO efficiency and the slope efficiency are,to the best of our knowledge,the highest ever reported in Fe:ZnSe lasers.A rate-equation-based numerical model of CW operation was established,and the simulation agreed well with the experiment,identifying the routes used in the experiment for such high efficiency.

关 键 词：Fe:ZnSe mid-infrared laser high efficiency solid-state laser 

分 类 号：TN248[电子电信—物理电子学]