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High-power compact continuous-wave Fe:ZnSe laser at 4μm with>50%overall conversion efficiency
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作者 Yanlong Shen Yingchao Wan +3 位作者 Feng Zhu tongxing chai Yousheng Wang Ke HuangState 《Chinese Optics Letters》 SCIE EI CAS CSCD 2024年第8期87-92,共6页
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%wi... 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. 展开更多
关键词 Fe:ZnSe mid-infrared laser high efficiency solid-state laser
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