Generation of nanosecond 2.65μm pulses and pulse narrowing in fiber-bulk Ho3+:YAG laser pumped gain-switched Cr^2+:Cd Se laser  

作　　者：Hengkang Zhang Encai Ji Bin Zhang Yi Chen Baoquan Yao Qiang Liu 张恒康;吉恩才;张彬;陈毅;姚宝权;柳强(Key Laboratory of Photonic Control Technology(Tsinghua University),Ministry of Education,Beijing 100084,China;State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China;School of Electronic and Information Engineering,Harbin Institute of Technology,Shenzhen 518055,China;National Key Laboratory of Tunable Laser Technology,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]Key Laboratory of Photonic Control Technology(Tsinghua University),Ministry of Education,Beijing 100084,China [2]State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China [3]School of Electronic and Information Engineering,Harbin Institute of Technology,Shenzhen 518055,China [4]National Key Laboratory of Tunable Laser Technology,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Chinese Optics Letters》2020年第3期50-56,共7页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2017YFB1104500);the China Postdoctoral Science Foundation(No.2018M630355);the National Natural Science Foundation of China(Nos.61905128 and61905150)。

摘　　要：The generation of mid-infrared pulsed lasers was achieved in a Ho3+:YAG laser pumped gain-switched Cr^2+:Cd Se laser system with the shortest pulse duration of 4.15 ns.With a pump pulse duration of 50 ns and pump power of 2.7 W,the gain-switched Cr^2+:Cd Se laser achieved over 10 times pulse narrowing,obtaining the maximum peak power of 5.7 k W.The optical-to-optical conversion efficiency was 3.7%,which could be further improved with better crystal surface polishing quality.The laser central wavelength was measured to be 2.65μm with a bandwidth(FWHM)of 50 nm.In addition,the parameter optimization for suppressing the pulse tail was discussed,while the long cavity and high output transmissivity contributed to obtaining the single-peak pulses.

关 键 词：Cr^2+:CdSe LASER GAIN-SWITCHING PULSE NARROWING mid-infrared 

分 类 号：TN248[电子电信—物理电子学]