High-Energy Tunable 6.5-12 μm Picosecond Mid-Infrared Radiation Generated from Optical Parametric Amplifier Based on LiInSe_(2) Crystal  

作　　者：Zhang Jingjing Wang Shilei Yang Feng Wang Shanpeng Gao Hongwei Bo Yong Cui Dafu Tao Xutang Peng Qinjun 

机构地区：[1]Key Lab of Solid State Laser,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,Shandong,China

出　　处：《激光与光电子学进展》2024年第13期457-462,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61875208,U22A20123,52372011);国家高层次科技人才特殊支持计划(创新领军人才计划国防科技创新基金)(SQ2022RA24910010);山东省自然科学基金(ZR2022MF228)。

摘　　要：We report high-energy tunable 6.5-12 μm ps mid-infrared radiation generation based on OPA pumped using 1064 nm laser in LISe crystal.We simulated the relationship between the idler energy and crystal length.An optimum LISe length of 4 mm was used to enhance the idler energy experimentally.At a pump energy of ~9.4 mJ, energy levels of ~146 and of ~27 μJ are generated at 6.5 μm and 12 μm, respectively.The highest energy of ~205 μJ is achieved at 8.1 μm at a pump energy of ~19 mJ.Finally, the angular and spectral width acceptance are measured.

关 键 词：tunable mid-infrared radiation nonlinear optical crystal LiInSe2 crystal optical parametric amplifier 

分 类 号：O437.4[机械工程—光学工程]