High-Energy Tunable 6.5?12 μm Picosecond Mid-Infrared Radiation Generated from Optical Parametric Amplifier Based on LiInSe2 Crystal

Zhang Jingjing ¹Wang Shilei ²Yang Feng ³Wang Shanpeng ²Gao Hongwei ³Bo Yong ³Cui Dafu ³Tao Xutang ²Peng Qinjun³

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作者信息

1. Key Lab of Solid State Laser,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China
2. State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,Shandong,China
3. Key Lab of Solid State Laser,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China
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Abstract

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.

Key words

tunable mid-infrared radiation/nonlinear optical crystal/LiInSe2 crystal/optical parametric amplifier

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基金项目

国家自然科学基金(61875208)

国家自然科学基金(U22A20123)

国家自然科学基金(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)

出版年

2024

激光与光电子学进展

中国科学院上海光学精密机械研究所

激光与光电子学进展

CSTPCD北大核心

影响因子：1.153

ISSN：1006-4125

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