Abstract

We report a high energy, narrow spectral linewidth mid-infrared laser pulse output from a ${\rm{Nd}}{:}{{\rm{Y}}_3}{\rm{A}}{{\rm{l}}_5}{{\rm{O}}_{12}}$ laser-pumped ${\rm{BaG}}{{\rm{a}}_4}{\rm{S}}{{\rm{e}}_7}$ (BGSe) crystal-based optical parametric oscillator (OPO). Output pulse energy of 21.5 mJ was obtained at 3816 nm, with spectral width of 12 nm and pulse width of 11.4 ns, corresponding to peak power as high as 1.89 MW. A BGSe crystal with aperture size of ${{10}}\;{\rm{mm}} \times {{10}}\;{\rm{mm}}$ and length of 16 mm was applied as the nonlinear crystal in a pump fed back OPO for achieving such high pulse energy output from the simple oscillator scheme.

© 2020 Optical Society of America

High-energy, tunable, long-wave mid-infrared optical parametric oscillator based on BaGa₄Se₇ crystal

Degang Xu, Jiaxin Zhang, Yixin He, Yuye Wang, Jiyong Yao, Yangwu Guo, Chao Yan, Longhuang Tang, Jining Li, Kai Zhong, Yicheng Wu, and Jianquan Yao
Opt. Lett. 45(18) 5287-5290 (2020)

Research on performance improvement technology of a BaGa₄Se₇ mid-infrared optical parametric oscillator

Ke Yang, Gaoyou Liu, Chunxiao Li, Baoquan Yao, Jiyong Yao, Yi Chen, Shuyi Mi, Xiaoming Duan, and Tongyu Dai
Opt. Lett. 45(23) 6418-6421 (2020)

High-beam-quality 2.1 µm pumped mid-infrared type-II phase-matching BaGa₄Se₇ optical parametric oscillator with a ZnGeP₂ amplifier

Gaoyou Liu, Yi Chen, Zhuang Li, Ke Yang, Baoquan Yao, Jiyong Yao, Ruixue Wang, Chao Yang, Shuyi Mi, Tongyu Dai, and Xiaoming Duan
Opt. Lett. 45(13) 3805-3808 (2020)

High-conversion-efficiency tunable mid-infrared BaGa₄Se₇ optical parametric oscillator pumped by a 2.79-μm laser

Shuwu Hu, Li Wang, Yangwu Guo, Tingqing Cheng, Xianyou Wu, Zhenyou Wang, Haixin Wu, Jiyong Yao, Yicheng Wu, and Haihe Jiang
Opt. Lett. 44(9) 2201-2203 (2019)

Ultrabroad (3.7–17 µm) tunable femtosecond optical parametric amplifier based on BaGa₄Se₇ crystal

Kan Tian, Weizhe Wang, Chunxiao Li, Zhongjun Wan, Bo Hu, Linzhen He, Maoxing Xiang, Jiyong Yao, Han Wu, and Houkun Liang
Opt. Lett. 47(22) 5973-5976 (2022)