Widely-tuned longwave mid-infrared optical parametric oscillator based on BaGa4Se7 crystal

Degang Xu; Jiaxin Zhang; Yuye Wang; Jiyong Yao; Yangwu Guo; Kai Chen; Chao Yan; Jianquan Yao

doi:10.1117/12.2601053

9 October 2021 Widely-tuned longwave mid-infrared optical parametric oscillator based on BaGa₄Se₇ crystal

Degang Xu, Jiaxin Zhang, Yuye Wang, Jiyong Yao, Yangwu Guo, Kai Chen, Chao Yan, Jianquan Yao

Proceedings Volume 11890, Advanced Lasers, High-Power Lasers, and Applications XII; 1189014 (2021) https://doi.org/10.1117/12.2601053
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

We have demonstrated a high energy, widely tunable, long-wave mid-infrared optical parametric oscillator based on BaGa₄Se₇ crystal (BaGa₄Se₇-OPO) which was pumped by an economical wavelength of 1.064μm. The BaGa₄Se₇-OPO was designed as a double pass single resonant oscillator (DP-SRO), with the advantages of low threshold and high output. The output energy and conversion efficiency of BaGa₄Se₇-OPO with different cavity lengths were studied theoretically and experimentally. The maximum mid-infrared energy of 611μJ/pulse at 11μm was obtained, and the corresponding optical-to-optical conversion efficiency was 1.53%. A wide tuning range of 8.24-13.3μm was achieved by rotating the BaGa₄Se₇ crystal and it can be well matched with the theoretical calculation.

Citation Download Citation

Degang Xu, Jiaxin Zhang, Yuye Wang, Jiyong Yao, Yangwu Guo, Kai Chen, Chao Yan, and Jianquan Yao "Widely-tuned longwave mid-infrared optical parametric oscillator based on BaGa₄Se₇ crystal", Proc. SPIE 11890, Advanced Lasers, High-Power Lasers, and Applications XII, 1189014 (9 October 2021); https://doi.org/10.1117/12.2601053

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