Wideband tunable mid-infrared laser generating from near-infrared laser pumped BaGa4Se7 crystal

Kai Chen; Degang Xu; Jining Li; Kai Zhong; Yuye Wang; Jianquan Yao

doi:10.1117/12.3046599

13 December 2024 Wideband tunable mid-infrared laser generating from near-infrared laser pumped BaGa₄Se₇ crystal

Kai Chen, Degang Xu, Jining Li, Kai Zhong, Yuye Wang, Jianquan Yao

Author Affiliations +

Proceedings Volume 13492, AOPC 2024: Laser Technology and Applications; 134920H (2024) https://doi.org/10.1117/12.3046599
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

We have demonstrated wideband tunable optical parametric oscillator (OPO) based on BaGa₄Se₇ crystal. A pump doublepass, short cavity, singly resonant OPO configuration was used to improve the optical conversion efficiency and reduce the OPO threshold. Using a commercial nanosecond laser with a repetition rate of 10 Hz as the pump source, the tuning range of BaGa4Se7-OPO achieved 3.10-4.84 and 8.24-13.34 µm in mid-wave and long-wave infrared band respectively. The maximum single pulse energy of reached 8.55 mJ at 3.88 µm and 0.855 mJ at 10.8 μm. To achieve high repetition rate operating, an electro-optic Q-switched laser with repetition rate of 1 kHz was built. The high repetition rate BaGa₄Se₇- OPO have a maximum output power of 564 mW at 3.87 μm and a tuning range of 2.99-5.04 µm.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Kai Chen, Degang Xu, Jining Li, Kai Zhong, Yuye Wang, and Jianquan Yao "Wideband tunable mid-infrared laser generating from near-infrared laser pumped BaGa₄Se₇ crystal", Proc. SPIE 13492, AOPC 2024: Laser Technology and Applications, 134920H (13 December 2024); https://doi.org/10.1117/12.3046599

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