High Repetition Rate, Tunable Mid-Infrared BaGa4Se7 Optical Parametric Oscillator Pumped by a 1 μm Nd:YAG Laser

Yixin He; Chao Yan; Kai Chen; Degang Xu; Jining Li; Kai Zhong; Yuye Wang; Rui Yao; Jiyong Yao; Jianquan Yao

doi:10.3390/app12147197

Applied Sciences (Jul 2022)

High Repetition Rate, Tunable Mid-Infrared BaGa4Se7 Optical Parametric Oscillator Pumped by a 1 μm Nd:YAG Laser

Yixin He,
Chao Yan,
Kai Chen,
Degang Xu,
Jining Li,
Kai Zhong,
Yuye Wang,
Rui Yao,
Jiyong Yao,
Jianquan Yao

Affiliations

Yixin He: Beijing Institute of Electronic System Engineering, Beijing 100854, China
Chao Yan: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China
Kai Chen: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China
Degang Xu: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China
Jining Li: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China
Kai Zhong: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China
Yuye Wang: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China
Rui Yao: Beijing Institute of Electronic System Engineering, Beijing 100854, China
Jiyong Yao: Beijing Center for Crystal Research and Development, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Jianquan Yao: School of Precision Instruments and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China

DOI: https://doi.org/10.3390/app12147197
Journal volume & issue: Vol. 12, no. 14
p. 7197

Abstract

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A tunable and compact mid-infrared optical parametric oscillator (OPO) based on BaGa4Se7 (BGSe) crystal with a repetition rate up to 250 Hz was demonstrated. A high energy and more approachable side-pumped Q-switched Nd:YAG laser was employed as the pump for the BGSe OPO. Due to the pump double-pass single-resonant oscillator (DP-SRO) configuration, the maximum average power of 250 mW and the maximum pulse energy of 1.28 mJ at 4.06 μm was achieved with the repetition rate of 250 Hz and 100 Hz, respectively. The tunable mid-infrared output from 3.42–4.73 μm was obtained. The influence of repetition rate and cavity length was studied and the thermal effect was analyzed.

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

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