Widely tunable long-wave infrared difference frequency generation with a BaGa4Se7 crystal

被引：6

作者：

Liu, Pengxiang ^{[1
,2
]}

Li, Wei ^{[1
,2
,3
]}

Qi, Feng ^{[1
,2
]}

Guo, Liyuan ^{[1
,2
]}

Li, Weifan ^{[1
,2
]}

Fu, Qiaoqiao ^{[1
,2
,3
]}

Niu, Chuncao ^{[1
,2
]}

Xia, Mingjun ^{[4
]}

Yao, Jiyong ^{[4
]}

机构：

[1] Chinese Acad Sci, Shenyang Inst Automat, Shenyang 110169, Peoples R China

[2] Chinese Acad Sci, Inst Robot & Intelligent Mfg, Shenyang 110169, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Beijing Ctr Crystal Res & Dev, Beijing 100190, Peoples R China

来源：

APPLIED OPTICS | 2021年 / 60卷 / 35期

关键词：

OPTICAL PARAMETRIC OSCILLATOR; MU-M; EFFICIENCY;

D O I：

10.1364/AO.446136

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report an experimental study of long-wave infrared, difference frequency generation based on BaGa4Se7 crystal. The sources of two input wavelengths were the fundamental output of a Nd:YAG laser and its second-harmonic pumped similar to 1.2 mu m KTiOPO4 optical parametric oscillator. A wide tuning range of 7.9-17.5 mu m (>1.14 octave) was achieved, which reached the upper limit of the BaGa4Se7 transparency region. The spectra and pulse widths, input-output relationship, beam profile, wavelength tolerance, and angular acceptance of the phase-matching were characterized in detail. This presented coherent source can potentially be applied in multiple gas analyses and spectral imaging. (C) 2021 Optica Publishing Group

引用

页码：10984 / 10987

页数：4