A BaGa4Se7 crystal based pulsed mid-infrared light source with a narrow linewidth in 4-12 μm

被引：3

作者：

Xiao, Zengjun ^{[1
,2
]}

Gu, Jieqiong ^{[1
,2
]}

Wang, Zhaofeng ^{[1
,2
]}

Chu, Wangyou ^{[1
,2
]}

Zhang, Qiang ^{[1
,2
]}

Chen, Yang ^{[1
,2
]}

Zhao, Dongfeng ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Anhui, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2023年 / 94卷 / 09期

基金：

国家重点研发计划;

关键词：

OPTICAL PARAMETRIC OSCILLATOR; HIGH-ENERGY; HIGH-POWER; CONVERSION; CAVITY; WAVELENGTH; EFFICIENCY; OUTPUT; RANGE; BAND;

D O I：

10.1063/5.0167190

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present a BaGa4Se7 (BGSe) crystal based coherent pulsed light source for high resolution mid-infrared (MIR) spectroscopy in the 4-12 mu m region. The all-solid-state system consists of an injection seeded optical parametric generator (OPG) and an optical parametric amplifier (OPA) using two KTiOPO4 crystals. The idler output of OPG-OPA and the fundamental output (1064 nm) of a wavelength stabilized Nd:YAG laser are employed for difference frequency generation of MIR pulses in the BGSe crystal. Pulsed MIR radiation in the 4-12 mu m range is obtained with typical pulse energies higher than 100 mu J and pulse durations of similar to 5 ns. By measuring H2O absorption lines in the 8 mu m region with this MIR light source and a cavity ring-down spectrometer, the linewidth of the MIR source is inferred as 120 +/- 10 MHz, which is very close to the Fourier-transform limited linewidth of 5 ns laser pulses.

引用

页数：5