A mid-infrared spectrometer based on difference frequency generation

被引：4
作者：
Deng, Lunhua
Han, Ling
Liang, Wanguo
Cao, Zhensong
Xu, Changqing
Zhang, Weijun
Gong, Zhiben
Gao, Xiaoming [1 ]
机构：
[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Opt Atmospher Lab, Hefei 230031, Peoples R China
[2] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Environm Spectroscopy Lab, Hefei 230031, Peoples R China
[3] McMaster Univ, Dept Engn Phys, Hamilton, ON, Canada
来源：
OPTICS AND LASERS IN ENGINEERING | 2007年 / 45卷 / 11期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
tunable Ti : Sapphire laser; Nd-YAG laser; trace gas detection;
D O I：
10.1016/j.optlaseng.2007.05.002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A mid-infrared spectrometer operating in the range from 3.42 to 4.78 mu m based on difference-frequency mixing of a tunable Ti:Sapphire laser and a diode-pumped monolithic Nd:YAG laser in periodically poled LiNbO3 (PPLN) crystals was developed. A system line width of about 36 MHz was obtained. An energy conversion efficiency of 0.6mW/W-2 was obtained at 3.70 mu m. The direct absorption spectra of pure methane and pure carbon dioxide samples were measured to test the performance of the spectrometer. (C) 2007 Published by Elsevier Ltd.
引用
收藏
页码：1055 / 1058
页数：4
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