Compact mid-infrared trace gas sensor based on difference-frequency generation of two diode lasers in periodically poled LiNbO3

被引：73
|
作者：
Richter, D
Lancaster, DG
Curl, RF
Neu, W
Tittel, FK
机构：
[1] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA
[2] Univ Appl Sci, Fachhsch Ostfriesland, D-26723 Emden, Germany
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 67卷 / 03期
关键词：
PACS: 7.65; 42.60B; 42.80;
D O I：
10.1007/s003400050514
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The development and characterization of a compact mid-infrared source for high-resolution spectroscopic detection of trace gases such as methane and water vapor at 3.3 mu m in ambient air is reported. This source utilizes difference frequency generation (DFG) in a periodically poled LiNbO3 (PPLN) crystal pumped by two single-frequency diode lasers. A maximum DFG power of 1.6 mu W at 3.6 mu m was generated with a pump power of 61.4 mW at 832 nm and a signal power of 41.5 mW at 1083 nm incident on a 19-mm-long PPLN crystal, which corresponds to a conversion efficiency of 335 mu WW-2 cm(-1).
引用
收藏
页码：347 / 350
页数：4
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