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

被引：74

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

页码：347 / 350

页数：4

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