Photoacoustic gas detection based on external cavity diode laser light sources

被引：9

作者：

Sneider, J ^{[1
]}

Bozoki, Z ^{[1
]}

Szabo, G ^{[1
]}

Bor, Z ^{[1
]}

机构：

[1] JATE UNIV,DEPT OPT & QUANTUM ELECT,H-6701 SZEGED,HUNGARY

来源：

OPTICAL ENGINEERING | 1997年 / 36卷 / 02期

关键词：

photoacoustic and photothermal science and engineering; external cavity diode laser; Littman configuration; photoacoustic gas detection;

D O I：

10.1117/1.601220

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An external cavity diode laser is constructed and shown to have stable, narrow-linewidth operation around 840 nm. Based on this laser and a photoacoustic detector, a gas monitoring system capable of measuring absorption coefficients as low as 10(-8) cm(-1) is developed. The continuous (mode-hop-free) tuning range of the laser is found to exceed 100 GHz, which makes possible the spectrally resolved detection of water vapor absorption lines. The photoacoustic cell with the external cavity diode laser as a light source offers great potential for the development of a portable, automated gas detection system. (C) 1997 Society of Photo-Optical Instrumentation Engineers.

引用

页码：482 / 486

页数：5

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