Wavelength modulation detection of water vapor with a vertical cavity surface-emitting laser

被引：25

作者：

Hovde, DC ^{[1
]}

Parsons, CA ^{[1
]}

机构：

[1] PARTICLE MEASURING SYST,BOULDER,CO 80301

来源：

APPLIED OPTICS | 1997年 / 36卷 / 06期

关键词：

D O I：

10.1364/AO.36.001135

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A vertical cavity surface-emitting laser was studied for gas-sensing applications. Properties of the 962-nm laser that were measured include side-mode suppression, wavelength tuning with temperature and current, power versus injection current, and the amplitude noise spectrum. With wavelength modulation spectroscopy, a rms noise level of 2 x 10(-4) absorbance units was achieved. The large current tuning range (25 cm(-1)) and smaller amplitude modulation (11%/cm(-1)) of the vertical cavity laser compare favorably with Fabry-Perot and distributed feedback diode lasers for spectroscopic gas sensing, especially at atmospheric pressure. (C) 1997 Optical Society of America.

引用

页码：1135 / 1138

页数：4

共 16 条

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