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Optical Engineering

Photoacoustic gas detection based on external cavity diode laser light sources
Author(s): Janos Sneider; Zoltan Bozoki; Gabor Szabo; Zsolt Bor
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Paper Abstract

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.

Paper Details

Date Published: 1 February 1997
PDF: 5 pages
Opt. Eng. 36(2) doi: 10.1117/1.601220
Published in: Optical Engineering Volume 36, Issue 2
Show Author Affiliations
Janos Sneider, Hungarian Academy of Sciences (Hungary)
Zoltan Bozoki, JATE Univ. (Hungary)
Gabor Szabo, Jate Univ. (Hungary)
Zsolt Bor, Jozsef Attila Tudomanyegyetem (Hungary)

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