1 February 1997 Photoacoustic gas detection based on external cavity diode laser light sources
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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.
Janos Sneider, Zoltan Bozoki, Gabor Szabo, Zsolt Bor, "Photoacoustic gas detection based on external cavity diode laser light sources," Optical Engineering 36(2), (1 February 1997). https://doi.org/10.1117/1.601220
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