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Proceedings Paper

Neutral gas laser: a tool for sensing of atmospheric species by infrared absorption
Author(s): Joda C. Wormhoudt; Paul L. Kebabian
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Paper Abstract

In the spectroscopic analysis of atmospheric composition, there is a continuing need for stable and reproducible mid-infrared light sources. The neutral rare gas lasers offer several important benefits, in the many cases where one of their lines coincides with an absorption line of an atmospheric species to be observed. As atomic spectral lines, they are not subject to the drift and aging effects seen in diode lasers. Furthermore, the Zeeman effect provides up to a few tenths of a wavenumber of tunability, which can be an advantage over molecular lasers (such as CO2) which can only be tuned by line selection. We present observations in applications of neutral rare gas lasers to measurements of CO, N2O and CH4, and discuss possible applications to a variety of other species, including formaldehyde, methanol, hydrazine, water vapor, and the methyl radical.

Paper Details

Date Published: 27 July 1994
PDF: 9 pages
Proc. SPIE 2138, Longer Wavelength Lasers and Applications, (27 July 1994); doi: 10.1117/12.181352
Show Author Affiliations
Joda C. Wormhoudt, Aerodyne Research, Inc. (United States)
Paul L. Kebabian, Aerodyne Research, Inc. (United States)

Published in SPIE Proceedings Vol. 2138:
Longer Wavelength Lasers and Applications
Gabor Patonay, Editor(s)

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