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Proceedings Paper

Frequency modulation spectroscopy for chemical sensing of the environment
Author(s): David E. Cooper; Haris Riris; Jan E. Van der Laan
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Paper Abstract

Frequency modulations spectroscopy (FMS) with infrared lasers is an attractive technique for a number of environmental chemical sensing problems. The technique combines high detection sensitivity with high detection speed and, when implemented with tunable infrared laser sources, is capable of detecting numerous chemical species in the atmosphere. To date, the technique has been demonstrated with semiconductor diode lasers and carbon dioxide lasers, and absorptions at the 10-7 level have been detected. We will review the principles and status of FMS for chemical sensing and discuss applications in atmospheric and environmental monitoring.

Paper Details

Date Published: 1 May 1991
PDF: 8 pages
Proc. SPIE 1433, Measurement of Atmospheric Gases, (1 May 1991); doi: 10.1117/12.46158
Show Author Affiliations
David E. Cooper, SRI International (United States)
Haris Riris, SRI International (United States)
Jan E. Van der Laan, SRI International (United States)

Published in SPIE Proceedings Vol. 1433:
Measurement of Atmospheric Gases
Harold I. Schiff, Editor(s)

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