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Proceedings Paper

Quantum cascade laser intracavity absorption sensor
Author(s): Andrei Muraviev; Doug Maukonen; Chris Fredricksen; Gautam Medhi; Robert E. Peale
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Paper Abstract

A mid-infrared intracavity laser absorption spectrometer based on an external cavity multi-mode quantum cascade laser is combined with a scanning Fabry-Perot interferometer is used as tunable narrow band transmission filter to analyze the laser emission spectrum. Sensitivity as a trace gas detector at 8.1 micron wavelengths has been demonstrated based on a weak water vapor line at an absorption coefficient of 1 x 10-5 cm-1. For molecules of reasonably strong absorption cross section (10-17 cm2), this corresponds to a detection limit of 40 ppb.

Paper Details

Date Published: 29 May 2013
PDF: 6 pages
Proc. SPIE 8710, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV, 87100N (29 May 2013); doi: 10.1117/12.2018193
Show Author Affiliations
Andrei Muraviev, Univ. of Central Florida (United States)
Doug Maukonen, Univ. of Central Florida (United States)
Chris Fredricksen, Univ. of Central Florida (United States)
Gautam Medhi, Univ. of Central Florida (United States)
Robert E. Peale, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 8710:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV
Augustus Way Fountain, Editor(s)

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