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Wavelet Denoising for Infrared Laser Spectroscopy and Gas Detection

Volume 66, Number 6 (June 2012) Page 700-710

IRÈNE MAPPE-FOGAING,* LILIAN JOLY, GEORGES DURRY, NICOLAS DUMELIÉ, THOMAS DECARPENTERIE, JULIEN COUSIN, BERTRAND PARVITTE, and VIRGINIE ZÉNINARI


After a brief introduction to wavelet theory, this paper discusses the critical parameters to be considered in wavelet denoising for infrared laser spectroscopy. In particular, it is shown that measurement dispersion as well as sensibility can be dramatically improved when using wavelet denoising for gas detection by infrared laser absorption spectroscopy.



Index Headings: Wavelets; Trace gas; Diode laser; Infrared absorption spectroscopy.