A Comparison of Near-Infrared Diode Laser Techniques for Airborne Hygrometry

High-frequency wavelength modulation spectroscopy and dual beam absorption noise canceler methods are compared for near-infrared laser detection of moisture at levels relevant to airborne hygrometry. Both techniques exhibit sensitivities exceeding -85 degrees C frost point, with subsecond time respo...

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Bibliographic Details
Published in:Journal of atmospheric and oceanic technology 1998-02, Vol.15 (1), p.29-35
Main Authors: Silver, Joel A, Hovde, David Christian
Format: Article
Language:English
Online Access:Get full text
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Summary:High-frequency wavelength modulation spectroscopy and dual beam absorption noise canceler methods are compared for near-infrared laser detection of moisture at levels relevant to airborne hygrometry. Both techniques exhibit sensitivities exceeding -85 degrees C frost point, with subsecond time response. The application of these techniques to airborne hygrometric instrumentation is discussed.
ISSN:0739-0572
1520-0426
DOI:10.1175/1520-0426(1998)015<0029:ACONID>2.0.CO;2