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High resolution atmospheric spectroscopy using a diode laser heterodyne spectrometerUltrahigh resolution (0.007 per cm) atmospheric solar absorption spectra that have been obtained from a tunable infrared heterodyne radiometer are discussed. The radiometer was developed for ground based observations in the 8-12 micron region, and tunability is achieved through the use of Pb-salt semiconductor laser local oscillators. Spectra have been obtained in a piecewise fashion from 9.1 to 11.1 microns using laser emission modes that exhibit characteristics suitable for local-oscillator operation. Spectra showing absorption features of HNO3, O3, CO2, and H2O are presented along with comparisons of experimental and synthetic spectra calculated using a line-by-line atmospheric transmission model.
Document ID
19820045386
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hoell, J. M., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Harward, C. N.
(Old Dominion University Norfolk, VA, United States)
Lo, W.
(GM Research Laboratories Warren, MI, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1982
Publication Information
Publication: Optical Engineering
Volume: 21
Subject Category
Instrumentation And Photography
Accession Number
82A28921
Distribution Limits
Public
Copyright
Other

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