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Proceedings Paper

Long Wavelength Infrared Heterodyne Detection
Author(s): E. R. Washwell; S. K. Ichiki
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Paper Abstract

The detection of molecular line radiation is of interest in a variety of applications such as atmospheric pollution monitoring, investigation of astronomical sources, and basic spectroscopic studies. In the following discussion, the heterodyne detection of molecular line radiation is shown to have significant advantages over direct detection at longer infrared wavelengths. The development of a heterodyne receiver operating in the long wavelength infrared region using tunable semiconductor laser local oscillators is described. The techniques used to operate the receiver at selectable descrete wavelengths are applicable to the entire spectral range covered by semiconductor lasers. Results are presented for the heterodyne receiver operating in the 24-μm spectral region.

Paper Details

Date Published: 15 November 1976
PDF: 7 pages
Proc. SPIE 0095, Modern Utilization of Infrared Technology II, (15 November 1976); doi: 10.1117/12.955157
Show Author Affiliations
E. R. Washwell, Lockheed Missile and Space Company, Inc. (United States)
S. K. Ichiki, Lockheed Missile and Space Company, Inc. (United States)


Published in SPIE Proceedings Vol. 0095:
Modern Utilization of Infrared Technology II
Irving J. Spiro, Editor(s)

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