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Proceedings Paper

Temperature stabilization requirements for unchopped thermal detectors
Author(s): Marc C. Foote
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Paper Abstract

The temperature stabilization requirements of unchopped thermistor bolometers and thermopile detectors are analyzed. The detector temperature, on which the bolometer output signal depends, is quite sensitive to changes in instrument temperature but relatively insensitive to changes in scene temperature. In contrast, the difference in temperature between detector and substrate, on which the thermopile signal depends, is equally sensitive to changes in instrument and scene temperature. Expressions for these dependencies are derived based on a simplified instrument model. It is shown that for a typical uncooled thermal imager, the temperature stabilization requirements for a bolometer are tow orders of magnitude more stringent than those for a thermopile detector.

Paper Details

Date Published: 26 July 1999
PDF: 7 pages
Proc. SPIE 3698, Infrared Technology and Applications XXV, (26 July 1999); doi: 10.1117/12.354536
Show Author Affiliations
Marc C. Foote, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 3698:
Infrared Technology and Applications XXV
Bjorn F. Andresen; Marija Strojnik, Editor(s)

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