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Proceedings Paper

Time dependency of temperature of a laser-irradiated infrared target pixel as a low-pass filter
Author(s): Marija Scholl; James W. Scholl
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Paper Abstract

The thermal response of a surface layer of a pixel on an infrared target simulator is discussed. This pixel is maintained at a constant temperature by a rapidly scanning laser beam. An analytical model has been developed to describe the exact temperature dependence of a pixel as a function of time for different pixel refresh rates. The top layer of the pixel surface that generates the gray-body radiation shows the temperature dependence on time that is characteristic of a low-pass filter. The experimental results agree with the analytical predictions. The application of a pulsed laser beam to a noncontact, nondestructive diagnostic technique of surface characterization for the presence of microdefects is discussed.

Paper Details

Date Published: 1 November 1990
PDF: 9 pages
Proc. SPIE 1341, Infrared Technology XVI, (1 November 1990); doi: 10.1117/12.23116
Show Author Affiliations
Marija Scholl, Jet Propulsion Lab. (United States)
James W. Scholl, Alenka Associates (United States)

Published in SPIE Proceedings Vol. 1341:
Infrared Technology XVI
Irving J. Spiro, Editor(s)

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