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Proceedings Paper

Calorimetry At 10.6 µm For Large Aperture Beams (Up To 2 M) And High Powers (Up To 20 Tw)
Author(s): Jon E. Sollid; Christopher W. Bjork; Stephen J. Levings; Valerie R. Adams
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Paper Abstract

Three kinds of calorimeters, differing in their absorption mechanisms, will be described. Included are surface absorbing calorimeters constructed of beryllium oxide, volume absorbing calorimeters of kapton and copper laminate, and box calorimeters of various shapes constructed of electroformed copper enclosures blackened by the commercial Ebanol* process. In all cases, devices are constructed so that the dominant heat loss mechanism is radiation. That is, they are carefully insulated from their environment. In some cases, drift produced by the background is subtracted by using the twin technique. The heat capacities of the calorimeters are known and the temperature rise is sensed using thermopiles. This gives the energy absorbed. Each device is also calibrated in such a way that it is traceable to the NBS Laser Measurements Standards.

Paper Details

Date Published: 7 November 1983
PDF: 6 pages
Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); doi: 10.1117/12.934779
Show Author Affiliations
Jon E. Sollid, University of California (United States)
Christopher W. Bjork, University of California (United States)
Stephen J. Levings, University of California (United States)
Valerie R. Adams, University of California (United States)


Published in SPIE Proceedings Vol. 0380:
Los Alamos Conf on Optics '83
Robert S. McDowell; Susanne C. Stotlar, Editor(s)

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