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7 November 1983 Calorimetry At 10.6 µm For Large Aperture Beams (Up To 2 M) And High Powers (Up To 20 Tw)
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Proceedings Volume 0380, Los Alamos Conf on Optics '83; (1983)
Event: Los Alamos Conference on Optics, 1983, New Mexico, United States
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.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jon E. Sollid, Christopher W. Bjork, Stephen J. Levings, and Valerie R. Adams "Calorimetry At 10.6 µm For Large Aperture Beams (Up To 2 M) And High Powers (Up To 20 Tw)", Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983);

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