Measurement of the Infrared Spectral Absorptance of Optical Materials
- 1 November 1963
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 2 (11) , 1169-1173
- https://doi.org/10.1364/ao.2.001169
Abstract
The spectral absorptances of some solids have been measured in the 2- to 25-μ region in the temperature range 313 to 473°K by use of a modified Beckman IR-3 spectrophotometer. The emission of each sample is compared directly to a blackbody at the same temperature. Results indicate that this technique offers a most useful tool, particularly for measuring absorption coefficients of low value.Keywords
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