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.

© 1963 Optical Society of America

Infrared Spectral Emittance Measurements of Optical Materials

D. L. Stierwalt
Appl. Opt. 5(12) 1911-1915 (1966)

The Reflection and Transmission of Infrared Materials: I, Spectra from 2 50 Microns

Donald E. McCarthy
Appl. Opt. 2(6) 591-595 (1963)

The Effect of Extraneous Radiation on Photometric Accuracy of Infrared Spectrophotometers

James E. Stewart
Appl. Opt. 2(11) 1141-1146 (1963)

Modification of a Beckman Spectrophotometer for Direct Measurements of Spectral Energy Distribution of Light Sources

F. Grum
Appl. Opt. 2(3) 237-242 (1963)

Photometric Accuracy of Infrared Spectrophotometers

James E. Stewart
Appl. Opt. 2(12) 1303-1307 (1963)