Calibration and use of a cesium-iodide prism in the infrared

Mills, I., Scherer, J. R., Crawford, Jr., B. and Youngquist, M. (1955) Calibration and use of a cesium-iodide prism in the infrared. Journal of the Optical Society of America, 45 (10). pp. 785-786. ISSN 0030-3941 doi: 10.1364/JOSA.45.000785

Abstract/Summary

With a cesium-iodide prism the long wavelength range of an infrared spectrometer may be extended to 55µ The use of such a prism, the choice of optical system, and the problems of stray radiation are all discussed. Accurate data are assembled for calibration in this region, and sample calibration traces are shown. A simple gas absorption cell is described for use at long wavelengths.