Abstract

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.

© 1955 Optical Society of America

Infrared Measurements with a Cesium Iodide Prism

Nicolo Acquista and Earle K. Plyler
J. Opt. Soc. Am. 43(11) 977-979 (1953)

Optical Properties of Cesium Iodide*

William S. Rodney
J. Opt. Soc. Am. 45(11) 987-992 (1955)

Recording Vacuum Infrared Prism-Grating Spectrometer*

K. P. Yates and R. F. Buhl
J. Opt. Soc. Am. 45(3) 192-201 (1955)

The Calibration of Infrared Prism Spectrometers

A. R. Downie, M. C. Magoon, Thomasine Purcell, and Bryce Crawford
J. Opt. Soc. Am. 43(11) 941-951 (1953)

Infrared Spectrometry with a Cesium Iodide Prism

Earle K. Plyler and Nicolo Acquista
J. Opt. Soc. Am. 43(3) 212_1-212 (1953)