Abstract

An interferometric spectrometer of the Fabry-Perot type has been built for the infrared spectral region and its resolving power has been tested on the 10-μ band of NH₃. The interferometer has two sets of plates. One set of plates is closely spaced to isolate a free spectral range for the other set, which is more widely spaced to achieve the final resolution. Wavelength scanning is achieved by a synchronized mechanical separation of both sets of plates. The interferometer plates are figured rocksalt crystal plates coated with evaporated multilayers of tellurium and sodium chloride.

© 1957 Optical Society of America

Interferometric Frequency Calibration of Infrared Spectrometers

Svend Brodersen
J. Opt. Soc. Am. 46(4) 255-258 (1956)

Infrared Spectroscopy from 5 to 200 Microns with a Small Grating Spectrometer*

R. C. Lord and T. K. McCubbin
J. Opt. Soc. Am. 47(8) 689-697 (1957)

Experimental Study of the Slit Function of an Ebert Spectrometer in the Visible and Near-Infrared*

Peter C. von Planta
J. Opt. Soc. Am. 47(7) 629-631 (1957)

Infrared Grating Spectrophotometer

J. U. White, N. L. Alpert, A. G. Debell, and R. M. Chapman
J. Opt. Soc. Am. 47(5) 358-367 (1957)

Some Quantitative Measurements of Path Differences and Gradients by Means of Phase Contrast and New Interferometric Devices*

E. Ingelstam
J. Opt. Soc. Am. 47(6) 536-544 (1957)