AN INTERFEROMETRIC MODULATOR FOR USE AS A PRE-MONOCHROMATOR IN THE FAR INFRARED$^{\ast}$
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Date
1962
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
A variable depth lamellar grating interferometer similar to the one described by Genzel and $Weber^{1}$ has been constructed at The Ohio State University. It can be used, with periodic variation of the grating depth, either as an order separator for a far infrared grating spectrometer, or as a direct-reading spectrometer by itself. This interferometric modulator designed primarily to serve as a pre-monochromator, will be described. Expressions for the instrumental line shape will be given, for the error-free case and for some cases in which certain errors are assumed to be present. Calculated and observed instrumental line shapes will be compared. The effect of errors on the modulator's performance will be discussed, especially with reference to its efficiency as a filter.
Description
$^{\ast}$ Supported in part through a grant from the National Science Foundation and a contract between The Ohio State University Research Foundation and Air Force Cambridge Research Laboratories. $^{1}$ Genzel L. and Weber R. Anger Z. Physik 10, 127 (1957), 10, 195 (1957).
Author Institution: Laboratory of Molecular Spectroscopy and Infrared Studies, The Ohio State University
Author Institution: Laboratory of Molecular Spectroscopy and Infrared Studies, The Ohio State University