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Proceedings Paper

Far-infrared wavefront dividing interferometry using nonperiodic diffraction pattern
Author(s): Karl Dieter Moeller
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Paper Abstract

A new type of wavefront dividing reflection interferometer for the far infrared is discussed. The interferometer uses two sets of interpenetrating rings, one fixed and the other movable for the production of an interferogram. The advantage of this interferometer compared to the lamellar grating is higher modulation of shorter wavelengths. This modulation advantage is also applicable to transmission-reflection beamsplitters in a Mach-Zehnder interferometer. A two mirror wavefront dividing interferometer may be constructed so small that it fits in the deqar of a He-cooled detector. Using this interferometer, asymmetric Fourier transform spectroscopy may be conducted, yielding simultaneously the optical constants n and k with a sample and a reference interferogram.

Paper Details

Date Published: 13 October 1995
PDF: 13 pages
Proc. SPIE 2558, Millimeter and Submillimeter Waves II, (13 October 1995); doi: 10.1117/12.224224
Show Author Affiliations
Karl Dieter Moeller, New Jersey Institute of Technology (United States)


Published in SPIE Proceedings Vol. 2558:
Millimeter and Submillimeter Waves II
Mohammed N. Afsar, Editor(s)

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