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Proceedings Paper

Wavefront divinding ring-interferometers for the far infrared
Author(s): K. D. Moeller
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Paper Abstract

The incoming wavefront is diffracted at the reflectors. One set of reflectors is displacedwith respect to the other and light from the two sets is interfering with light from the other set. Formonochromatic light, if the optical path difference between the two sets is such that we haveconstructive interference, all the light travels in the direction of reflection (zero order). If we havedestructive interference, the light is diffracted into the first and higher orders and travel into adirection making an angle with the direction of reflection, but light is traveling in the direction ofreflection. We can change the displacement between the two sets of reflectors at a sequence ofintervals such that we have alternating light falling on the detector and not. The recorded intensityis the interferogram.

Paper Details

Date Published: 30 August 1993
PDF: 2 pages
Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 210460 (30 August 1993); doi: 10.1117/12.2298648
Show Author Affiliations
K. D. Moeller, New Jersey Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2104:
18th International Conference on Infrared and Millimeter Waves
James R. Birch; Terence J. Parker, Editor(s)

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