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Proceedings Paper

Novel approaches to automated reduction of phase-shifted interferograms
Author(s): Vance A. Deason; Gordon D. Lassahn
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Paper Abstract

In an effort to reduce the hardware requirements for phase shifting interferometry, we have developed two approaches to estimating the amount of individual phase shift between interferograms. This is intended to make possible phase shifting interferometry with unknown and varying phase shifts. This will reduce the cost of phase shifters by eliminating the need for precision calibrated devices. The first method of estimating the phase shift involves beam shuttering and requires a special hardware modification of the interferometer, while the second is a purely software implementation. Both methods are relatively inexpensive to install and use.

Paper Details

Date Published: 1 January 1992
PDF: 14 pages
Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); doi: 10.1117/12.135340
Show Author Affiliations
Vance A. Deason, EG&G Idaho, Inc. (United States)
Gordon D. Lassahn, EG&G Idaho, Inc. (United States)


Published in SPIE Proceedings Vol. 1553:
Laser Interferometry IV: Computer-Aided Interferometry
Ryszard J. Pryputniewicz, Editor(s)

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