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Proceedings Paper

Design of a 24-in. phase shifting interferometer
Author(s): Chiayu Ai; Robert E. Knowlden; Joseph A. Lamb
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Paper Abstract

WYKO Corporation is designing and building 24' (61 cm) aperture phase shifting interferometers to aid in the manufacture and qualification of optics for the NIF (U.S. National Ignition Facility). The first interferometer is scheduled for delivery in early 1997. The 24' systems will be the largest commercially available phase shifting interferometers, and will use a megapixel CCD camera to give high lateral resolution. Some of the NIF optics will be tested at Brewster's angle, and that condition places unusual design requirements on the interferometer. The main effect of testing a planar optical element in transmission at Brewster's angle is that there is a large separation between areas of the element and the return flat, so that optical propagation effects become important. We describe our design of a large aperture phase shifting interferometer, and how it will be used to test the NIF optics.

Paper Details

Date Published: 20 November 1996
PDF: 8 pages
Proc. SPIE 2870, Third International Workshop on Laser Beam and Optics Characterization, (20 November 1996); doi: 10.1117/12.259945
Show Author Affiliations
Chiayu Ai, WYKO Corp. (United States)
Robert E. Knowlden, WYKO Corp. (United States)
Joseph A. Lamb, WYKO Corp. (United States)

Published in SPIE Proceedings Vol. 2870:
Third International Workshop on Laser Beam and Optics Characterization
Michel Morin; Adolf Giesen, Editor(s)

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