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Proceedings Paper

Stitching interferometry: how and why it works
Author(s): Michael Bray
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Paper Abstract

Laser MegaJoule and other large optical systems require the metrology of large components. MegaJoule's tilted amplifying slabs, for example, have a diagonal size of approximately 800 millimeters, thus requiring a large interferometer. Large interferometers, 600 millimeters diameter and above, are expensive. This is due, in part, to the large collimator and reference plate required. These parts, being large and heavy, also generate mechanical stability problems. Stitching interferometry is a method by which large optical components are analyzed using a standard 'small' interferometer. This result is obtained by taking multiple overlapping images of the large component, and stitching these 'subapertures' together. Previous papers have dealt with the subject.

Paper Details

Date Published: 6 September 1999
PDF: 15 pages
Proc. SPIE 3739, Optical Fabrication and Testing, (6 September 1999); doi: 10.1117/12.360153
Show Author Affiliations
Michael Bray, CILAS (France)

Published in SPIE Proceedings Vol. 3739:
Optical Fabrication and Testing
Roland Geyl; Jonathan Maxwell, Editor(s)

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