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Proceedings Paper

Stroboscopic Interferometry
Author(s): David G. Kocher
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Paper Abstract

By pulsing the illumination in an optical testing interferometer, the techniques of stroboscopy may be applied to interferometric testing. Stroboscopic interferometry can be used to visualize, in slow motion, the optical fringe motion in repetively excited test objects. Because the fringes are observed in slow motion, small dynamic fringe deformations (less than one fringe) become apparent even when they are not readily discerned as a reduction in fringe contrast in a time-averaged interferogram. An application of the technique is described in which the surface motions resulting from high order solid body resonances in an active optical mirror were made visible and recorded on a video tape.

Paper Details

Date Published: 8 August 1978
PDF: 4 pages
Proc. SPIE 0141, Adaptive Optical Components I, (8 August 1978); doi: 10.1117/12.956517
Show Author Affiliations
David G. Kocher, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0141:
Adaptive Optical Components I
Sandor Holly; Lawrence James, Editor(s)

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