Stroboscopic Interferometry

David G. Kocher

doi:10.1117/12.956517

8 August 1978 Stroboscopic Interferometry

David G. Kocher

Proceedings Volume 0141, Adaptive Optical Components I; (1978) https://doi.org/10.1117/12.956517
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States

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.

Citation Download Citation

David G. Kocher "Stroboscopic Interferometry", Proc. SPIE 0141, Adaptive Optical Components I, (8 August 1978); https://doi.org/10.1117/12.956517

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