Abstract

Real-time holographic interferometry performed with two very thin, parallel, closely spaced object illumination beams can be used to produce a time-varying irradiance which, when incident on a photodetector, gives a signal whose analysis indicates both the normal displacement and tilt at a point on the object surface. The signal also contains information about in-plane translation which can be utilized in some cases.

© 1983 Optical Society of America

Real-time holographic interferometry: a microcomputer system for the measurement of vector displacements

P. Hariharan, B. F. Oreb, and N. Brown
Appl. Opt. 22(6) 876-880 (1983)

Techniques of holographic displacement measurement: an experimental comparison

R. J. Pryputniewicz and W. W. Bowley
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Real-time vibration measurement by a spatial phase-shifting technique with a tilted holographic interferogram

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Strain measurement by heterodyne holographic interferometry

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Computer-aided speckle pattern interferometry

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