Holographic Interferometry

Ralph F. wuerker

doi:10.1117/12.978156

1 August 1972 Holographic Interferometry

Ralph F. wuerker

Proceedings Volume 0029, Imaging Techniques for Testing and Inspection; (1972) https://doi.org/10.1117/12.978156
Event: Imaging Techniques for Testing and Inspection, 1972, Los Angeles, United States

Abstract

Holographic interferometry has been the most immediate, significant application of laser holography. For the first time, optical interferometric measurements can be made on non-optical surfaces; such as castings, pipes, panels, composites, etc., as well as through diffusely illuminated transparent scenes. Like classical interferometry, holographic interferometric measurements are sensitive to path changes down to one tenth of a wavelength of light (0.07 micron or 3 microinches). The technique has made available a completely new method of non-destructive testing: automobile tire testing, testing of adhesive bonds, pressure vessels, microwave antenna testing, the determination of resonant frequencies of mechanical structures, transient deformation of surfaces, and the study of aerodynamic phenomena.

Citation Download Citation

Ralph F. wuerker "Holographic Interferometry", Proc. SPIE 0029, Imaging Techniques for Testing and Inspection, (1 August 1972); https://doi.org/10.1117/12.978156

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