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Proceedings Paper

Some Recent Advances In Speckle Techniques For Photomechanics And Optical Metrology*
Author(s): F. P. Chiang
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Paper Abstract

Major advances in using coherent and incoherent speckle patterns for displacement and strain measurements are reviewed. Topics include the laws of spatial movement of laser speckle, the halo functions of coherent and incoherent speckle patterns, the factors that result in speckle decorrelation which, in turn, affects the fringe visibility and sets the upper limit of displacement measurement, the new techniques of holospeckle interferometry, real-time and electron microscope speckle photographies and finally the automatic processing of Young's fringes, and digital correlation techniques.

Paper Details

Date Published: 25 November 1986
PDF: 13 pages
Proc. SPIE 0661, Optical Testing and Metrology, (25 November 1986); doi: 10.1117/12.938621
Show Author Affiliations
F. P. Chiang, State University of New York at Stony Brook (United States)


Published in SPIE Proceedings Vol. 0661:
Optical Testing and Metrology
Chander Prakash Grover, Editor(s)

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