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Proceedings Paper

High-speed laser speckle photography
Author(s): Jonathan Mark Huntley; John E. Field
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Paper Abstract

A rotating mirror camera and pulsed ruby laser have been combined to record laser speckle photographs at framing rates in the range 105 - 106 frames s"1. The laser is repetitively Q-switched by means of a Pockels cell, which is controlled by photodetectors inside the camera. This allows well-correlated double exposure speckle photographs to be recorded on two separate runs of the camera. The photographs are analysed by an automated image processing system to give whole-field displacement data with submicron accuracy. The paper is illustrated with results showing the dynamic displacement field in polymethyl methacrylate due to solid particle impact.

Paper Details

Date Published: 1 December 1991
Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.49525
Show Author Affiliations
Jonathan Mark Huntley, Univ. of Cambridge (United Kingdom)
John E. Field, Univ. of Cambridge (United Kingdom)

Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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