High-speed laser speckle photography

Jonathan Mark Huntley; John E. Field

doi:10.1117/12.49525

1 December 1991 High-speed laser speckle photography

Jonathan Mark Huntley, John E. Field

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.49525
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

Citation Download Citation

Jonathan Mark Huntley and John E. Field "High-speed laser speckle photography", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.49525

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