Share Email Print

Optical Engineering

High-speed laser speckle photography. Part 2: rotating mirror camera control system and applications
Author(s): Jonathan Mark Huntley; John E. Field
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

A rotating mirror camera and pulsed ruby laser have been combined to record laser speckle photographs at framing rates in the range of 105 to 106 frames/s. 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-exposu re speckle photographs to be recorded on two separate runs of the camera. The photographs are analyzed by an automated image processing system to give whole-field displacement data with submicron accuracy. The illustrations show the dynamic displacement field in polymethyl methacrylate due to solid particle impact. The camera/laser system has potential applications for other stress analysis techniques, such as photoelasticity, the method of caustics, and moiré interferometry.

Paper Details

Date Published: 1 May 1994
PDF: 8 pages
Opt. Eng. 33(5) doi: 10.1117/12.168543
Published in: Optical Engineering Volume 33, Issue 5
Show Author Affiliations
Jonathan Mark Huntley, Univ. of Cambridge (United Kingdom)
John E. Field, Univ. of Cambridge (United Kingdom)

© SPIE. Terms of Use
Back to Top