Practical system for time-resolved holographic interferometry

An easily implemented and easily manageable system for time-resolved holographic interferometry is presented. The system consists of a multiple-pulsed Q-switched ruby laser and a rotating disk having radial slits with a constant angular separation. The disk is used to scan the reference beam along a...

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Bibliographic Details
Published in:Optical Engineering 1991-07, Vol.30 (7), p.1017-1022
Main Authors: Carlsson, Torgny E, Nilsson, Bjorn O, Gustafsson, Jonny, Abramson, Nils H
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Holography
Optics
Physics
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Summary:An easily implemented and easily manageable system for time-resolved holographic interferometry is presented. The system consists of a multiple-pulsed Q-switched ruby laser and a rotating disk having radial slits with a constant angular separation. The disk is used to scan the reference beam along a holographic plate, thereby achieving spatial multiplexing. Since the influence on the beam is negligible and a single slit is illuminated by every laser pulse, there is no need for synchronization. The interferometric pattern is achieved by removing the disk and exposing a reference image on the holographic plate. The system may serve as an excellent tool for full-field dynamic measurements. A simple experiment has beem performed showing a sequence of momentary interference patterns on a vibrating plate.
ISSN:0091-3286
1560-2303
1560-2303
DOI:10.1117/12.55878