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Proceedings Paper

Real-time holography of high-speed events using DuPont's OmniDex photopolymer
Author(s): David T. Sheerin; Nicholas J. Phillips
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Paper Abstract

A single beam Denisyuk reflecting holographic arrangement has been constructed using a front lit retroreflecting element and employing DuPont's OmniDexTM photopolymer as the holographic recording film (HRF). The light from an advanced (extended coherence) argon ion laser operating at 514 nm is allowed to pass through the substrate/photopolymer onto the surface of the reflector and reflect back to the photopolymer, the HRF thus acting as an intelligent beamsplitter. Because of the self-limiting, self-developing nature of the HRF, the hologram is processed quickly in situ without the need for wet processing and the space between the retroreflector and photopolymer is thus rendered interferometrically active with high intrinsic accuracy. Results will be given of how this simple arrangement can give high contrast fringes due to phase changes in air caused by the passage of high speed projectiles. A high speed CCD framing camera has provided the means of capturing sequential images of events with exposure time down to a few nanoseconds. The interferometer plays a dual role acting as an interferometer or as a schlieren system.

Paper Details

Date Published: 25 March 1996
PDF: 15 pages
Proc. SPIE 2652, Practical Holography X, (25 March 1996); doi: 10.1117/12.236058
Show Author Affiliations
David T. Sheerin, De Montfort Univ. (United Kingdom)
Nicholas J. Phillips, De Montfort Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 2652:
Practical Holography X
Stephen A. Benton, Editor(s)

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