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Proceedings Paper

Examination of the photoinitiation processes in photopolymer materials
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Paper Abstract

Photopolymer materials are practical materials for use as holographic recording media. In order to further develop such materials, a deeper understanding of the photochemical mechanisms present during the formation of holographic gratings in these materials has become ever more crucial. This is especially true of the photoinitiation process, which has already received much attention in the literature. Typically the absorption mechanism varies with exposure time. This has previously been investigated in association with several effects taking place during recording. Since holographic data storage requires multiple short exposures, it is necessary to verify the temporal change in photosensitizer concentration. Post exposure effects have also been discussed in the literature; however, they do not include post exposure effects such as the photosensitizer recovery. In this paper we report experimental results and theoretical analysis to examine the effects of the recovery and bleaching mechanisms which arise during exposure.

Paper Details

Date Published: 25 April 2008
PDF: 12 pages
Proc. SPIE 6994, Photon Management III, 69940O (25 April 2008); doi: 10.1117/12.781649
Show Author Affiliations
Shui Liu, Univ. College Dublin (Ireland)
Michael R. Gleeson, Univ. College Dublin (Ireland)
Sean O'Duill, Univ. College Dublin (Ireland)
John T. Sheridan, Univ. College Dublin (Ireland)

Published in SPIE Proceedings Vol. 6994:
Photon Management III
John T. Sheridan; Frank Wyrowski, Editor(s)

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