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Proceedings Paper

Dynamic performance and testing for holographic storage viability of orientationally enhanced photorefractive polymers
Author(s): Karl S. West; John Dimitri Shakos; Mark D. Rahn; Frances A. Wade; Richard D. Blackburn; David P. West; Terence A. King
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Paper Abstract

Photorefractive polymer materials were tested for speed and magnitude of response, using degenerate four wave mixing, Mach-Zehnder interferometry and transmission ellipsometry. Two polymer materials with an electro-optic dye of identical molecular mass were tested, one with a straight chain aliphatic group, the other with a branched chain. The orientational response tends to be hindered by an increase in the amount of branching of the electro-optic dye molecule, which reduces both the degree of poling that is due to the external field and the enhancement due to the internal space- charge field. Although the composites containing ODNPB show faster and greater photorefractive response, they exhibited more phase instability, with devices showing advanced crystallization after short periods. The EHDNPB composite offered slightly less photorefractive response at a reduced rate but offered crystallization free devices over many months even at high dye concentrations.

Paper Details

Date Published: 17 April 1998
PDF: 11 pages
Proc. SPIE 3281, Polymer Photonic Devices, (17 April 1998); doi: 10.1117/12.305431
Show Author Affiliations
Karl S. West, Univ. of Manchester (United Kingdom)
John Dimitri Shakos, Univ. of Manchester (United Kingdom)
Mark D. Rahn, Univ. of Manchester (United Kingdom)
Frances A. Wade, Univ. of Manchester (United Kingdom)
Richard D. Blackburn, Liverpool John Moores Univ. (United Kingdom)
David P. West, Univ. of Manchester (United Kingdom)
Terence A. King, Univ. of Manchester (United Kingdom)

Published in SPIE Proceedings Vol. 3281:
Polymer Photonic Devices
Bernard Kippelen; Donal D. C. Bradley, Editor(s)

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