17 April 1998 Dynamic performance and testing for holographic storage viability of orientationally enhanced photorefractive polymers
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Karl S. West, Karl S. West, John Dimitri Shakos, John Dimitri Shakos, Mark D. Rahn, Mark D. Rahn, Frances A. Wade, Frances A. Wade, Richard D. Blackburn, Richard D. Blackburn, David P. West, David P. West, Terence A. King, Terence A. King, } "Dynamic performance and testing for holographic storage viability of orientationally enhanced photorefractive polymers", Proc. SPIE 3281, Polymer Photonic Devices, (17 April 1998); doi: 10.1117/12.305431; https://doi.org/10.1117/12.305431
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