@inproceedings{f2dbcd7f3238445db3d60b2b66f3cabb,
title = "Theoretical and experimental studies of photorefractivity in novel polymeric composites",
abstract = "We present results of temperature dependence studies of photorefractive effect in a polymeric composite PVK:TCP:C 60:DEANST. At elevated temperature, decreased rigidity of the host matrix leading to increased orientational mobility of the second-order nonlinear chromophores results in enhanced photorefractive performance. Diffraction efficiency approaching 100\% and enhanced two-beam coupling gain coefficients are reported. The influence of temperature on the speed of photorefractive response is measured and discussed. We also report on a novel photorefractive polymeric composite. A new chromophore, 4-[N-(2- hydroxyethyl)-N-(methyl)amino phenyl]-4'-(6-hydroxyhexyl sulfonyl)stilbene, abbreviated as APSS, possessing high transparency over a broad wavelength, is used together with a PVK:TCP:C 60 matrix. This composite shows high photorefractive figures of merit at 488, 514.5 and 632.8 nm. Diffraction efficiencies up to 40\%, as well as net two-beam coupling gains of 60 cm -1 have been achieved at these wavelengths.",
author = "Bogdan Swedek and Prasad, \{Paras N.\} and Yiping Cui and Ning Cheng and Zieba, \{Jaroslaw W.\} and Jeffrey Winiarz and Kim, \{Kie Soo\}",
year = "1996",
language = "English",
isbn = "081942238X",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
pages = "89--99",
editor = "Stephen Ducharme and Stasiak, \{James W.\}",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",
note = "Organic Photorefractive Materials and Xerographic Photoreceptors ; Conference date: 07-08-1996 Through 08-08-1996",
}