Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
62 (1993), S. 2167-2169
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report the photorefraction in polymeric materials such as a polyvinylcarbazole doped with nonlinear optical dye and a copolymer of a NLO dye-pendant monomer and a monomer with carbazolyl group. In the latter polymer, diffraction efficiency was on 10−6 order, the change of the refractive index was reversible and its decay was accelerated by photoirradiation. The observed photorefraction was mainly due to the molar refraction change of carbazolyl groups caused by photoinduced ionization, and this is evidence that trapped ion radicals exist in the polymer forming grating, which is necessary for the real photorefractives.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.109457
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