The model of the micro-domains formation in photorefractive crystals near the illuminated area polarized due to the screening effects is developed. The micro-domain shape and physical properties are studied in the phenomenological Ginsburg-Landau-Devonshire theory framework with respect to the semiconductor properties of ferroelectric medium. The spontaneous electric induction distribution in the micro-domain is shown to depend on the surface charge distribution on the boundary between illuminated area and the other system. Owing to the surface density peculiarities the transversal microdomain size is revealed to be much smaller than longitudinal one. Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/07/2015 Terms of Use: http://spiedl.org/terms Proc. of SPIE Vol. 5257 257 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/07/2015 Terms of Use: http://spiedl.org/terms
Processes of phase hologram recording in binary photopolymeric media have been considered. These media are based on two monomers having different polymerization rates and forming polymers with different refractive indexes. The mechanism of inhomogeneous structures formation in such media includes two main processes: radical polymerization and diffusion mass transfer. The general equations system has been theoretically investigated, which describes the dynamics of inhomogeneous photopolymerization in complex polymeric compositions.
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