Dynamic Polarization Holography: Methods and Applications
The results of investigations of kinetics of photoanisotropy induction and relaxation in polarization-sensitive media with conformation-orientation mechanism of the anisotropy induction and having significant dark relaxation are presented. It is shown that such materials can be applied for tasks of dynamic polarization holography. With the purpose of improvement dynamic characteristics of polarization-sensitive materials azodye Nitrodimethyl red (NDMR) is specially synthesized. Materials on the basis of NDMR are used for recording dynamic polarization-holographic gratings with different profile of anisotropy. The results of the investigation of kinetics of diffraction efficiency (DE) of these gratings and the analysis of polarization state of diffracted orders are given. It is shown that the time of a cycle of recording/erasing for gratings of some types is of the order of 100 ms at DE = 21%. The theoretical model of dynamic polarization-holographic recording on such materials is presented. Possible applications of the methods of dynamic polarization holography are discussed.
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Document Type: Research Article
Publication date: April 1, 2009
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