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Dynamic Polarization Holography: Methods and Applications

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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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Keywords: DYNAMIC POLARIZATION HOLOGRAPHY; DYNAMIC POLARIZATION-HOLOGRAPHIC GRATINGS; RELAXING POLARIZATION-SENSITIVE MATERIALS

Document Type: Research Article

Publication date: April 1, 2009

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  • The growing interest and activity in the fields of holography and speckle require a forum for rapid dissemination of important results. Journal of Holography and Speckle (JOHAS) is that international forum which offers scientists and engineers timely, peer-reviewed research in these fields. Journal of Holography and Speckle publishes original rapid communications, full research papers and timely state-of-the-art reviews (with author's biography and photo) encompassing the fundamental and applied research in all areas of holography, and speckle.
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