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The current state‐of‐the‐art of photorefractive and photoactive polymers for holographic applications is summarized and reviewed. Photorefractive polymers and some kinds of photoactive materials based on the azobenzene chromophore have great potential for updatable holographic applications. Updatable three‐dimensional holographic displays of large size have been developed using photorefractive polymers as well as photoactive azobenzene materials. Time responses of photorefractive polymers of the order of seconds and hundreds of milliseconds are currently improved to be of the order of milliseconds to hundreds of microseconds with high diffraction efficiency and high optical gain.
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Naoto Tsutsumi (2016) studied this question.
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