22 April 1996 Optical applications of photorefractive azo dye-doped PMMA films
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Azo-dye doped polymer (ADP) systems have shown to be remarkable photosensitive media for holographic recording and optical computing. The totally reversible trans-cis photoionization mechanism induced by actinic light allows the real-time recording of phase holograms on the doped polymer matrices. These ADP systems can also be used to perform polarization holography as they present the Weigert effect. Real-time operations such as contrast reversal, optical demultiplexing, addition and subtraction of two overlapping cross-polarized signals have been performed successfully.
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Vinh Phuc Pham, Vinh Phuc Pham, Roger A. Lessard, Roger A. Lessard, Gurusamy Manivannan, Gurusamy Manivannan, "Optical applications of photorefractive azo dye-doped PMMA films", Proc. SPIE 2688, Holographic Materials II, (22 April 1996); doi: 10.1117/12.238533; https://doi.org/10.1117/12.238533

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