| Photopolymer holographic recording material has been becoming a hot promising technology because of its many attractive features, such as: high sensitivity, high resolution, high diffraction efficiency, high signal-noise ratio, and completely dry real-time processing and so on. On the base of the review of the process of high-density optical information storage technology, the holographic storage principle and characteristics of photopolymer, the study has been done about photopolymer recording materials in this dissertation as follows:1. A novel safranine T sensitized photopolymer material based on polyvinyl-alcohol for binder is prepared. And this material is sensitive to green-yellow light. The photopolymerizable system is consisted of acrylamide and N, N'-methylenebisacrylamide as mixed monomers, triethanolmine as photo-initiator. The holographic characteristics of the photopolymer are studied and a reasonable optimal concentration of the photopolymer is obtained.2. The holographic characteristics under different circumstances are studied respectively. And the experimental preparation proceed of the material are advanced.3. Photo-induced reaction processes in the photopolymer for holographic storage are studied. And the different process holograms are scanned by SEM (Scanning Electron Microscope). The experimental results are compared with analysis of the theory and they are fit each other well.4. Some holographic characteristics of the photopolymers with two or more photo-sensitizers are compared with the material which is studied in the dissertation. 5. Two dimensional analog images and digital data pages modulated by the SLM (Spatial Light Modulator) are stored in the material, and the reconstructed images or data pages have good fidelity. Many images are stored in the same location of the dry photopolymer film by multi-wavelength or sparse-wavelength angle-multiplexing storage technology, and the high fidelity holograms are got, too.
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