| Photopolymers are characterized by high diffraction efficiency, high sensitivity, high spatial frequency response and completely dry real-time processing that perhaps have the potential to cover almost all the long list of requirements of holographic storage. However, the shortcomings of common photopolymer materials such as exposure shrinkage and limited refractive index modulation affect the reading and writing properties of their holographic storage. For improving the holographic characteristics of the material, TiO2-nanoperticals dispersed polyvinyl alcohol/acrylamide (PVA/AA) binder-based holographic recording photopolymers are fabricated. The study about photopolymer recording materials in this dissertation includes:1. TiO2-nanoperticals dispersed photopolymer sensitized by Methylene Blue and Eosin Y is fabricated.2. Through analyzing the curve of transmittance, the homogeneity of such photopolymer film is studied.3. The influence of TiO2-nanoperticles concentration and TiO2-nanoperticle size on the diffraction efficiency and the refractive index modulation of the material are studied.4. The influence of TiO2-nanoperticles concentration and TiO2-nanoperticle size on the Bragg mismatch and the shrinkage of the material are analyzed.5. The influence of TiO2-nanoperticles concentration and TiO2-nanoperticles size on the scattering loss of the material are studied.6. The influence of TiO2-nanoperticles concentration and TiO2-nanoperticles size on the sensitivity and dynamic range are analyzed.7. Two dimensional analog images and digital data pages are stored in the material, and the reconstructed images or data have good fidelity.
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