TiO_2纳米粒子掺杂的有机双化学反应体系光致聚合物全息存储材料

TiO_2 Nanoparticle Doped Organic Two-chemistry System Photopolymer Materials For Holographic Storage

制备了一种TiO2纳米粒子掺杂的有机双化学反应体系光致聚合物全息存储材料,并对其全息特性进行了研究。实验表明,该无机/有机光聚物材料薄膜厚度为240um时,掺杂的TiO2纳米粒子与单体的浓度比为5∶95时,获得了84%的高衍射效率,7.9×10-4的折射率调制度、6.5cm2/J的感光灵敏度和低至0.12%的缩皱率。并且使用此材料进行了多幅全息图的角度复用拍摄,图像清晰,信噪比与保真度较好。我们认为该无机/有机光聚物材料具有较好的全息存储性能,适合在高密度全息存储领域应用。

Holographic storage material with TiO2 nanoparticle doped organic two-chemistry system photopolymer was prepared,and the characteristics were studied. The maximum diffrac- tion efficiency of 84% , the sensitivity of 6.5cm2/J, the maximum refractive index modulation of 7.9 × 10^-4 , and volume shrinkage of 0. 12% were obtained when film thickness was controlled at 240μm and doping ratio at 5.95. Many holograms in angle multiplexing were recorded with the material, and the images can be reconstructed clearly, Contrast and fidelity were very ideal. We believe that our photopolymer is a promising candidate holographic recording medium for high- density optical data storage in future.