光致聚合物材料中各组分对光聚合速度的影响及其在全息存储中的应用实验

本文研究了光敏剂、光引发剂、光促进剂、单体及高分子成膜树脂等成份对全息光致聚合物薄膜光存储性能的影响.在一定范围内,材料中光引发剂浓度的提高使光聚合速度显著增加,链转移剂浓度则存在一个最佳的相对浓度.适当地增加液态辅助单体含量及其所含双键官能团的数目,会明显增加光聚合速度.在聚醋酸乙烯酯薄膜中单体聚合速度明显优于在醋酸纤维素中的速度,所制备的光致聚合物材料实现了同一位置的多幅全息图像的存储和再现,表明了该材料有用于大容量全息存储的可能.

THE CONTENT EFFECTS OF THE COMPONENTS ON THE PHOTOPOLYMERIZATION RATE OF HOLOGRAPHIC DATA STORAGE MATERIAL AND ITS RECORDING EXPERIMENTS

In this paper, the relationship between the concentration of photosensitizing dye, initiator, chaintransfer agent, monomer, property of the binder polymers and the photosensitivity of holographic recording films are discussed.In a certain range, the rate of polymerization was increased with increasing the content of initiator, while optimized concentration of chaintransfer agent was found.Adding properly value of liquid monomer and the number of polymerized functional groups, the rate of polymerization was greatly increased.The monomers polymerized more rapidly in the polyvinyl acetate than in cellulose acetate film.High SNR holograms were obtained with this photopolymer by angularly multiplexing method.Thus, this photopolymer was suggested to be used in high density volume holographic recording.