含双引发剂的光致聚合物全息特性研究

制备了一种三乙醇胺与N-苯基苷氨酸为共同引发剂的丙烯酰胺基光致聚合物全息存储材料,并用He-Ne 激光器633 nm波长的光对样品进行曝光测试.实验表明,与单引发剂的光致聚合物相比,薄膜的质量有一定的提高,在曝光灵敏度变化不大的情况下,衍射效率有很大提高.优化两种引发剂浓度后,此种共同引发的光致聚合物材料呈现的衍射效率达到54%,曝光灵敏度为1.85×10－2cm2/mJ.还研究了此种光致聚合物的透过率随曝光时间和曝光强度的变化,说明此种光致聚合物材料内部均匀性好,对光的散射小.

Study of Holographic Characteristics of Photopolymer with Two Photo-initiator Systems

A acrylamide-based photopolymer,one kind of holographic storage material, which contains the photoinitiation triethanolamine and N-phenylglycine was prepared, and the sample was exposed by the He-Ne laser tuned wavelength 633 nm. The experimental results indicate that, compared with the photopolymer which contains the single photoinitiation,this photopolymeric sample which has two kinds of photoinitiation has good film quality, the diffraction efficiency is enhanced significantly. After optimized the concentration of two photoinitiations, the photopolymeric sample has higher diffraction efficiency about 54%, exposure sensitivity is 1.85×10－2cm2/mJ. Transmission efficiency varies as exposure time and exposure intensity. The photopolymeric material interior has uniformity well and less light scattering.