双染料敏化的光致聚合物全息特性研究

报道了一种新型、双染料共同敏化的光致聚合物材料,该材料以丙稀酰胺和双丙稀酰胺作为单体,聚乙烯醇为聚合物基质,两种染料曙红Y和亚甲基蓝作为光引发剂.实验结果表明,该材料在四种波长的激光照射下,其最大衍射效率均不低于25%,最大可达54.8%.通过采用多波长存储技术,分别利用四种不同波长的光在该聚合物膜上同一位置存储了四幅不同的图像,取得一定的效果.

The holographic storage characteristic of a new kind of photopolymer co-sensitized by two dyes is studied.The photopolymer is composed of acrylamide and methylenebisacrylamide as monomers, polyvinylalcohol as the polymeric matrix, Eosin Y and Methylene as mixture photoinitiators. Diffraction efficiencis of the photopolymer at four wavelengths are no less than 25% and 54.8% in maximum. Four different images are stored in the same dot of the photopolymer film by the multi-wavelength holographic storage method, and these images can be reconstructed clearly.