双色俘精酸酐薄膜的双波长图像光存储

Dual-Wavelength Optical Image Storage with Bicolor Fulgides Film

采用两种光致变色俘精酸酐体系化合物[1,2,4 三甲基 5 苯基 3 吡咯甲叉(异丙叉)俘精酸酐和对 N,N 二甲基苯基 2 甲基 3 恶唑甲叉(异丙叉)俘精酸酐]制备了单层双色聚甲基丙烯酸甲酯(PMMA)复合薄膜感光记录材料。采用双波长(650 nm和488 nm)图像存储和读出光路,实现了用两种波长在双色复合薄膜的同一位置同时记录两幅图像。当分别用各自对应的波长读出时,两幅图像各自获得了高衬比度,且二者之间的串扰很小,证明了在双色光致变色俘精酸酐材料上进行双波长复用图像光存储的可行性。

Two types of photochromic fulgide compounds [(1,2,4-trimethyl-5-phenyl)-3-pyrryl-ethylidene (isopropylidene) fulgide and (p-N, N-dimethylphenyl-2-methyl)-3-oxazoleyl-ethylidene (isopropylidene) fulgide] were used to prepare single layer bicolor PMMA composite film. The experiment demonstrated that two different images could be recorded on the bicolor composite film at the same area by using two different wavelengths (650 nm and 488 nm) respectively. When using the corresponding wavelength 650 nm or 488 nm to readout the two stored images on the film, each wavelength can obtain a high contrast ratio image and the two images with little crosstalk. This experiment confirmed that it was feasible to store and readout two images at the same area of the bicolor photochromic fulgide material.