偶氮苯侧链液晶聚合物薄膜中图象存储的光学控制  

OPTICALLY-CONTROLLED IMAGE STORAGE IN AZOBENZENE LIQUID-CRYSTALLINE POLYMER FILMS

作　　者：夏锦红[1] 

机构地区：[1]平原大学建筑工程系,新乡453003

出　　处：《光子学报》1999年第10期933-936,共4页Acta Photonica Sinica

摘　　要：基于偶氯苯聚合物液晶的光控双折射实现了图象存储的光学控制，所用聚合物液晶薄膜具有大的光致双折射和长久光学存储特性．利用光控分子取向进行图象存储，存储的图象从介于两正交偏振片间的样品薄膜读出．实验清楚地表明通过改变照射光的偏振方向或旋转样品可很容易地控制输出图象的亮度和取向．Image storage based on photo-induced alignment in azobenzene liquid-crystalline polymerfilms is reported. Measurements reveal that the polymer film p0ssesses photo-induced birefringence ofIarge magnitude and the characteristic of long-term optical storage. The photo-induced alignmentprocess is used for storing image. The stored image is read from the film placed between two crossedpoIarizers. It is demonstrated clearly that the alignment of the azo chromophores as well as the storedimage can be easily controlled by choosing the appropriate polarization of the irradiating light or byrotating the film.

关 键 词：光控分子取向 偶氮苯 侧链液晶 薄膜 图象存储 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]