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本文实验研究了偶氮侧链聚合物液晶薄膜（P-CN）的光致双折射和光存储性质。在连续 532nm激光作用下,该液晶薄膜（P-CN）表现出显著的光致双折射（△n～10-2）。基于光致双折射效应,实验中获得了长久的、高对比度的光信息记录。
In this paper, the photodiffraction birefringence and optical storage properties of azo side-chain polymer liquid crystal thin films (P-CN) were experimentally studied. The liquid crystal film (P-CN) shows a significant photo-induced birefringence (△ n ~ 10-2) under continuous 532nm laser. Based on the photo-induced birefringence effect, a long-term, high-contrast optical information record was obtained.