吲哚俘精酸酐实现三值偏振全息光学存储器

Ternary Polarization Hologram Memory Realized by Indolylfulgide/PMMA Film

针对三值光计算机需要直接存储线偏振光束的问题,利用光致各向异性材料吲哚俘精酸酐对偏振态敏感的特性,提出了一种基于吲哚俘精酸酐/PMMA薄膜的三值偏振全息数字存储方法,并建立了相应的光学存储器模型。该存储器系统采用He-Ne激光器为记录和读出光源,以双层液晶和偏振器为核心的编码器作为三值数据的输入部件,以双CCD为核心的解码器作为数据输出器件,采用傅里叶变换全息记录的方法,在吲哚俘精酸酐/PMMA薄膜上实现三值数字光学存储。该存储器系统可望实现直接并行存储用光束的正交线偏振态和无光态表示的三值数字信息,以及以页面为单位的并行寻址和读写操作。

A novel method for ternary polarization-hologram storage was presented, and the model of ternary optical memory based on the photoinduced anisotropy of indolylfulgide/PMMA film was constructed to store 3-state line-polarized beam for ternary optical computer. Using He-Ne laser as recording and readout beam and coder/decoder of ternary optical computer as data input/output element, ternary digital optical signal was recorded on indolylfulgide/PMMA film by Fourier transform holographic method. The memory can store directly ternary information denoted by cross-polarized and non-light states, and may realize page addressing and parallel read-write. The experiment result of one-bit ternary polarization-hologram digital storage with indolylfulgide demonstrates the method is feasible.