新型绿光敏感光致聚合物高密度全息存储特性

Study on the character of novel green light sensitive high density digital holographic photopolymer

用实验方法研究了一种新合成的绿光敏感光致聚合物的高密度全息存储性质 .结果表明该种光致聚合物具有较高的衍射效率、大的动态范围和折射率调制度 ,适合做高密度数字全息存储的记录材料 ,但材料的灵敏度需要提高 ,同时读出过程必须考虑曝光过程所导致的布拉格偏移 ;利用角度复用技术在样品的同一位置记录了 2 0个数字化数据信息页 ,存储密度达到 0 .1 2 5GB cm3 ,平均误码率达到 5 .1 5× 1

The high density digital holographic recording character of a novel green light sensitive photopolymer was studied. The results showed that the polymer has a high diffraction efficiency, large dynamic range and refractive index modulation. It is fit for high density holographic recording, but its exposure sensitivity needs to be improved, and the Bragg mismatch caused by the exposure must be considered during reading. Twenty digital data pages were recorded in the same position of the polymer by means of angular multiplexing method. The recording volume density reaches 0.125GB/cm 3, the average bit error rate reaches 5.15×10 -4 .