新型双染料敏化的宽带光聚物全息特性研究

Study of Holographic Character of a Novel Photopolymer

报道了一种新型、两种染料共同敏化的宽带响应光聚物材料.该材料使用孟加拉玫瑰红和亚甲基蓝作为联合光敏剂,由于混合染料的加入,使材料的感光光谱范围大大加宽.用四种波长的光对样品进行曝光,衍射效率均大于40%,最高可达80%,适合于多波长存储,分别用不同波长的激光在样品同一位置存储了四幅不同的图像,其再现图像效果良好,表明该材料是一种较理想的多波长全息存储材料.

A novel wide band sensitive holographic recording materials co-sensitized by two dyes is presented. The sensitive spectrum of the polymer is dramatically extended from 50 nm to 200 nm. The maximum diffrcation efficiencies are more than 40% and up to 80% in different exposure wavelengths. Four different images are stored in the same location of the photopolymer film by the multi wavelength holographic storage method, and these images can be reconstructed with high quality. It is said that this material is suitable for multi-wavelength holographic storage.