天青Ⅰ敏化的红敏光致聚合物全息存储特性  

Holographic Characteristics of Red-Sensitive Photopolymer Sensitized by Azure Ⅰ

作　　者：成建群[1] 陈珂[1] 黄明举[1] 

机构地区：[1]河南大学物理与电子学院,光学与光电子技术研究所,河南开封475004

出　　处：《中国激光》2009年第5期1150-1155,共6页Chinese Journal of Lasers

基　　金：河南大学自然科学基金重点项目(06ZDZR002)资助课题

摘　　要：为寻找一种新型的红敏光致聚合物,用干法处理制备了一种天青Ⅰ敏化的光敏聚合物材料,并研究了它的全息存储特性。用He-Ne激光器632.8 nm波长的光对材料进行曝光,通过实验装置测量和相应的公式计算,得到材料的透过率、衍射效率、感光灵敏度以及折射率调制度,发现该材料最大衍射效率达到了66%,材料的最佳厚度为140μm,最大透过率接近80%,最大感光灵敏度为1.5×10-3cm2/mJ,最大折射率调制度为9.7×10-4,将模拟图像存入样品,得到的透射图像与衍射再现图像保真度较高,所有这些结果表明该光敏聚合物适合用于高密度全息存储。In order to find a novel red-sensitive photopolymer, a photopolymer material sensitized by azure Ⅰ as a dye is fabricated by dry processing, and its holographic storage characteristics are investigated. It is illuminated under the incident wavelength of 632.8 nm of He-Ne laser. Through the measurement of experiment and the computation of corresponding formulas, the holographic parameters of material, such as transmittance, diffraction efficiency, exposure sensitivity, and refractive index modulation, are gained, It is discovered that the maximum diffraction efficiency reaches 66 %, the best thickness is 140 μm, the maximum transmittance approaches 80%, the maximum exposure sensitivity is 1.5 × 10^-3 cm^2/mJ, and the maximum refractive index modulation is 9.7× 10^-1. The analog image is stored in the material and the transmittance and reconstructed holograms have good fidelity. All of the results demonstrate that the material is appropriate for high-density holographic storage.

关 键 词：全息存储 天青Ⅰ 红敏光致聚合物 透过率 衍射效率 

分 类 号：O438.1[机械工程—光学工程]