一种抗湿性光聚物在不同厚度下的全息特性  

Holographic characteristic parameters of a water-resistant photopolymer in different thickness

作　　者：孙彩霞[1] 王素莲[1] 李若平[1] 路海[1] 唐道广[1] 黄明举[1] 

机构地区：[1]河南大学光学与光电技术研究所,开封475001

出　　处：《激光技术》2008年第5期545-547,550,共4页Laser Technology

摘　　要：为了得到一种抗湿性光致聚合物在不同厚度下的全息特性,采用在介质中记录透射光栅等和理论分析的方法,取得了样品全息特性参量衍射效率、感光灵敏度、折射率调制度、动态范围在不同厚度下的数据。结果表明,随着厚度的增加,衍射效率出现了先增大而后减小的趋势;感光灵敏度和折射率调制度持续减小;动态范围呈先增大而后减小然后再增大的趋势。通过对不同厚度下各全息特性参量的对比发现,此种光致聚合物存在最佳厚度。The holographic characteristic parameters of the material such as the diffraction efficiency, the exposure sensitivity, the refractive index modulation and the dynamic range with different thickness were studied. As the thickness of the photopolymer increases, the diffraction efficiency increases at first and then decreases ; the exposure sensitivity and the refractive index modulation decreases continuously ; the dynamic range decreases at first and then increases. And the trends of these changes are simply analyzed in theory. From the contract of the holographic characteristic parameters in different thickness, it can be seen that this photopolymer has an optimal thickness.

关 键 词：全息 光致聚合物 衍射效率 感光灵敏度 折射率调制度 动态范围 

分 类 号：O438.1[机械工程—光学工程]