低空间频率银盐明胶全息图的浮雕特性研究及其应用  

Studies of Relief Characteristics of Low Spatial Frequency Silver Halide Gelatin Holograms and Their Applications

作　　者：戴建明[1] 陈祯培[2] 陈怀新[2] 薛喜昌 

机构地区：[1]淮北煤炭师范学院物理系 [2]四川联合大学光电科学技术系

出　　处：《光电工程》1997年第6期44-49,共6页Opto-Electronic Engineering

摘　　要：通过实验研究表明，对低空间频率（＜１００ｌｐ／ｍｍ）的振幅型（吸收型）银盐全息图形表面已形成浮雕（实验中测得最大深度在１．５μｍ以上），经漂白，浮雕深度成倍加深；浮雕深度随空间频率而变化，并且可用不同曝光量进行调制。选择适当条件，可降低（甚至消除）零级光强，提高全息图的一级衍射效率。作为应用实例，本文给出了具有较高衍射效率和信噪比的计算全息图的实验结果。The experimental results show that the relief(maximal depth measured in experiment is over 1.5μm) has been formed on the low spatial frequency(<100 lp /mm ) amplitude type Silver Halide Gelatin Holograms(SHGH).After bleaching,the relief depth will be doubled.The relief depth varies with the spatial frequency and can be modulated with different exposures.The zero order light intensity can be reduced(even removed) and the first order diffraction efficiency can be improved through choosing the proper conditions.The experimental results of the computer generated holograms with higher diffraction efficiency and SNR are given as the practical examples.

关 键 词：浮雕 全息图 空间频率 感光乳剂 衍射效率 

分 类 号：TB877.1[一般工业技术—摄影技术] TQ575.1[化学工程—精细化工]