摘要
本文分析了光折变晶体多重全息存储中扇形效应对光栅写入时间常数的影响和写入光耦合对光栅振幅的影响，给出了两种因素影响下角度编码多重全息存储中时间递减曝光法的计算公式和方法，该计算公式和通常的有所不同。数值计算结果表明，按照这种计算方法所得多重存储中各幅全息光栅振幅不仅均匀性好，而且振幅也相对较大，这种曝光方法有利于提高晶体的存储容量。
The influence of scattering effects on recording time constant has been analyzed in holographic storage in photorefractive crystal and so does the influence of light beam couple on grating amplitude.The formula and method to calculate the exposure time for multiplexed storage with the incremental recording technique have been presented.The calculated results have shown that the uniform and great grating can be obtained using the formula and method,accurate exposure time is one of the key to increase amount of storage.
出处
《激光杂志》
CAS
CSCD
北大核心
1999年第3期23-26,共4页
Laser Journal
