摘要
本文提出了一种新型散斑全息存储技术，它是在体全息存储参考光路中加入一随机相位板并通过其移位导致被参考光照明的位置发生变化，利用在存储介质上产生的动态散斑实现多重全息存储。基于动态散斑互相关和衍射理论导出了相应的理论模型，给出了参考光散斑尺寸对反映存储密度的复用选择性影响的计算分析和实验结果，从而表明该技术可方便地用于提高系统的存储密度.
In this paper,a novel speckle holographic storage sc heme is proposed,which a random phase diffuser is path and is shifted to change the section of diffuser illuminated by the refere added in the reference optical nce beam.Multiple holograms are recorded in the same position of the recording m edium by use of the dynamic speckle generated.A theoretical model has been deri v ed to describe the storage properties of this scheme based on the cross correla tion of dynamic speck le and the diffractive theory.The influence of the speckle size on the multiplexing selectivity determined the storae density has been d isc ussed analytically and experimentally.The results indicate that this scheme allo ws an increase in the data storage density conveniently.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2001年第9期1124-1127,共4页
Acta Photonica Sinica
基金
国家高技术863基金(863-2-5-1.5)
国家重大基础研究规划973(G19990330)资助项目
关键词
全息存储
动态散斑
存储密度
复用技术
Holographic storage
Dynamic speckle
High-density
Multiplexing
