摘要
根据全息理论,通过分析全息图光栅结构的极值频率,利用抽样定理以及频谱分离条件,分析了离轴菲涅耳全息的记录条件,得到了不同于以往文献的最小记录距离及参考光源设置表达式,并做了计算机模拟验证.结果表明:用该方法推得的离轴菲涅耳全息最小记录距离和参考光设置表达式是正确的.只有同时满足抽样条件和频谱分离条件,才能得到高质量的再现像.
By using holographic theory,hologram sampling theorem and separation condition of frequency spectrum,the maximum spatial frequency of off-axis Fresnel was analyzed,and recording conditions were studied.The expressions of the minimum recording distance and of the parameters of the reference wave were given, which were different from others. Both theoretic analysis and computer simulation show that these expressions gained from this article about off-axis Fresnel hologram are correct and rigorous,but others presented all literatures up to now are not right;only the conditions of sampling and separation are simultaneously met,high quality reconstructing image is gained.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2007年第4期645-649,共5页
Acta Photonica Sinica
基金
北京市留学人员科技活动择优项目资助
关键词
数字全息
记录条件
CCD
空间频率
抽样定理
菲涅耳全息
Digital holography
Recording Condition
CCD
Spatial frequency
Sampling theorem
Fresnel hologram
