合成孔径非相干数字全息的成像特性  

Imaging Characteristics of Synthetic Aperture Incoherent Digital Holography

作　　者：弓巧侠[1] 汪盼 白云鹤 臧瑞环 杜艳丽[1] 宋冲 马凤英[1] Gong Qiaoxia;Wang Pan;Bai Yunhe;Zang Ruihuan;Du Yanli;Song Chong;Ma Fengying(School of Physical Engineering,Zhengzhou University,Zhengzhou,Henan 450001,China)

机构地区：[1]郑州大学物理工程学院,河南郑州450001

出　　处：《激光与光电子学进展》2018年第8期187-195,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11504333);河南省高等学校重点科研项目(16A140035);河南省高校科技创新团队和创新人才支持计划(18IRTSTHN016)

摘　　要：基于菲涅耳非相干数字全息记录和再现的基本理论,对合成孔径非相干数字全息成像过程进行理论分析和计算;模拟仿真空间光调制器上加载透镜的方式对合成孔径非相干数字全息成像特性的影响,并对模拟结果进行分析;比较相位子全息图先拼接再重建、先重建再拼接2种再现方法对再现像质量的影响,并对仿真结果进行实验验证。结果表明:中心孔径是最重要的子孔径,采用中心孔径加4个十字型子孔径的成像性能较好,或者采用双透镜对称加载模式,可以减少合成孔径的子孔径数,缩短全息记录时间;证明了合成孔径技术在非相干数字全息中的适用性。Based on the recording and reconstruction theory of Fresnel incoherent digital holography,we analyze and calculate the imaging process of the synthetic aperture incoherent digital holography.The effect of mounting the double lens symmetry mode on a spatial light modulator on imaging characteristics of synthetic aperture incoherent digital holography is simulated,and the simulation results are analyzed.We compare two representation methods including different phase sub-holograms which are first spliced and reconstructed or first reconstructed and spliced.The simulation results are verified by experiments.The results show that the central aperture is the most important sub-aperture.The central aperture and four cross-bonding sub-apertures has better imaging performance,or the double lens symmetry mode can greatly reduce the number of sub-apertures and the holographic recording time.The applicability of synthetic aperture technique in incoherent digital holography is verified.

关 键 词：全息 非相干数字全息 合成孔径 分辨率 空间光调制器 

分 类 号：O438.1[机械工程—光学工程]