| 李德阳,杜艳丽,张文斌,马凤英,弓巧侠,郭茂田.非相干同轴数字全息成像系统研究[J].光电子激光,2015,26(6):1157~1161 |
| 非相干同轴数字全息成像系统研究 |
| Study of incoherent on-axis digital holography imaging system |
| 投稿时间：2015-01-24 |
| DOI： |
| 中文关键词: 全息 非相干全息 广义相移数字全息 迈克尔逊干涉仪 |
| 英文关键词:holography incoherent holography generalized phase-shifting digi tal holography Michelson interferometer |
| 基金项目:国家自然科学基金(61307019)、河南省科技厅(142300410225)和河南省高等学校重点科研 项目(15A140038)资助项目 (郑州大学 物理工程学院,河南 郑州 450001) |
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| 中文摘要: |
| 非相干全息术可以利用非相干光源获得物体的全 息图。利用迈克尔逊干涉仪搭建了非相干同轴数字 全息成像系统,利用菲涅尔衍射理论分析系统的点扩散函数(PSF),使用CCD 记录全息图并在计算机中进行数值 重建,研究广义相移数字全息干涉术在非相干同轴数字全息成像系统中的应用。结果表 明,基于迈克 尔逊干涉仪的非相干同轴数字全息成像系统可以实现白光光源照明下物体全息图的快速记录 ,三步广义相 移数字全息干涉术应用于系统,能够克服使用移相器的非相干同轴数字全息术对系统稳定 性要求较高的 缺点,可以去除孪生像和零级像,获得清晰的数值重建像。本文系统的横向放大率为1.6倍 时,分辨率可达45lp/mm。 |
| 英文摘要: |
| Incoherent holography can record digital holograms under incoherent il lumination.This paper builds an incoherent on-axis digital holography imaging system based on Michelson interfe rometer,analyzes the system′s point spread function according to the Fresnel diffraction theory,and uses a CCD to r ecord holograms,and the results of numerical reconstruction are given on the computer.The generalized phase-shift ing interferometry is introduced to the incoherent on-axis digital holography imaging system.The experimental resu lts show that the incoherent on-axis digital holography imaging system based on Michelson interferometer can record d igital holograms under incoherent illumination rapidly.The three、step generalized phase-shifting interferometry can be successfully combined with the incoherent on-axis digital holography imaging system.Compared with the incohere nt on-axis digital holography imaging system which uses a phase shifter,this system does not require so hi gh stability.A clear reconstruction focusing at different planes is obtained with no conjugate image or zero-order image.The resolution of the system can reach 45lp/mm when the lateral magnification of the system is 1. 6. |
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