The analysis of off-axis digital holographic recording conditions
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摘要: 用振幅全息和菲涅耳衍射理论,分析离轴数字全息记录系统结构参数对数字全息再现的影响,并进行相应的实验验证。理论分析和实验研究结果都表明,如果记录物体和CCD的尺寸固定,记录物体和CCD之间的记录距离将直接影响数字全息再现像的分离状况和系统的分辨率,在保证再现像分离的前提下,缩短物体和CCD之间的距离将有利于数字全息再现像分辨率的提高。Abstract: By utilizing the theories of Fresnel diffraction and amplitude holography,the effects of configuration parameters on the numerical reconstruction of off-axis digital holographic recording system are analyzed and the corresponding experiment is operated.The results of theoretical analysis and experiment show: if the sizes of recorded object and CCD are fixed,the distance between the recorded object and CCD has a direct impact on the resolution of the system and the separation of the three images in reconstruction plane.If the premise of separation status of the reconstructed images is satisfied,shortening the distance between the object and CCD redounds to improving the resolution of reconstructed image.
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Keywords:
- off-axis digital holography /
- recording distance /
- Fresnel holography /
- resolution
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[1] GOODMAN J W,LAWRENCE R W.Digital image formulationfrom electronically detected hologram[J].A P L,1967,11(3): 77～79.[2] ADAMA M,KREIS T,JUPTNER W.Partical size and positionmeasurement with digital holography[J].Proc SPIE,1997,3098:234～240.[3] YAMAGUCH I,ZHANG T. Phase-shifting digital holography[J].Opt Lett,1997,22(16):1268～1270.[4] MARQUARDT E,RICHER J.Digital image holography[J].Opt Engng,1998,37(5):1514～1519.[5] CUCHE E,BEVILACACQUA F,DEPEURSING C.Digital holo-graphy for quantitative phase contrast imaging[J].Appl Opt,1999,38:6994～7001.[6] CUCHE E,MARQUET P,DEPEURSING C.Spatial filtering forzero-order and twin-image elimination in digital off-axis holography[J].Appl Opt,2000,39(23):4070～4075.[7] XU L,MIAO J M,ASUNDL A.Properties of digital holography based on in-line configuration[J].Opt Engng,2000,39(12):3214～3219.[8] 于美文,张静方.光全息术[M].北京:北京教育出版社,1995.63～65.[9] le CLERC F,GROSS M,COLLO L.Synthetic aperture experimentin the visible with on-axis digital heterodyne holography[J].Opt Lett,2001,26:1550～1552.
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