Angular effects in digital off-axis holography  

作　　者：赖国俊 申功炘 Reinhard Geisler 

机构地区：[1]Institute of Fluid Mechanics, School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics [2]Institute of Aerodynamics and Flow Technology, German Aerospace Center

出　　处：《Chinese Optics Letters》2009年第12期1126-1130,共5页中国光学快报（英文版）

基　　金：supported by an AIRNET grant from Airbus, DLR’s Institute of Aerodynamics and Flow Tech-nology in Gttingen and the National Natural Science Foundation of China (No 10772017)

摘　　要：The relationship between the off-axis angle of the recording setup and the quality of reconstructed particle images in digital off-axis holography is studied. The interference patterns of the same particles in the same plane are recorded at different off-axis angles in horizontal and vertical directions. By means of numerical wave propagation, the particle images are reconstructed so as to evaluate and compare their quality by the numbers of particles picked out and by the signal-to-noise ratio （SNR）. The results provide useful information about the relationship between the off-axis angle and the quality of the reconstructed image.The relationship between the off-axis angle of the recording setup and the quality of reconstructed particle images in digital off-axis holography is studied. The interference patterns of the same particles in the same plane are recorded at different off-axis angles in horizontal and vertical directions. By means of numerical wave propagation, the particle images are reconstructed so as to evaluate and compare their quality by the numbers of particles picked out and by the signal-to-noise ratio （SNR）. The results provide useful information about the relationship between the off-axis angle and the quality of the reconstructed image.

关 键 词：HOLOGRAPHY 

分 类 号：O438.1[机械工程—光学工程]