远场法重现近场同轴全息图

Far Field Reconstruction of Near Field In-line Hologram

采用近场方式记录的同轴全息图重现时受孪生像的影响比较严重；采用远场方式记录的同轴全息图重现时几乎不受孪生像的影响．为了提高成像分辨率，人们采用近场方式记录软Ｘ射线同轴全息图．本文利用计算机实现近场全息图的远场法重现．模拟实验证实了方法的可行性．

The reconstruction of near field in-line hologram is distorted seriously by the twin-image, However, the reconstruction of far field in-line hologram is much out of the distortion. In order to improve the resolution, near field hologram recording method is used in the soft X-ray in-line holography. In this paper? we use far field reconstruction method to eliminate the twin-image. Simulation results prove it practical.