一种利用象散改进的白光重现全息术

White-light reconstruction holography improved with astigmatism

K．Bazargan等在1980年提出利用控制第一个全息图重现象的象散量来使得第二个全息图的白光重现象成在全息图的后方的方法。

Drdinary image-plane holography requires the reconstructed image to straddle over the hologram, thus the image in front of the hologram causes visual confusion. This paper describes our experiments using non-paraxial astigmatism theory to make the white-light reconstructed image on the image-plane holography appear behind the hologram, thus avoiding visual confusion. All conditions for the experiments and the results are given in detail. Using this method, we have obtained a clear, bright, speckle-less white-light reconstructed stereoscopic image, located behind the hologram.