重铬酸盐明胶体积反射全息图片的研制

The Study of Volume Reflection Hologram of Dichromate Gelatin

指出了由于重铬酸盐明胶对光有吸收，要得到高的衍射效率，宁可适当控制Ｃｒ６＋离子的掺杂浓度．而增加明胶涂层的厚度．为此，说明了在干版制作工艺上应当注意的事项．在拍摄时应注意光路的设计，以获得较大的观察视角．及如何选择拍摄参数以获得较高的衍射效率．提出在记录材料不是很厚时，传统的三波混频理论应当修正．并以此观点来解释了一些再现时出现的现象．

Owing to the absorption of dichromate gelatin to light wave. We would rather control the Cr6+doping density and add the thickness of gelatin to obtain highdiffraction efficiency. For this reason, this paper presented some attentive aspects tomake the plates. In this paper, we also gived some discussions about how to design thelight road to obtain large viewing angle and how to choose taking parameters to obtainhigh diffraction efficiency. If the thickness of recording materials isn't enough, we makethe correction for tradition three-wave mixed frequency theory and explain somephenomena arised in the reconstructed image.