全息图像实验的噪声及衍射效率

The Noise and Diffraction Efficiency of the Hologram Experiment

全面地讨论全息噪声产生的各种来源和抑制办法。在拍摄全息时 ,一般总希望提高衍射效率 ,但应依据拍摄对象来源来选择参物比 ,以求得总的衍射效率和整体效果最佳。在考虑到外部环境的影响时 ,拍摄时间不宜过长。在一定的条件下 ,为了获得最佳的效果 ,存在着一个最佳曝光时间的问题。在电镜观察下 ,记录材料的分辨率不够时 ,干涉条纹的信息将破坏。

This paper fully discusses the various sources of the holographic noise and control methods. When taking holograms, we usually always hope to improve the diffraction efficiency and select the reference objects according to the objective of photograph to get the best total diffraction efficiency and effect. Considering the influence of the external environment, the photographing time should not be too long. Under a certain condition, in order to obtain the best effect, there exists a problem of the best exposure time. Under the observation of the electron mirror, when the resolution of recording materials is not enough, the information of interference fringe will be damaged.