电子全息高分辨率三维数值重现

High Resolution 3-D Numerical Reconstruction of Electron Holograph

对电子全息图进行计算机三维数值重现时 ,由于样品各层电子衍射的干扰 ,影响了纵向分辨率的提高。本文提出一种基于多能量电子全息图数值重现像叠加原理的新方法 ,可以提高电子全息数值重现纵向分辨率 ,从而实现真正的三维数值重现的含义。还通过计算机模拟研究的手段对该原理和方法的有效性进行了验证 。

A new method has been successfully developed to improve the axial resolution of electron holography,based on superposition of multi energy electron holography.The new method effectively solves the problem of the axial resolution reduction caused by electron diffraction from different layers of a sample in 3 D numerical reconstruction.We have tested the method with computer simulation and obtained some results of technological interest.