PARAMETERS FOR HIGH-RESOLUTION ELECTRON HOLOGRAPHY

Theoretically, the idea of electron holography is straightforward: the electron image wave is recorded in a hologram and reconstructed by su bsequent processing according to the laws of wave optics. However, in particular at high resolution, the experimental realization is restric ted, e.g. by the limited coherence, i.e. the brightness of electron be ams, pixel number available with today's image-processing systems. By careful consideration of the role of the parameters during taking and reconstructing a high-resolution hologram, nevertheless, a resolution limit of 0.1 nm seems to come within reach with available technology.