Abstract

A method for taking electron holograms with a single crystal instead of an electron biprism is described. The method is so simple that only a single crystal needs to be placed on the specimen grid in the specimen holder. Then, the crystal lattice fringes are focused on the recording photographic film to form an off-axis Fresnel hologram. The procedures for both hologram formation and reconstruction are described. Experimental results show that holograms can also be achieved with a conventional transmission electron microscope having a low-coherence electron source.

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