Extension of Holography to X-Ray Region

Abstract

An in-line X-ray hologram is made by using Alkα (8.34Å) or CKα (44.8Å) radiation to test their fitness for recording X-ray hologram. The result shows that AlKα is superior to CKα in its coherence and recording time. The X-ray source size is estimated to be several microns by Young's experiment. The effect of source size on X-ray holograms is demonstrated by the reconstructed real image of a fiber or a fine mesh. It is shown that a semitransparent object of a chemical fiber works as a lens for the AlKα line. A preliminary experiment of lensless Fourier-transform hologram is given.