X-Ray Holographic Microscopy

Abstract

X-ray holograms of two- or three-dimensionally distributed objects are recorded and reconstructed. The in-line holograms of a line-like object of a chemical fiber and a point-like object of red blood cell are made using AlKα radiation (8.34Å) from a two-stage fine focus X-ray generator. A magnified real image is reconstructed from the negative hologram using a He–Ne laser (6328Å). A lateral resolution of about 4 µm and a longitudinal resolution of about 4 mm are obtained in the two-step imaging process.

On the possibility of utilizing holographic schemes in X-ray microscopy

“…The following values are the characteristic parameters of experimental schemes" zr-~75 cm, zj~30 cm, 21 =8.34/~, 22=0.63, M~m=253. The resolution achieved does not exceed a few microns (Aoki & Kikuta, 1974).…”

“…2(c) (Giles, 1969;Yokoseki & Suzuki, 1970;Aoki & Kikuta, 1974 Fraunhofer's axial holography scheme yields a lower maximum resolution than the schemes considered above, but it is more convenient. The following values are the characteristic parameters of experimental schemes" zr-~75 cm, zj~30 cm, 21 =8.34/~, 22=0.63, M~m=253.…”

X-ray holography

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Development of Scanning-Type X-ray Fourier Transform Holography

“…Among these imaging techniques, x-ray Fourier transform holography (XFTH) [3,4] provides simple and unambiguous image reconstruction. Recently, the technique has been successfully demonstrated on magnetic materials [5] and biological samples [6] using an integrated mask-sample style where the holography mask is made of the illumination window and the small reference hole, and the imaging object is fabricated as a unit.…”