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Noninterferometric quantitative phase imaging with soft x rays

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Abstract

We demonstrate quantitative noninterferometric x-ray phase–amplitude measurement. We present results from two experimental geometries. The first geometry uses x rays diverging from a point source to produce high-resolution holograms of submicrometer-sized objects. The measured phase of the projected image agrees with the geometrically determined phase to within ±7%. The second geometry uses a direct imaging microscope setup that allows the formation of a magnified image with a zone-plate lens. Here a direct measure of the object phase is made and agrees with that of the magnified object to better than ±10%. In both cases the accuracy of the phase is limited by the pixel resolution.

© 2000 Optical Society of America

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