title: Noninterferometric quantitative phase imaging with soft x rays.
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.
authors.affiliation: School of Physics, University of Melbourne, Victoria, Australia. bea@tauon.ph.unimelb.edu.au
authors.forename: B E
authors.initials: BE
authors.lastname: Allman
authors.forename: P J
authors.initials: PJ
authors.lastname: McMahon
authors.forename: J B
authors.initials: JB
authors.lastname: Tiller
authors.forename: K A
authors.initials: KA
authors.lastname: Nugent
authors.forename: D
authors.initials: D
authors.lastname: Paganin
authors.forename: A
authors.initials: A
authors.lastname: Barty