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