DOI:https://doi.org/10.1103/PhysRevA.91.029905
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©2015 American Physical Society
Illustration of the empty-beam correction for a nearly perfect quasipoint beam illumination provided by a x-ray waveguide (left column), compared to the strongly aberrated case which is deliberately achieved by insertion of a wavefront modifier consisting of W stripes inserted between the waveguide and the object (Siemens star test pattern). Panels (a), (b), and (c) and (d), (e), and (f) show the empty beam, the raw hologram, and the divided image (corrected hologram), respectively. Panel (c) is close to the ideal hologram calculated for ideal spherical or parallel beam (in the two equivalent geometries, as discussed in the text). One pixel corresponds to 25.5 nm in the object plane.
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