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![[Figure 1]](tol5017fig1mag.jpg)
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Figure 1
Illustration of beam path and WG optics for holographic imaging at the GINIX instrument. (a) Schematic of the beam path, starting with the 5 m undulator, the Si(111) monochromator and slit system. In the focus of the KB system, the WG is aligned for illumination of the object on the sample tower at defocus distance x01. The magnified hologram is recorded at distance x02 behind the WG with detectors mounted on the detector bench. (b) Photo of the WG stage, oriented against the beam. (c) FD simulation of front-coupling the KB (left) into the WG, propagation in the WG core (center), and WG exit field (right) for a (Si/air) WGb with d = 50 nm, L = 1 mm, at E = 8 keV. Comparing pre-focus of the KB (left) to WG exit (right), the increase in NA can be clearly noted. (d) SEM image of a WGb exit plane with superimposed reconstructed near-field intensity. This probe forms the quasi-point source for holographic imaging. Scale bar: 50 nm. (e) FD simulations of modal propagation in the WG, showing intensity in linear (top) and logarithmic (center) color scale, as well as phase (bottom) in a cyclic color scheme. |
![[Figure 1]](tol5017fig1.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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