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Figure 7
Resolution of an imaging system with a combined CRL objective and a square aperture in the back focal plane. Shown are results from geometrical optics, [\sigma_{\rm{tot}}], and from FrFT simulations, [\sigma_{\rm{FrFT}}], as a function of aperture size. In the intermediate region where the two components contribute equally to the resolution, geometrical optics fails at predicting the resolution. Simulation details: 2D wavefront, 1000 × 1000 pixels, 10 nm pixel size, PSF widths extracted from Gaussian fitting to vertical line profiles through the optical axis; see also `Example_Figure_7.m' of Pedersen (2017BB3).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 25| Part 3| May 2018| Pages 717-728
https://doi.org/10.1107/S1600577518003028
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