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Coherent Diffractive Imaging with Diffractive Optics
ISSN
0031-9007
1079-7114
Date Issued
2022
Author(s)
DOI
10.1103/PhysRevLett.128.223901
Abstract
We present a novel approach to x-ray microscopy based on a multilayer zone plate which is positioned
behind a sample similar to an objective lens. However, unlike transmission x-ray microscopy, we do not
content ourselves with a sharp intensity image; instead, we incorporate the multilayer zone plate transfer
function directly in an iterative phase retrieval scheme to exploit the large diffraction angles of the small
layers. The presence of multiple diffraction orders, which is conventionally a nuisance, now comes as an
advantage for the reconstruction and photon efficiency. In a first experiment, we achieve sub-10-nm
resolution and a quantitative phase contrast.
behind a sample similar to an objective lens. However, unlike transmission x-ray microscopy, we do not
content ourselves with a sharp intensity image; instead, we incorporate the multilayer zone plate transfer
function directly in an iterative phase retrieval scheme to exploit the large diffraction angles of the small
layers. The presence of multiple diffraction orders, which is conventionally a nuisance, now comes as an
advantage for the reconstruction and photon efficiency. In a first experiment, we achieve sub-10-nm
resolution and a quantitative phase contrast.
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