Munro, P;
(2019)
Rigorous multi-slice wave optical simulation of x-ray propagation in inhomogeneous space.
Journal of the Optical Society of America A
, 36
(7)
pp. 1197-1208.
10.1364/JOSAA.36.001197.
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Abstract
The simulation of the propagation of divergent beams using Fourier-based angular spectrum techniques can pose challenges for ensuring correct sampling in the spatial and reciprocal domains. This challenge can be compounded by the presence of diffracting objects, as is often the case. Here, I give details of a method for robustly simulating the propagation of beams with divergent wavefronts in a coordinate system where the wavefronts become planar. I also show how diffracting objects can be simulated, while guaranteeing that correct sampling is maintained. These two advances allow for numerically efficient and accurate simulations of divergent beams propagating through diffracting structures using the multi-slice approximation. The sampling requirements and numerical implementation are discussed in detail, and I have made the computer code freely available.
| Type: | Article |
|---|---|
| Title: | Rigorous multi-slice wave optical simulation of x-ray propagation in inhomogeneous space |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/JOSAA.36.001197 |
| Publisher version: | https://doi.org/10.1364/JOSAA.36.001197 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10076557 |
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