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Perturbation perspective of partial coherence discussion on imperfect x-ray optical elements
DOI:
10.1117/12.2567207
Authors:
Lingfei
Hu
(Diamond Light Source)
,
John
Sutter
(Diamond Light Source)
,
Hongchang
Wang
(Diamond Light Source)
,
Kawal
Sawhney
(Diamond Light Source)
Co-authored by industrial partner:
No
Type:
Conference Paper
Conference:
SPIE Optical Engineering + Applications, 2020
Peer Reviewed:
No
State:
Published (Approved)
Published:
August 2020
Open Access
Abstract: The rapid development of new-generation synchrotron facilities with excellent coherence demands more accurate evaluation of beamline performance. A perturbation theory based on wave optics is proposed in this work to describe the effect of imperfections on the performance of x-ray optical elements. It shows that the perturbed performance of the non-ideal optical element could be derived from the perfect performance of the ideal optic through a convolution operation. The semi-analytical approach proposed here provides a new way to improve the simulation efficiency for imperfect optical elements. The finite aperture effect on diffraction-limited optics and focal shape distortion by surface height error are treated to show the application of the proposed method.
Journal Keywords: X-ray optics; wave optics; partial coherence; wavefront propagation; beamline design
Subject Areas:
Physics
Technical Areas:
Optics
Added On:
25/09/2020 09:09
Documents:
114930D.pdf