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Perturbation perspective of partial coherence discussion on imperfect x-ray optical elements

DOI: 10.1117/12.2567207 DOI Help

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 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

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