Sharp-focusing Bragg-Fresnel zone plate with Laue diffraction geometry

Abstract

The impact of decreased zone height on the focal properties of hard X-ray Bragg-Fresnel zone plates has been studied by numerical simulation. Decreased zone height allows for smaller zone widths and, although the efficiency of the lens is decreased, the signal-to-background ratio in the focal plane of the lens remains at a comparatively high level. This is distinct from an analogous case of ordinary phase zone plates. © 2006 International Union of Crystallography Printed in Great Britain - all rights reserved.