Paper
29 August 2006 Focusing properties of aperiodic zone plates
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Abstract
Fresnel zone plates are conventional focusing and imaging elements used for X-ray and extreme ultraviolet radiation. The distribution of the transmissive and opaque circular rings in a Fresnel zone plate is periodic along the squared radial coordinate. In this communication we present a novel family of zone plates in which this periodicity is broken. These aperiodic zone plates present interesting focusing properties. We found two different kinds of designs. One of them produces a bifocal device with predictable separation between the foci. The other one produces a focal distribution along the optical axis with a fractal structure which is governed by the lacunarity of the zone plate. Different parameters allow a flexible design of both kinds of zone plates.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Walter D. Furlan, Juan A. Monsoriu, and Genaro Saavedra "Focusing properties of aperiodic zone plates", Proc. SPIE 6317, Advances in X-Ray/EUV Optics, Components, and Applications, 63171B (29 August 2006); https://doi.org/10.1117/12.684602
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KEYWORDS
Zone plates

Fractal analysis

X-rays

Binary data

X-ray imaging

Opacity

Solids

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