Focusing properties of aperiodic zone plates

Walter D. Furlan; Juan A. Monsoriu; Genaro Saavedra

doi:10.1117/12.684602

29 August 2006 Focusing properties of aperiodic zone plates

Walter D. Furlan, Juan A. Monsoriu, Genaro Saavedra

Proceedings Volume 6317, Advances in X-Ray/EUV Optics, Components, and Applications; 63171B (2006) https://doi.org/10.1117/12.684602
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

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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