White-light imaging with fractal zone plates

We report the achievement of the first images to our knowledge obtained with a fractal zone plates (FraZPs). FraZPs are diffractive lenses characterized by the fractal structure of their foci. This property predicts an improved performance of FraZPs as image forming devices with an extended depth of...

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Bibliographic Details
Published in:	Optics letters Vol. 32; no. 15; p. 2109
Main Authors:	Furlan, Walter D, Saavedra, Genaro, Monsoriu, Juan A
Format:	Journal Article
Language:	English
Published:	United States 01.08.2007
ISSN:	0146-9592
Online Access:	Get more information
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Summary:	We report the achievement of the first images to our knowledge obtained with a fractal zone plates (FraZPs). FraZPs are diffractive lenses characterized by the fractal structure of their foci. This property predicts an improved performance of FraZPs as image forming devices with an extended depth of field and predicts a reduced chromatic aberration under white-light illumination. These theoretical predictions are confirmed experimentally in this work. We show that the polychromatic modulation transfer function of a FraZP affected by defocus is about two times better than one corresponding to a Fresnel zone plate.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0146-9592
DOI:	10.1364/OL.32.002109