Multiple-plane image formation by Walsh zone plates | Zendy

Federico Machado | Zendy; Vicente Ferrando | Zendy; Fernando Giménez Palomares | Zendy; Walter D. Furlan | Zendy; Juan A. Monsoriu | Zendy

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Multiple-plane image formation by Walsh zone plates

Author(s) -

Federico Machado,

Vicente Ferrando,

Fernando Giménez Palomares,

Walter D. Furlan,

Juan A. Monsoriu

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.021210

Subject(s) - aperiodic graph , optics , plane (geometry) , walsh function , image plane , diffraction , phase (matter) , physics , filter (signal processing) , pixel , binary number , image (mathematics) , computer science , mathematics , geometry , computer vision , algorithm , arithmetic , combinatorics , quantum mechanics

A radial Walsh filter is a phase binary diffractive optical element characterized by a set of concentric rings that take the phase values 0 or π, corresponding to the values + 1 or -1 of a given radial Walsh function. Therefore, a Walsh filter can be re-interpreted as an aperiodic multifocal zone plate, capable to produce images of multiple planes simultaneously in a single output plane of an image forming system. In this paper, we experimentally demonstrate for the first time the focusing capabilities of these structures. Additionally, we report the first achievement of images of multiple-plane objects in a single image plane with these aperiodic diffractive lenses.

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