From the generalized reflection law to the realization of perfect anomalous reflectors

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors

Date

2017-08-01

Department

Department of Electronics and Nanoengineering

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Mcode

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Language

en

Pages

11

Series

Science Advances, Volume 3, issue 8

Abstract

The use of the generalized Snell’s law opens wide possibilities for the manipulation of transmitted and reflected wavefronts. However, known structures designed to shape reflection wavefronts suffer from significant parasitic reflections in undesired directions. We explore the limitations of the existing solutions for the design of passive planar reflectors and demonstrate that strongly nonlocal response is required for perfect performance. A new paradigm for the design of perfect reflectors based on energy surface channeling is introduced. We realize and experimentally verify a perfect design of an anomalously reflective surface using an array of rectangular metal patches backed by a metallic plate. This conceptually new mechanism for wavefront manipulation allows the design of thin perfect reflectors, offering a versatile design method applicable to other scenarios, such as focusing reflectors, surface wave manipulations, or metasurface holograms, extendable to other frequencies.

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DOI

10.1126/sciadv.1602714

Citation

Diaz Rubio, A, Asadchy, V, Elsakka, A A & Tretyakov, S 2017, 'From the generalized reflection law to the realization of perfect anomalous reflectors', Science Advances, vol. 3, no. 8, e1602714. https://doi.org/10.1126/sciadv.1602714

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https://urn.fi/URN:NBN:fi:aalto-201711217612

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[article-cris] Sähkötekniikan korkeakoulu / ELEC