Arbitrary beam control using passive lossless metasurfaces enabled by orthogonally polarized custom surface waves

Do-Hoon Kwon and Sergei A. Tretyakov
Phys. Rev. B 97, 035439 – Published 30 January 2018

Abstract

For passive, lossless impenetrable metasurfaces, a design technique for arbitrary beam control of receiving, guiding, and launching is presented. Arbitrary control is enabled by a custom surface wave in an orthogonal polarization such that its addition to the incident (input) and the desired scattered (output) fields is supported by a reactive surface impedance everywhere on the reflecting surface. Such a custom surface wave (SW) takes the form of an evanescent wave propagating along the surface with a spatially varying envelope. A growing SW appears when an illuminating beam is received. The SW amplitude stays constant when power is guided along the surface. The amplitude diminishes as a propagating wave (PW) is launched from the surface as a leaky wave. The resulting reactive tensor impedance profile may be realized as an array of anisotropic metallic resonators printed on a grounded dielectric substrate. Illustrative design examples of a Gaussian beam translator-reflector, a probe-fed beam launcher, and a near-field focusing lens are provided.

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  • Received 8 October 2017
  • Revised 10 December 2017

DOI:https://doi.org/10.1103/PhysRevB.97.035439

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Do-Hoon Kwon1,* and Sergei A. Tretyakov2

  • 1Department of Electrical and Computer Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
  • 2Department of Electronics and Nanoengineering, Aalto University, P.O. Box 15500, 00076 Aalto, Finland

  • *dhkwon@umass.edu

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Issue

Vol. 97, Iss. 3 — 15 January 2018

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