Microwave Transmission of a Compound Metal Grating

Alastair P. Hibbins, Ian R. Hooper, Matthew J. Lockyear, and J. Roy Sambles
Phys. Rev. Lett. 96, 257402 – Published 27 June 2006

Abstract

An array of subwavelength slits in a metallic substrate supports a series of Fabry-Perot-like resonances, where each harmonic results in a transmission peak. Addition of extra slits per period yields a compound grating with a structure factor associated with the basis. In this study each repeat period is comprised of a central slit flanked by a pair of narrower slits. It supports three resonances for every Fabry-Perot-like solution. New and useful insight into this phenomenon is gained by describing each of the modes in terms of the band structure of diffractively coupled surface waves.

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  • Received 6 March 2006

DOI:https://doi.org/10.1103/PhysRevLett.96.257402

©2006 American Physical Society

Authors & Affiliations

Alastair P. Hibbins, Ian R. Hooper, Matthew J. Lockyear, and J. Roy Sambles

  • Electromagnetic Materials Group, School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom

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Issue

Vol. 96, Iss. 25 — 30 June 2006

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