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Proceedings Paper

Subwavelength diffraction-free beams in metallic wire media
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Paper Abstract

We present recent progress in nondiffracting subwavelength fields propagating in complex plasmonic nanostructures. In particular, diffraction-free localized solutions of Maxwell's equations in a periodic wire medium are discussed thoroughly. The Maxwell-Garnett model is used to provide analytical expressions of the electromagnetic fields for Bessel beams directed along the cylinders axes. Large filling factors of the metallic composite induce resonant-plasmonic spots with a size that remains far below the limit of diffraction. Some numerical simulations based on the finite-element method support our analytical approach.

Paper Details

Date Published: 1 May 2012
PDF: 6 pages
Proc. SPIE 8423, Metamaterials VII, 84230V (1 May 2012); doi: 10.1117/12.922122
Show Author Affiliations
Juan J. Miret, Univ. de Alicante (Spain)
Carlos J. Zapata-Rodríguez, Univ. de València (Spain)
Slobodan Vuković, Univ. of Belgrade (Serbia)
David Pastor, Univ. de València (Spain)

Published in SPIE Proceedings Vol. 8423:
Metamaterials VII
Allan D. Boardman; Nigel P. Johnson; Richard W. Ziolkowski, Editor(s)

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