Subwavelength diffraction-free beams in metallic wire media

Juan J. Miret; Carlos J. Zapata-Rodríguez; Slobodan Vuković; David Pastor

doi:10.1117/12.922122

1 May 2012 Subwavelength diffraction-free beams in metallic wire media

Juan J. Miret, Carlos J. Zapata-Rodríguez, Slobodan Vuković, David Pastor

Proceedings Volume 8423, Metamaterials VII; 84230V (2012) https://doi.org/10.1117/12.922122
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

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.

Citation Download Citation

Juan J. Miret, Carlos J. Zapata-Rodríguez, Slobodan Vuković, and David Pastor "Subwavelength diffraction-free beams in metallic wire media", Proc. SPIE 8423, Metamaterials VII, 84230V (1 May 2012); https://doi.org/10.1117/12.922122

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