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Proceedings Paper

Dual hyperbolic-elliptic media
Author(s): Carlos J. Zapata-Rodríguez; David Pastor; Pablo Cencillo; Mario Avellaneda; Slobodan Vukovic; Juan J. Miret
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Paper Abstract

Recent disclosures on subwavelength plasmonic crystals, like the potential excitation of a pair of coexisting wave-fields with opposite refraction, only can be understood by considering two dispersion branches with completely different features that characterize the metamaterial. One branch gives elliptic-like dispersion and the other provides hyperbolic-like dispersion. However the effective medium approximation, also known as Rytov approximation, is not consistent with both curves simultaneously. We follow an approach leading to a single curve that allows a complete description of both diffraction behaviors concurrently. Importantly only two parameters of the closed curve, together with the lattice period, fulfill such a complete picture. In addition, our semi-analytical approach may include more general situations straightforwardly.

Paper Details

Date Published: 1 May 2012
PDF: 7 pages
Proc. SPIE 8423, Metamaterials VII, 84231Z (1 May 2012); doi: 10.1117/12.922118
Show Author Affiliations
Carlos J. Zapata-Rodríguez, Univ. de València (Spain)
David Pastor, Univ. de València (Spain)
Pablo Cencillo, Univ. de València (Spain)
Mario Avellaneda, Univ. de València (Spain)
Slobodan Vukovic, Univ. of Belgrade (Serbia)
Juan J. Miret, Univ. de Alicante (Spain)


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

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