Self-organization approach for THz polaritonic metamaterials

TitleSelf-organization approach for THz polaritonic metamaterials
Publication TypeJournal Article
Year of Publication2012
AuthorsReyes-Coronado A, Acosta MF, Merino RI, Orera VM, Kenanakis G, Katsarakis N, Kafesaki M, Mavidis C, de Abajo JG, Economou EN, Soukoulis CM
Journal TitleOptics Express
Volume20
Pages14663-14682
Date Published06
Type of ArticleArticle
ISBN Number1094-4087
Accession NumberWOS:000305473000104
Keywordsdiffraction limit, microstructure, negative refractive-index, optical hyperlens
Abstract

In this paper we discuss the fabrication and the electromagnetic (EM) characterization of anisotropic eutectic metamaterials, consisting of cylindrical polaritonic LiF rods embedded in either KCl or NaCl polaritonic host. The fabrication was performed using the eutectics directional solidification self-organization approach. For the EM characterization the specular reflectance at far infrared, between 3 THz and 11 THz, was measured and also calculated by numerically solving Maxwell equations, obtaining good agreement between experimental and calculated spectra. Applying an effective medium approach to describe the response of our samples, we predicted a range of frequencies in which most of our systems behave as homogeneous anisotropic media with a hyperbolic dispersion relation, opening thus possibilities for using them in negative refractive index and imaging applications at THz range. (C) 2012 Optical Society of America

URL<Go to ISI>://WOS:000305473000104
DOI10.1364/OE.20.014663
Alternate JournalOpt. Express