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Wave propagation, refraction, and focusing phenomena in Lorentzian double‐negative materials: A theoretical and numerical study
Author(s) -
Kärkkäinen M. K.,
Maslovski S. I.
Publication year - 2003
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10807
Subject(s) - slab , negative refraction , discretization , causality (physics) , physics , plane wave , refraction , plane (geometry) , microwave , wave propagation , optics , classical mechanics , computational physics , mathematical analysis , metamaterial , quantum mechanics , mathematics , geometry , geophysics
Electromagnetic effects in double‐negative (DNG) materials are considered from the theoretical and numerical points of view. Special attention is given to the causality aspects. The refracton of a cylindrical wave excited by a line source placed above a plane DNG slab and the wave propagation through the slab are studied. The DNG material response is modelled by the resonant constitutive parameters of the Lorentzian form. A novel technique for discretization of the constitutive equations is proposed. The negative refraction and slab focusing phenomena are clearly seen from the simulations. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 4–7, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/mop.10807