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On reflection from a half‐space with negative real permittivity and permeability
Author(s) -
Wang Jianwei,
Lakhtakia Akhlesh
Publication year - 2002
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.10352
Subject(s) - permittivity , microwave , permeability (electromagnetism) , refractive index , hyperboloid model , optics , reflection (computer programming) , free space , lorentz transformation , wideband , sign (mathematics) , time domain , physics , computational physics , materials science , mathematical analysis , dielectric , mathematics , chemistry , computer science , quantum mechanics , biochemistry , membrane , minkowski space , computer vision , programming language
The reflection of a normally incident wideband pulse by a half‐space whose permittivity and permeability obey the one‐resonance Lorentz model is calculated. The results are compared with those from frequency‐domain reflection analysis. In the spectral regime, wherein the real parts of the permittivity and the permeability are negative, as well as in small adjacent neighborhoods of that regime, the time‐domain analysis validates the conclusion that it is sufficient to ensure that the imaginary part of the refractive index is positive—regardless of the sign of the real part of the refractive index. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 465–467, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10352