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Proceedings Paper

Realization of negative index in second-order dispersive metamaterials using standard dispersion models for electromagnetic parameters
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Paper Abstract

In recent work, electromagnetic propagation velocities for plane waves in dispersive metamaterials were calculated assuming frequency dispersion up to the second order. The three velocities were expressed in terms of dispersive coefficients under certain simplifying constraints. Frequency domains were found to exist around resonances where group and phase velocities are in opposition, implying possible negative index behavior. In this paper, we incorporate in the derived equations physical models (including Debye, Lorentz and Condon) for material dispersion in permittivity, permeability and chirality in order to further examine the consequences of second-order dispersion leading to negative index for practical cases, and also evaluate the resulting phase and group indices.

Paper Details

Date Published: 12 September 2014
PDF: 8 pages
Proc. SPIE 9160, Metamaterials: Fundamentals and Applications 2014, 91602I (12 September 2014); doi: 10.1117/12.2065262
Show Author Affiliations
Tarig A. Algadey, Univ. of Dayton (United States)
Monish R. Chatterjee, Univ. of Dayton (United States)


Published in SPIE Proceedings Vol. 9160:
Metamaterials: Fundamentals and Applications 2014
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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