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

Tarig A. Algadey; Monish R. Chatterjee

doi:10.1117/12.2065262

12 September 2014 Realization of negative index in second-order dispersive metamaterials using standard dispersion models for electromagnetic parameters

Tarig A. Algadey, Monish R. Chatterjee

Author Affiliations +

Proceedings Volume 9160, Metamaterials: Fundamentals and Applications 2014; 91602I (2014) https://doi.org/10.1117/12.2065262
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

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.

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Tarig A. Algadey and Monish R. Chatterjee "Realization of negative index in second-order dispersive metamaterials using standard dispersion models for electromagnetic parameters", Proc. SPIE 9160, Metamaterials: Fundamentals and Applications 2014, 91602I (12 September 2014); https://doi.org/10.1117/12.2065262

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