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Ashwin C. Atre, Aitzol García-Etxarri, Hadiseh Alaeian and Jennifer A. Dionne A Broadband Negative Index Metamaterial at Optical Frequencies Advanced Optical Materials 1

Article first published online: 7 MAR 2013 | DOI: 10.1002/adom.201200022

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A broadband metamaterial presenting negative indices across hundreds of nanometers in the visible and near-infrared spectral regimes is demonstrated theoretically. Transformation optics techniques are used to conformally map a plasmonic waveguide to a split-ring-resonator-type structure that supports degenerate electric and magnetic dipoles. A periodic array of such resonators exhibits broadband negative refractive indices confirmed through both phase and refraction simulations.

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