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Negative Index Materials: New Frontiers in Optics

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Abstract

Negative refraction, a phenomenon first hypothesized by Victor Veselago in 1968 to occur in materials whose permittivity and permeability are simultaneously negative, has now been confirmed in several independent studies. These experiments demonstrate that it is indeed possible to design and fabricate an artificial material, now known as metamaterials, having an index-of-refraction that is negative over some finite band of frequencies. Some of the more striking or exotic wave propagation behavior predicted to occur in negative index materials, such as reflectionless compact lenses, near-field refocusing, perfect lensing, phase compensation and novel wave-guiding phenomena—place challenging demands on the material parameters.

© 2005 Optical Society of America

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