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Negative Refractive Index in Optics of Metal-Dielectric Composites

A. V. Kildishev·W. Cai·U. K. Chettiar·H. -K. Yuan·A. K. Sarychev·V. P. Drachev·V. M. Shalaev
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Abstract

Specially designed metal-dielectric composites can have a negative refractive index in the optical range. Specifically, it is shown that arrays of single and paired nanorods can provide such negative refraction. For pairs of metal rods, a negative refractive index has been observed at 1.5 micrometer. The inverted structure of paired voids in metal films may also exhibit a negative refractive index. A similar effect can be accomplished with metal strips in which the refractive index can reach -2. The refractive index retrieval procedure and the critical role of light phases in determining the refractive index is discussed.

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A. V. Kildishev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev, V. M. Shalaev. 2005-10-01. Negative Refractive Index in Optics of Metal-Dielectric Composites. https://doi.org/10.1364/josab.23.000423

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