Negative refractive index in optics of metal-dielectric composites

Alexander V. Kildishev, Wenshan Cai, Uday K. Chettiar, Hsiao Kuan Yuan, Andrey K. Sarychev, Vladimir P. Drachev, Vladimir M. Shalaev

Research output: Contribution to journalArticlepeer-review

163 Citations (Scopus)


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 μm. The inverted structure of paired voids in metal films can 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 are discussed.

Original languageEnglish
Pages (from-to)423-433
Number of pages11
JournalJournal of the Optical Society of America B: Optical Physics
Issue number3
Publication statusPublished - Mar 2006
Externally publishedYes


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