Metamaterials with gradient negative index of refraction

Anatoliy O. Pinchuk, George C. Schatz

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

We propose a new metamaterial with a gradient negative index of refraction, which can focus a collimated beam of light coming from a distant object. A slab of the negative refractive index metamaterial has a focal length that can be tuned by changing the gradient of the negative refractive index. A thin metal film pierced with holes of appropriate size or spacing between them can be used as a metamaterial with the gradient negative index of refraction. We use finite-difference time-domain calculations to show the focusing of a plane electromagnetic wave passing through a system of equidistantly spaced holes in a metal slab with decreasing diameters toward the edges of the slab.

Original languageEnglish
Pages (from-to)A39-A44
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume24
Issue number10
DOIs
Publication statusPublished - Oct 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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