Open AccessLow-loss single-layer metamaterial with negative index of refraction at visible wavelengths
Author(s) -
Carlos GarcíaMeca,
Rubén Ortuño,
Rosario Salvador,
Alejandro Martı́nez,
J. Martí
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.009320
Subject(s) - metamaterial , optics , refractive index , negative refraction , wavelength , materials science , visible spectrum , dielectric , ranging , photonic metamaterial , infrared , optoelectronics , physics , telecommunications , computer science
We present a structure exhibiting a negative index of refraction at visible or near infrared frequencies using a single metal layer. This contrasts with recently developed structures based on metal-dielectric-metal composites. The proposed metamaterial consists of periodically arranged thick stripes interacting with each other to give rise to a negative permeability. Improved designs that allow for a negative index for both polarizations are also presented. The structures are numerically analyzed and it is shown that the dimensions can be engineered to shift the negative index band within a region ranging from telecommunication wavelengths down to blue light.