CST – Computer Simulation Technology

Title:
Low-loss single-layer metamaterial with negative index of refraction at visible wavelengths
Author(s):
C. García-Meca, R. Ortuño, R. Salvador, A. Martínez, J. Martí
Source:
Optics Express
Vol./Issue/Date:
Volume: 15, Issue: 15, 2007
Year:
2007
Page(s):
9320-9325
Abstract:
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.
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