Infrared cloaking based on the electric response of split ring resonators

Electromagnetic cloak was recently demonstrated in the microwave domain using a metamaterial structure made of metallic split ring resonators (SRR) arranged in a cylindrical geometry. The SRRs were designed to provide a magnetic response that varied in an appropriate manner with the radial coordinat...

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Bibliographic Details
Published inOptics express Vol. 16; no. 12; pp. 9191 - 9198
Main Authors Kanté, Boubacar, de Lustrac, André, Lourtioz, Jean-Michel, Burokur, Shah N
Format Journal Article
LanguageEnglish
Published United States Optical Society of America - OSA Publishing 09.06.2008
Subjects
Computer Simulation
Engineering Sciences
Equipment Design
Equipment Failure Analysis
Infrared Rays
Light
Models, Theoretical
Optics and Photonics
Scattering, Radiation
Security Measures
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Summary:Electromagnetic cloak was recently demonstrated in the microwave domain using a metamaterial structure made of metallic split ring resonators (SRR) arranged in a cylindrical geometry. The SRRs were designed to provide a magnetic response that varied in an appropriate manner with the radial coordinate. In the present work, we propose an electromagnetic cloak, which exploits the electric response of gold SRRs instead of their magnetic response. Numerical simulations performed at infrared frequencies (~100 THz) reveal low loss and weak impedance mismatch, thereby proving the interest in using SRRs as ???universal??? atoms in the design of metamaterials. We also show that SRRs can be ultimately replaced by simple cut wires for the construction of approximate electromagnetic cloaks whose dielectric permittivity is the only parameter varying with space coordinates.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.16.009191