A V Kildishev et al 2008 New J. Phys. 10 115029 doi:10.1088/1367-2630/10/11/115029
Transformation optics: approaching broadband electromagnetic cloaking
Focus on Cloaking and Transformation OpticsA V Kildishev1, W Cai1,2, U K Chettiar1 and V M Shalaev1,3
Show affiliationsPart of Focus on Cloaking and Transformation Optics
An approach to broadband cloaking of light waves is analysed for a simplified case of a scaling transformation for a general cylindrical coordinate system. The proposed approach requires metamaterials with specifically engineered dispersion. The restriction on the signs of gradients in the dispersion dependencies of the dielectric permittivity and the magnetic permeability for different operational wavelengths is revealed and is shown to cause difficulties unless additional gain-assisted compensation for losses or electromagnetically induced transparency is introduced in the cloaking system.
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Issue 11 (November 2008)
Received 20 July 2008
Published 27 November 2008
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Transformation optics: approaching broadband electromagnetic cloaking
A V Kildishev et al 2008 New J. Phys. 10 115029
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