Optical negative-index bulk metamaterials consisting of 2D perforated metal-dielectric stacks

Numerical simulations of a near-infrared negative-index metamaterial (NIM) slab consisting of multiple layers of perforated metal-dielectric stacks exhibiting a small imaginary part of the index over the wavelength range for negative refraction are presented. A consistent effective index is obtained...

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Bibliographic Details
Published in:Optics express 2006-07, Vol.14 (15), p.6778-6787
Main Authors: Zhang, Shuang, Fan, Wenjun, Panoiu, N C, Malloy, K J, Osgood, R M, Brueck, S R
Format: Article
Language:English
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Summary:Numerical simulations of a near-infrared negative-index metamaterial (NIM) slab consisting of multiple layers of perforated metal-dielectric stacks exhibiting a small imaginary part of the index over the wavelength range for negative refraction are presented. A consistent effective index is obtained using both scattering matrix and modal analysis approaches. Backward phase propagation is verified by calculation of fields inside the metamaterial. The NIM figure of merit, [ -Re(n)/Im(n) ], for these structures is improved by ~ 10x compared with previous reports, establishing a new approach to thick, low-loss metamaterials at infrared and optical frequencies.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.14.006778