Bulk photonic metamaterial with hyperbolic dispersion

Details Bulk photonic metamaterial with hyperbolic dispersion Bulk photonic metamaterial with hyperbolic dispersion

2008-09-05

arxiv.org/abs/0809.1028v1

Physics

Condensed Matter

Materials Science

6 pages, 4 figurs

Scientific paper

In this work, we demonstrate a self-standing bulk three-dimensional metamaterial based on the network of silver nanowires in an alumina membrane. This constitutes an anisotropic effective medium with hyperbolic dispersion, which can be used in sub-diffraction imaging or optical cloaks. Highly anisotropic dielectric constants of the material range from positive to negative, and the transmitted laser beam shifts both toward the normal to the surface, as in regular dielectrics, and off the normal, as in anisotropic dielectrics with the refraction index smaller than one. The designed photonic metamaterial is the thickest reported in the literature, both in terms of its physical size 1cm x 1cm x 51 mm, and the number of vacuum wavelengths, N=61 at l=0.84 mm.

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