Abstract
This work demonstrates the angular dependence of dual-band negative-index materials implemented by elliptical nanohole arrays (ENAs) consisting of an dielectric layer between two Au films. This article, it is believed for the first time, analyzes the scattering coefficients and displacement current of the ENA at different angles of plane-wave incidence to show that the ENA is double negative (showing both a negative effective permeability and a negative effective permittivity ) at multiple wavelengths (1095 and 1680 nm) for polarization over a broad range of incident angles.
©2012 Optical Society of America
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