title: Optical negative-index bulk metamaterials consisting of 2D perforated metal-dielectric stacks.
abstract: 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.
authors.forename: Shuang
authors.initials: S
authors.lastname: Zhang
authors.forename: Wenjun
authors.initials: W
authors.lastname: Fan
authors.forename: N C
authors.initials: NC
authors.lastname: Panoiu
authors.forename: K J
authors.initials: KJ
authors.lastname: Malloy
authors.forename: R M
authors.initials: RM
authors.lastname: Osgood
authors.forename: S R
authors.initials: SR
authors.lastname: Brueck