title: Low-loss multilayered metamaterial exhibiting a negative index of refraction at visible wavelengths.
abstract: We experimentally demonstrate a low-loss multilayered metamaterial exhibiting a double-negative refractive index in the visible spectral range. To this end, we exploit a second-order magnetic resonance of the so-called fishnet structure. The low-loss nature of the employed magnetic resonance, together with the effect of the interacting adjacent layers, results in a figure of merit as high as 3.34. A wide spectral range of negative index is achieved, covering the wavelength region between 620 and 806 nm with only two different designs.
authors.affiliation: Nanophotonics Technology Center, Universidad Politécnica de Valencia, 46022 Valencia, Spain. cargarm2@ntc.upv.es
authors.forename: Carlos
authors.initials: C
authors.lastname: García-Meca
authors.forename: Juan
authors.initials: J
authors.lastname: Hurtado
authors.forename: Javier
authors.initials: J
authors.lastname: Martí
authors.forename: Alejandro
authors.initials: A
authors.lastname: Martínez
authors.forename: Wayne
authors.initials: W
authors.lastname: Dickson
authors.forename: Anatoly V
authors.initials: AV
authors.lastname: Zayats
mesh_terms: D008027:Light; D055620:Optical Phenomena; D013057:Spectrum Analysis