2007/04/27 by Alexander A. Govyadinov, Mikhail A. Noginov, M. A. Noginov +1 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Metamaterials and Metasurfaces Applications #Plasmonic and Surface Plasmon Research #physics.gen-ph #physics.optics
paper · pdf · doi:10.1063/1.2800309
published as Appl. Phys. Lett. v.91, p.191103 (2007)
arxiv created 2007/04/27 · openalex publication_date 2007/11/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We derive an approach to determine the causal direction of wavevectors of modes in optical metamaterials, which, in turn, determines signs of refractive index and impedance as a function of real and imaginary parts of dielectric permittivity and magnetic permeability. We use the developed technique to demonstrate that the interplay between resonant response of constituents of metamaterials can be used to achieve efficient dispersion management. Finally, we demonstrate broadband dispersionless index and impedance matching in active nanowire-based negative index materials. Our work has a potential to open new practical applications of negative index composites for broadband lensing, imaging, and pulse routing.