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Self-consistent calculation of metamaterials with gain

TitleSelf-consistent calculation of metamaterials with gain
Publication TypeJournal Article
Year of Publication2009
AuthorsFang A, Koschny T, Wegener M, Soukoulis CM
Journal TitlePhysical Review B
Volume79
Pages241104
Date Published06/01
ISBN Number1098-0121
Accession NumberISI:000267699700004
Keywordsindex, metamaterials, nanostructured materials, photonic crystals, refractive index, wavelengths
Abstract

We present a computational scheme allowing for a self-consistent treatment of a dispersive metallic photonic metamaterial coupled to a gain material incorporated into the nanostructure. The gain is described by a generic four-level system. A critical pumping rate exists for compensating the loss of the metamaterial. Nonlinearities arise due to gain depletion beyond a certain critical strength of a test field. Transmission, reflection, and absorption data as well as the retrieved effective parameters are presented for a lattice of resonant square cylinders embedded in layers of gain material and split ring resonators with gain material embedded into the gaps.
URL<Go to ISI>://000267699700004
DOI10.1103/Physrevb.79.241104