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| VOLUME 98 (2013) | ISSUE 8 | PAGE 561 |
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Nonlinear reshaping of THz pulses with graphene metamaterials
Yu. Rapoport, V. Grimalsky+, I. Iorsh*, N. Kalinich, S. Koshevaya+, Ch. Castrejon-Martinez+, Yu. S. Kivshar*×
Faculty of Physics, Kiev National University, 03022 Kiev, Ukraine +CIICAp and Faculty of Science, Autonomous University of State Morelos, Cuernavaca, 62209 Mor, Mexico *St.Peterburg National Research University of Information Technologies, Mechanics and Optics, 197101 St.Petersburg, Russia ×Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra, 0200 ACT, Australia
Abstract
We study the propagation of electromagnetic waves through a slab of graphene metamaterial composed of the layers of graphene separated by dielectric slabs. Starting from the kinetic expression for two-dimensional electric current in graphene, we derive a novel equation describing the nonlinear propagation of THz electromagnetic pulses through the layered graphene-dielectric structure in the presence of losses and nonlinearities. We demonstrate strong nonlinearity-induced reshaping of transmitted and reflected THz pulses through the interaction with the thin multilayer graphene metamaterial structure. |