Plasmonic Terahertz Amplification in Graphene-Based Asymmetric Hyperbolic Metamaterial

Abstract

We propose and theoretically explore terahertz amplification, based on stimulated generation of plasmons in graphene asymmetric hyperbolic metamaterials (AHMM), strongly coupled to terahertz radiation. In contrast to the terahertz amplification in resonant nanocavities, AHMM provides a wide-band THz amplification without any reflection in optically thin graphene multilayers.

Keywords

• terahertz amplification
• graphene multilayer
• asymmetric hyperbolic metamaterials