Abstract-Plasmonic Terahertz Amplification in Graphene-Based Asymmetric Hyperbolic Metamaterial

Igor Nefedov 1,* and Leonid Melnikov 2

1

School of Electrical Engineering, Aalto University, P.O. Box 13000, Aalto 00076, Finland

2

Yuri Gagarin State Technical University of Saratov, 77, Politekhnicheskaya, Saratov 410054, Russia; E-Mail: lam-pels@yandex.ru

*

Author to whom correspondence should be addressed; E-Mail: igor.nefedov@aalto.fi; Tel.: +358-442-709-251.

http://www.mdpi.com/2304-6732/2/2/594/htm

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.