Enhanced Terahertz Amplification Based on Photo-Excited Graphene-Dielectric Hybrid Metasurface

Graphene under optical pump has been shown to be an attractive gain medium with negative dynamic conductivity at terahertz frequencies. However, the amplification over a monolayer graphene is very weak due to its one-atom thickness. In this paper, the proposed graphene-dielectric reflective metasurf...

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Bibliographic Details

Published in:	Nanomaterials
Main Authors:	Shengnan Guan, Jierong Cheng, Tiehong Chen, Shengjiang Chang
Format:	Article
Language:	English
Published:	MDPI AG 2020-12-01
Subjects:	amplification metasurface terahertz
Online Access:	https://www.mdpi.com/2079-4991/10/12/2448