Epsilon Near Zero Mode for active THz devices

Jean-Jacques Greffet; Simon Vassant; Alexandre Archambault; Francois Marquier; Fabrice Pardo; Ulf Gennser; Antonella Cavanna; Jean Luc Pelouard

META 2021, META'12

Jean-Jacques Greffet, Simon Vassant, Alexandre Archambault, Francois Marquier, Fabrice Pardo, Ulf Gennser, Antonella Cavanna, Jean Luc Pelouard

Last modified: 2011-12-05

Abstract

We show that electron-THz radiation can be enhanced using an extremy confined mode that we call epsilon near zero (ENZ) mode. We demonstrate a 52% absorption of a normally incident 8.74 THz wave in the volume of a single quantum well with thickness 22 nm. We also demonstrate electrical modulation of this absorption.

Keywords

nanophotonics, teraHertz, surface wave,