META 2021, META'12

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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

Last modified: 2011-12-05


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. 


nanophotonics, teraHertz, surface wave,