Giant enhancement of the third harmonic in graphene integrated in a layered structure
Graphene was shown to have strongly nonlinear electrodynamic properties. In particular, being irradiated by an electromagnetic wave with the frequency ω, it can efficiently generate higher frequency harmonics. Here, we predict that in a specially designed structure “graphene— dielectric—metal” the third-harmonic ( 3ω) intensity can be increased by more than two orders of magnitude as compared to an isolated graphene layer.