L. Rodríguez-Suné

TL;DR: In this article, the second and third harmonic generation from a 20 nm-thick indium tin oxide layer in proximity of the epsilon-near-zero condition was investigated.

TL;DR: In this paper, the authors studied electromagnetic pulse propagation in an indium tin oxide nanolayer in the linear and nonlinear regimes and showed that nonlocal effects induce additional absorption resonances and anisotropic dielectric response, and that large, nonlinear refractive index changes can occur without the need for epsilon-near zero modes to couple with plasmonic resonators.

TL;DR: It is shown that measurement of the angular and polarization dependence of the observed harmonic components allows one to infer the different nonlinear mechanisms that trigger these processes, including not only the bulk nonlinearity but also the surface and magnetic Lorentz contributions, which usually are either hidden by the bulk contributions or assumed to be negligible.

TL;DR: In this article, the relative roles that bound electrons and an intensity dependent free electron density (hot electrons) play in third harmonic generation from 20 nm-and 70 nm-thick gold layers, for TE-and TM-polarized incident light pulses are discussed.

TL;DR: In this article, a combined experimental and theoretical approach based on the hydrodynamic model that uses experimental results of harmonic generation conversion efficiencies to retrieve complex, nonlinear dispersion curves is presented.