Harnessing collisional nonlinearity for enhanced harmonic generation by ultraviolet plasmonic nanoparticles
Matteo Silvestri,
Matteo Venturi,
Mattia Di Muzio
et al.
Abstract:We investigate the contribution of inelastic electron collisions to nonlinear (NL) dynamics in ultraviolet plasmonic nanoparticles, exploring their potential for harmonic generation. Employing the Landau weak coupling formalism to model radiation-driven electron dynamics in sodium and aluminum, we account for both electron–electron and electron–phonon scattering processes by a set of hydrodynamic equations, which we solve perturbatively to obtain third-order NL susceptibilities. Furthermore, we model high harm… Show more
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