Conference 11770 > Paper 11770-31
Paper 11770-31

Enhanced second-harmonic generation by single metal–insulator multilayered nanocavities with axial symmetry resonating in the near-infrared

Abstract

We report efficient second-harmonic emission by single multilayer metal–dielectric nanocavities. Engineering the intrinsic interface-induced symmetry breaking by resonant optical absorption design, allows to achieve almost two orders of magnitude higher second-harmonic generation efficiency compared to gold nanostructures with the same geometry. We estimate a second-order nonlinear susceptibility of the order of 1 pm/V, which is comparable to widely used nonlinear crystals. We envision that our system, which combines the advantages of both plasmonic and dielectric materials, might enable the realization of composite nano-systems for an efficient multi-purpose manipulation of nonlinear optical processes at the nanoscale.

Presenter

Univ. du Luxembourg (Luxembourg)
Author
Attilio Zilli
Politecnico di Milano (Italy)
Author
The Univ. of Sheffield (United Kingdom)
Author
Istituto Italiano di Tecnologia (Italy), Univ. degli Studi di Genova (Italy)
Author
Marco Finazzi
Politecnico di Milano (Italy)
Author
Istituto Italiano di Tecnologia (Italy)
Author
Politecnico di Milano (Italy)
Presenter/Author
Univ. du Luxembourg (Luxembourg)