We investigate the second-order nonlinear response of dipole nanoantennas with narrow gaps. Second-harmonic light originates mainly from weak nonlinear forces acting on free-electrons, such as Lorentz and Coulomb forces, as well as convective and quantum pressure forces. However, dipole nanoantennas provide several mechanisms to magnify such nonlinearities both in the near- and far-field regions.
Second-harmonic light generated by dipole nanoantennas
de Ceglia D.;VINCENTI, MARIA ANTONIETTA;DE ANGELIS, Costantino;LOCATELLI, Andrea;
2015-01-01
Abstract
We investigate the second-order nonlinear response of dipole nanoantennas with narrow gaps. Second-harmonic light originates mainly from weak nonlinear forces acting on free-electrons, such as Lorentz and Coulomb forces, as well as convective and quantum pressure forces. However, dipole nanoantennas provide several mechanisms to magnify such nonlinearities both in the near- and far-field regions.File in questo prodotto:
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