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Nonlocal effect on the enhancement of the fundamental wave and the second harmonic generation in the metal dimmer structure is mainly studied in this paper. The dielectric model of metals was described by the hydrodynamic model. From the simulation results, it is found that the nonlocal effect weakens the field enhancement obviously. In addition, with the same spacing, the nonlocal effect on the second...
We numerically studied nonlocal effects that affect enhancement of second harmonic generation (SHG) in a metal nanofilm plasmonic structure. The hydrodynamical Drude model was implemented for metal film in time-domain simulations that combine nonlocal effects and nonlinear effects. It is found that the nonlocal effect on the second harmonic wave is more severe than that on the fundamental wave. The...
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