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  • Title: Efficient second-harmonic generation in nonlinear plasmonic waveguide.
    Author: Lu FF, Li T, Hu XP, Cheng QQ, Zhu SN, Zhu YY.
    Journal: Opt Lett; 2011 Sep 01; 36(17):3371-3. PubMed ID: 21886214.
    Abstract:
    We theoretically studied a nonlinear optical process in a hybrid plasmonic waveguide composed of a nonlinear dielectric waveguide and a metal film with a separation of a thin air gap. Owing to the hybridization effect of guided mode and surface plasmon polariton mode, this particular waveguide is able to confine the optical-field in a deep subwavelength scale together with low propagation loss. Based on this, efficient second-harmonic generations (SHG) were revealed at the fundamental wavelength of λ=1.55 μm with good field confinement. The SHG efficiency, as well as the coupling coefficient and mode area, were analyzed and discussed in detail with respect to the structural parameters.
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