We experimentally demonstrate significantly enhanced second harmonic generation using nanoengineered plasmonic nanocavities of core-shell structures (BaTiO<sup>3</sup>/Au). An enhancement factor of over 500 is measured in the second harmonic scattering efficiency compared to the bare core.
© 2010 The Optical Society
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(250.0250) Optoelectronics : Optoelectronics
(250.5403) Optoelectronics : Plasmonics
Y. Pu, R. Grange, C. Hsieh, and D. Psaltis, "Enhanced Second Harmonic Generation in Plasmonic Nanocavities," in Conference on Lasers and Electro-Optics 2010, OSA Technical Digest (CD) (Optical Society of America, 2010), paper QFC5.
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