We demonstrate that second-harmonic generation from noncentrosymmetric gold nano-Ts with nanogaps is governed by asymmetric distribution of the local fundamental field, and not strictly according to field enhancement in small nanogaps.
© 2007 OSA
(190.0190) Nonlinear optics : Nonlinear optics
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(260.0260) Physical optics : Physical optics
(260.3910) Physical optics : Metal optics
B. K. Canfield, H. Husu, J. Laukkanen, B. Bai, M. Kuittinen, J. Turunen, and M. Kauranen, "Second-Harmonic Generation Driven by Local Field Asymmetry in Noncentrosymmetric Gold Nano-Ts," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2007), paper JThD67.
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