Augmenting Second Harmonic Generation Using Fano Resonances in Plasmonic Systems

Significant augmentation of second harmonic generation using Fano resonances in plasmonic heptamers made of silver is theoretically and experimentally demonstrated. The geometry is engineered to simultaneously produce a Fano resonance at the fundamental wavelength, resulting in a strong localization of the fundamental field close to the system, and a higher order scattering peak at the second harmonic wavelength. These results illustrate the versatility of Fano resonant structures to engineer specific optical responses both in the linear and nonlinear regimes thus paving the way for future investigations on the role of dark modes in nonlinear and quantum optics.


Published in:
Nano Letters, 13, 4, 1847–1851
Year:
2013
Publisher:
Washington, Amer Chemical Soc
ISSN:
1530-6992
Keywords:
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 Record created 2013-06-11, last modified 2018-03-17

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