Enhancing Four-Wave-Mixing Processes by Nanowire Arrays Coupled to a Gold Film

Details Enhancing Four-Wave-Mixing Processes by Nanowire Arrays Coupled to a Gold Film Enhancing Four-Wave-Mixing Processes by Nanowire Arrays Coupled to a Gold Film

2011-10-13

arxiv.org/abs/1110.2838v1

Physics

Optics

5 pages, 4 figures

Scientific paper

We consider the process of four-wave mixing in an array of gold nanowires strongly coupled to a gold film. Using full-wave simulations, we perform a quantitative comparison of the four-wave mixing efficiency associated with the thin film geometry with and without the nanowire arrays. When the nanowire array is present, both the delocalized surface plasmon of the film as well as the localized surface plasmon resonances of the nanowires contribute to the local field enhancement, yielding an overall FWM efficiency enhancement of up to four orders-of-magnitude over a wide range of excitation angles. The film-coupled nanowire array is easily amenable to nanofabrication, and could find application as an ultra-compact component for integrated photonic and quantum optic systems.

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