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arXiv · 2011.05640

Optimization of second-harmonic generation from touching plasmonic wires

Shimon Elkabetz·K. Nireekshan Reddy·Parry Y. Chen·Antonio I. Fern andez-Domnguez·Yonatan Sivan
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Abstract

We employ transformation optics to optimize the generic nonlinear wave interaction of second-harmonic generation from a pair of touching metallic wires. We demonstrate a 10 orders of magnitude increase in the second-harmonic scattering cross-section by increasing the background permittivity and a 5 orders of magnitude increase in efficiency with respect to a single wire. These results have clear implications for the design of nanostructured metallic frequency-conversion devices. Finally, we exploit our analytic solution of a non-trivial nanophotonic geometry as a platform for performing a critical comparison of the strengths, weaknesses and validity of other prevailing theoretical approaches previously employed for nonlinear wave interactions at the nanoscale.

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Shimon Elkabetz, K. Nireekshan Reddy, Parry Y. Chen, Antonio I. Fern andez-Domnguez, Yonatan Sivan. 2020-11-11. Optimization of second-harmonic generation from touching plasmonic wires. https://doi.org/10.1103/physrevb.103.075411

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