Abstract
We numerically investigate second-harmonic generation from multiresonant plasmonic metasurfaces by designing an array consisting of L-shaped aluminum nanoparticles that simultaneously supports two surface lattice resonances with relatively high quality factors (>100). Using an approach based on the nonlinear discrete-dipole approximation, we predict an over million-fold enhancement of the emitted second-harmonic intensity from a particle at the center of the metasurface compared to an individual particle and estimate that conversion efficiencies of around 10-5 could be achievable from the surface. Our results are an important step towards making nonlinear metasurfaces practical for nonlinear applications, such as for frequency conversion.
Original language | English |
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Pages (from-to) | E30-E35 |
Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 36 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2019 |
Publication type | A1 Journal article-refereed |
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics