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Less is more - enhancement of second-harmonic generation from metasurfaces by reduced nanoparticle density
Robert Czaplicki, Antti Kiviniemi, Mikko J. Huttunen +7
We investigate optical second-harmonic generation (SHG) from metasurfaces where noncentrosymmetric V-shaped gold nanoparticles are ordered into regular array configurations. In con…
Homogenization and Scattering Analysis of Second-Harmonic Generation in Nonlinear Metasurfaces
Karim Achouri, Gabriel D. Bernasconi, Jérémy Butet +1
We propose an extensive discussion on the homogenization and scattering analysis of second-order nonlinear metasurfaces. Our developments are based on the generalized sheet transit…
Revealing a mode interplay that controls second harmonic radiation in gold nanoantennas
Jérémy Butet, Gabriel D. Bernasconi, Marlène Petit +5
In this work, we investigate the generation of second harmonic light by gold nanorods and demonstrate that the collected nonlinear intensity depends upon a phase interplay between…
Origin of optical second-harmonic generation in spherical gold nanoparticles: Local surface and nonlocal bulk contributions
Guillaume Bachelier, Jérémy Butet, Isabelle Russier-Antoine +3
The second-harmonic generation of 150 nm spherical gold nanoparticles is investigated both experimentally and theoretically. We demonstrate that the interference effects between di…