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Electric field-induced high order nonlinearity in plasmonic nanoparticles retrieved with time-dependent density functional theory

AuthorsAguirregabiria, Garikoitz; Marinica, Dana Codruta; Esteban, Ruben; Kazansky, Andrey K.; Aizpurua, Javier CSIC ORCID ; Borisov, Andrei G.
Nonlinear optics
Issue Date2017
PublisherAmerican Chemical Society
CitationACS Photonics 4(3): 613-620 (2017)
AbstractThe nonlinear response of metallic nanoparticles is obtained from quantum time dependent density functional theory calculations. Without any aprioristic assumption our calculations allow us to identify high-order harmonic generation in canonical plasmonic structures such as spherical single particles and dimers. Furthermore, we demonstrate that under currently available experimental conditions, the application of an external polarizing field to the nanoparticles allows to actively control even-order harmonic generation in otherwise symmetry forbidden situations. Our quantum calculations provide quantitative access to the high-order response of metallic nanoantennas, which is of utmost importance in the design, control, and exploitation of optoelectronic devices as well as in the generation of extreme ultraviolet radiation.
Identifiersdoi: 10.1021/acsphotonics.6b00953
e-issn: 2330-4022
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