Open AccessNonlinear excitation of localized plasmon in one-dimensional atomic chain
Author(s) -
Haifeng Yin,
Mao Li
Publication year - 2016
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.65.087301
Subject(s) - plasmon , localized surface plasmon , surface plasmon resonance , resonance (particle physics) , excitation , physics , surface plasmon polariton , atomic physics , surface plasmon , field (mathematics) , molecular physics , optics , quantum mechanics , nanoparticle , mathematics , pure mathematics
At different frequencies of light pulse field, the coupling between plasmon resonance and electron transport of one-dimensional sodium atomic chain is investigated by using time-dependent density functional theory. Light pulse field, whose frequency is in about 0.8 eV range around the plasmon resonance point, can stimulate plasmon resonance of the system. Plasmon resonance intensity magnitude which is stimulated by these different frequency light pulse fields are in the same order of magnitude. The more closely the external field frequency approaches to plasmon resonance frequency, the larger plasmon resonance amplitude stimulated by the external field fields will be. With regard to the nonlinear excitation phenomenon of linear atomic chain plasmon, using a classical harmonic oscillator model, we gives a qualitative explanation.