Open AccessNegative electron energy loss and second-harmonic emission of nonlinear nanoparticles
Author(s) -
Jinying Xu,
Xiangdong Zhang
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.022999
Subject(s) - multipole expansion , physics , electron , harmonics , optics , scattering , high harmonic generation , harmonic , spheres , nonlinear system , nonlinear optics , electron energy loss spectroscopy , second harmonic generation , radiation , electromagnetic radiation , electron scattering , atomic physics , computational physics , quantum mechanics , laser , voltage , astronomy
A fast and general technique to investigation the interaction between a fast electron and nonlinear materials consisting of centrosymmetric spheres is presented by means of multiple scattering of electromagnetic multipole fields. Two kinds of new effect, the negative electron energy loss caused by the second-harmonic field and the second-harmonic Smith-Purcell radiation using finite chain of nonlinear spheres, are predicted for the first time. It is shown that these new effects can be probed by the electron energy loss spectrum, suggesting their possible applications in tunable light sources for the second-harmonic generation.