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Proceedings Paper

Size dependence of the behavior of hyper-Rayleigh scattering for silver nanoparticle
Author(s): Gang Wang; Yu Zhang; Yiping Cui; Muyun Duan; Mi Liu
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Paper Abstract

The extinction spectra as well as Hyper-Rayleigh scattering (HRS) signals from three volume silver nanoparticles with aggregate effect have been measured. The morphology of silver aggregates is observed as chain-like aggregate by TEM. Strong enhancements of HRS signals are found when aggregation occurs, and reversed enhancement factor versus particle size is found. The observed size dependence of the second harmonic generation from silver nanoparticle with aggregates effect is explained by assuming surface contribution. Analysis on the extinction spectra and the HRS responses suggests two mechanisms may participate the surface contribution. The first one is arising from the breaking of centrosymmetry at the particles' surface. Another one is the enhanced electromagnetic (EM) field near the particles' surface.

Paper Details

Date Published: 28 January 2005
PDF: 7 pages
Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, (28 January 2005); doi: 10.1117/12.574933
Show Author Affiliations
Gang Wang, Southeast Univ. (China)
Yu Zhang, Southeast Univ. (China)
Yiping Cui, Southeast Univ. (China)
Muyun Duan, Southeast Univ. (China)
Mi Liu, Southeast Univ. (China)

Published in SPIE Proceedings Vol. 5646:
Nonlinear Optical Phenomena and Applications
Qihuang Gong; Yiping Cui; Roger A. Lessard, Editor(s)

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