Hyper-Rayleigh scattering and hyper-Raman scattering of dye-adsorbed silver nanoparticles induced by a focused continuous-wave near-infrared laser

被引：41

作者：

Itoh, T

Ozaki, Y

Yoshikawa, H ^{[1
]}

Ihama, T

Masuhara, H

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Frontier Res Ctr, Suita, Osaka 5650871, Japan

[3] Kwansei Gakuin Univ, Dept Chem, Sch Sci & Technol, Sanda, Hyogo 6691337, Japan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 08期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.2172733

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report that hyper-Rayleigh scattering, surface-enhanced hyper-Raman scattering, and two-photon excited luminescence occur intermittently by focusing a continuous-wave near-infrared (cw-NIR) laser into a colloidal silver solution including rhodamine 6G (R6G) and sodium chloride (NaCl). On the other hand, continuous hyper-Rayleigh scattering is observed from colloidal silver free from R6G and NaCl, demonstrating that hyper-Raman scattering and two-photon excited luminescence are attributed to R6G and their intermittent features are dependent on the colloidal dispersion. These results suggest that the cw-NIR laser has three roles; the source of the nonlinear response, optical trapping of nanoparticles, and making nanoparticle aggregates possessing the high activity for the nonlinear response.

引用

页数：3

共 43 条

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