Size and dielectric dependence of the third-order nonlinear optical response of Au nanocrystals embedded in matrices

被引：57

作者：

Ma, GH ^{[1
]}

Sun, WX

Tang, SH

Zhang, HH

Shen, ZX

Qian, SX

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

来源：

OPTICS LETTERS | 2002年 / 27卷 / 12期

关键词：

D O I：

10.1364/OL.27.001043

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The third-order nonlinear optical response of Au nanocrystals embedded in BaTiO3 and ZrO2 matrices was investigated through the off-resonance femtosecond optical Kerr effect. Compared with pristine films, the nonlinearity of composite films shows an enhancement that depends on the sizes of Au particles and the refractive index of the matrices. We performed a calculation based on Lorenz-Mie scattering theory to explain the experimental results. Additionally, the nonlinearity was optimized by determination of the values of the particle size and the refractive index of the matrix. (C) 2002 Optical Society of America.

引用

页码：1043 / 1045

页数：3

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