Nonlinear optical response of Au and Ag nanoparticles doped polyvinylpyrrolidone thin films

被引：37

作者：

He, Tingchao ^{[1
]}

Wang, Changshun ^{[1
]}

Pan, Xu ^{[1
]}

Wang, Yilei ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

来源：

PHYSICS LETTERS A | 2009年 / 373卷 / 05期

基金：

美国国家科学基金会;

关键词：

Colloidal Au; Colloidal Ag; Z-scan; Nonlinear absorption coefficient; Nonlinear refractive index; SMALL METAL PARTICLES; COMPOSITE FILMS; SILVER NANOPARTICLES;

D O I：

10.1016/j.physleta.2008.12.002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Colloidal Au and colloidal Ag were prepared by chemical reaction method and the nonlinear optical properties of Au and Ag nanoparticles doped polyvinylpyrroliclone (PVP) composite films were investigated using Z-scan technique with 38 ps pulses at 532 nm. Open aperture Z-scan measurements indicated that both the AujPVP and Ag/PVP composite films exhibited reverse saturable absorption. Nonlinear absorption coefficients and third-order nonlinear refractive indices were determined. The mechanisms accounting for the process of nonlinear refractions were analyzed and the figures of merit W and T of the Au/PVP and Ag/PVP composite films were evaluated. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：592 / 595

页数：4

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