Nonlinear optical properties of PbO-GeO2 films containing gold nanoparticles

被引：27
|
作者：
de Araujo, Cid B. [1 ]
Oliveira, Tamara R. [1 ]
Falcao-Filho, Edilson L. [1 ]
Silva, Davinson M. [2 ,3 ]
Kassab, Luciana R. P. [2 ]
机构：
[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
[2] Fac Tecnol Sao Paulo, BR-01124060 Sao Paulo, Brazil
[3] Escola Politecn USP, Dept Engn Sistemas Eletron, BR-05508900 Sao Paulo, Brazil
来源：
JOURNAL OF LUMINESCENCE | 2013年 / 133卷
关键词：
Metal-dielectric composites; Gold nanoparticles; Localized surface plasmons; Enhanced nonlinearity; SILVER;
D O I：
10.1016/j.jlumin.2011.09.034
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The third-order susceptibility of glassy PbO-GeO2 films containing gold nanoparticles (NPs) was investigated in the pico- and sub-picosecond regimes. The nonlinear refractive indices, n(2)=(6 +/- 1) x 10(-10) cm(2)/W measured at 532 nm and n(2)=(10 +/- 2) x 10(-13) cm(2)/W at 800 nm, are larger than the values obtained for films without gold NPs by more than one order of magnitude. On the other hand, because the films were heat-treated in an oxygen atmosphere, the value of the two-photon absorption coefficient at 800 nm was reduced by two orders of magnitude in comparison with previous report. The new results demonstrate the large influence of the gold NPs and the fabrication procedure on the optical response of the samples. (c) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：180 / 183
页数：4
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