Third-order nonlinear optical response of colloidal gold nanoparticles prepared by sputtering deposition

被引：25

作者：

Castro, Hemerson P. S. ^{[1
]}

Wender, Heberton ^{[2
,3
]}

Alencar, Marcio A. R. C. ^{[1
]}

Teixeira, Sergio R. ^{[4
]}

Dupont, Jairton ^{[5
]}

Hickmann, Jandir M. ^{[1
]}

机构：

[1] Univ Fed Alagoas, Opt & Mat Grp, OPTMA, BR-57061970 Maceio, Brazil

[2] CNPEM, Brazilian Synchrotron Natl Lab LNLS, BR-13083970 Campinas, SP, Brazil

[3] Univ Fed Mato Grosso do Sul, Dept Phys, BR-79070900 Campo Grande, Brazil

[4] Univ Fed Rio Grande do Sul, Inst Phys, BR-91501970 Porto Alegre, RS, Brazil

[5] Univ Fed Rio Grande do Sul, Inst Chem, Lab Mol Catalysis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 18期

关键词：

HIGH-REPETITION-RATE; SILVER NANOPARTICLES; AU NANOPARTICLES; LASER-ABLATION; IONIC LIQUID; SUSCEPTIBILITY; SCATTERING;

D O I：

10.1063/1.4831679

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The nonlinear optical responses of gold nanoparticles dispersed in castor oil produced by sputtering deposition were investigated, using the thermally managed Z-scan technique. Particles with spherical shape and 2.6 nm of average diameter were obtained and characterized by transmission electron microscopy and small angle X-ray scattering. This colloid was highly stable, without the presence of chemical impurities, neither stabilizers. It was observed that this system presents a large refractive third-order nonlinear response and a negligible nonlinear absorption. Moreover, the evaluation of the all-optical switching figures of merit demonstrated that the colloidal nanoparticles prepared by sputtering deposition have a good potential for the development of ultrafast photonic devices. (C) 2013 AIP Publishing LLC.

引用

页数：7

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