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

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

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Título Third-order nonlinear optical response of colloidal gold nanoparticles prepared by sputtering deposition
Autor Castro, Hermerson Pablo Silva
Santos, Heberton Wender Luiz dos
Alencar, Marcio André Rodrigues Cavalcanti de
Teixeira, Sergio Ribeiro
Dupont, Jairton
Hickmann, Jandir Miguel
Abstract 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.
Contido em Journal of applied physics. New York. Vol. 114, no. 18 (Nov. 2013), 183104, 7 p.
Assunto Colóides
Deposição por sputtering
Indice de refracao
Microscopia eletronica de transmissao
Nanofabricação
Nanoparticulas
Otica nao-linear
Ouro
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/96578
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