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7 June 2005 Nonlinear optical properties of Ag nanoparticles prepared by laser ablation in liquids
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Proceedings Volume 5850, Advanced Laser Technologies 2004; (2005)
Event: Advanced Laser Technologies 2004, 2004, Rome and Frascati, Italy
Optical properties and third order optical nonlinearity of liquid metal colloids prepared by laser ablation in water and ethanol are investigated. It was found out that water colloids took stable state after partial sedimentation with changing of ONL sign during sedimentation process. The optical absorption spectra are interpreted within the framework of Drude model for metallic particles with taking into account the effect of nanoparticles sizes on optical properties. Stable state is explained by colloid of small Ag particles with presumable oxide shell. The sizes of small Ag particles were calculated and nonlinear optical absorption parameters were measured by z-scan technique.
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V. A. Karavanskii, A. V. Simakin, V. I. Krasovskii, and P. V. Ivanchenko "Nonlinear optical properties of Ag nanoparticles prepared by laser ablation in liquids", Proc. SPIE 5850, Advanced Laser Technologies 2004, (7 June 2005);

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