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Influence of intensity distribution of laser beam on the properties of nanoparticles obtained by laser ablation of solids in liquids

P. G. KUZMIN1, G. A. SHAFEEV1,*

Affiliation

  1. Wave Research Center of A.M. Prokhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov street, 119991 Moscow Russian Federation

Abstract

Control over the properties of nanoparticles obtained by laser ablation in liquids is experimentally studied via modulation of the beam intensity profile on the target. Mask projection scheme was used with either a copper laser (wavelength of 510.6 nm, pulse duration of 10 ns) or with a Ti:sapphire laser (wavelength of 800 nm and pulse duration of 200 fs). Si and ZnSe were chosen as target materials. Obtained nanoparticles were characterized using Transmission Electron Microscopy (TEM), optical absorption spectroscopy and photoluminescence. It was shown that that size of Si nanoparticles depends on the spatial profile of the laser beam..

Keywords

Laser ablation, Spectroscopy, Nanoparticles.

Submitted at: June 21, 2009
Accepted at: Feb. 27, 2010

Citation

P. G. KUZMIN, G. A. SHAFEEV, Influence of intensity distribution of laser beam on the properties of nanoparticles obtained by laser ablation of solids in liquids, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 3, pp. 491-494 (2010)