Scientific Library of Tomsk State University

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Filamentation of focused and collimated laser beams in liquids D. V. Apeksimov, O. A. Bukin, S. S. Golik [et.al.]

Contributor(s): Apeksimov, Dmitrij V | Golik, Sergej S | Zemlyanov, Alexander A | Kabanov, Andrej M | Kuchinskaya, Olesya I | Matvienko, Gennadij G | Oshlakov, Viktor K | Petrov, Aleksej V | Sokolova, Ekaterina B | Bukin, Oleg A | Khoroshaeva, Elena EMaterial type: ArticleArticleSubject(s): филаментация | лазеры | лазерное излучениеGenre/Form: статьи в журналах Online resources: Click here to access online In: Proceedings of SPIE Vol. 9680 : 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, June 22-26, 2015, Tomsk, Russian Federation. P. 96801X-1-96801X-7Abstract: Experimental results of investigations into the transformation of the spectral and spatial characteristics of femtosecond collimated and focused Ti:Sapphire-laser beams with wavelengths of 800 and 400 nm upon filamentation in continuous liquid media are presented. It is shown that broadening of the laser pulse spectrum due to phase self-modulation in the medium with a cubic nonlinearity depends on the pulse power and beam diameter. Dependences of the number of filaments, width of laser radiation spectrum, nonlinear focusing distance, and diameter of the filamentation region on the laser pulse power are measured. The existence of a relative power interval in which the explosive growth of the number of filaments occurs, is established. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Experimental results of investigations into the transformation of the spectral and spatial characteristics of femtosecond collimated and focused Ti:Sapphire-laser beams with wavelengths of 800 and 400 nm upon filamentation in continuous liquid media are presented. It is shown that broadening of the laser pulse spectrum due to phase self-modulation in the medium with a cubic nonlinearity depends on the pulse power and beam diameter. Dependences of the number of filaments, width of laser radiation spectrum, nonlinear focusing distance, and diameter of the filamentation region on the laser pulse power are measured. The existence of a relative power interval in which the explosive growth of the number of filaments occurs, is established. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

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