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Filamentation of collimated Ti:sapphire-laser pulses in water 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 | Mayor, A. Yu | Matvienko, Gennadij G | Petrov, Aleksej V | Sokolova, Ekaterina B | Bukin, Oleg A | Томский государственный университет Радиофизический факультет Кафедра оптико-электронных систем и дистанционного зондированияMaterial type: ArticleArticleSubject(s): филаментация | лазерное излучение | фемтосекундные импульсы | жидкостиGenre/Form: статьи в журналах Online resources: Click here to access online In: Proceedings of SPIE Vol. 9810 : XII International Conference on Atomic and Molecular Pulsed Lasers. P. 98100I-1-98100I-4Abstract: The results of experimental studies of the spatial characteristics of multiple filamentation terawatt femtosecond Ti:Salaser in water are presented. With an increase in initial power laser pulses increases the number of filaments, the length of the field is increased filamentation and reducing the length of the filaments have been shown. The distribution of the filaments in the longitudinal direction of the field of multiple filamentation has a maximum cross-sectional filament is shifted from the center to the periphery of the beam at the end region of filamentation. The minimum diameter of the beam on the track corresponds to the position of the maximum number of filaments. After the point of maximum impulse essentially loses energy in the initial direction of propagation. Upon reaching the pulse power 2 104 Pcr of multiple filamentation area is formed of a hollow cone, the apex directed to the radiation source.
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The results of experimental studies of the spatial characteristics of multiple filamentation terawatt femtosecond Ti:Salaser in water are presented. With an increase in initial power laser pulses increases the number of filaments, the length of the field is increased filamentation and reducing the length of the filaments have been shown. The distribution of the filaments in the longitudinal direction of the field of multiple filamentation has a maximum cross-sectional filament is shifted from the center to the periphery of the beam at the end region of filamentation. The minimum diameter of the beam on the track corresponds to the position of the maximum number of filaments. After the point of maximum impulse essentially loses energy in the initial direction of propagation. Upon reaching the pulse power 2 104 Pcr of multiple filamentation area is formed of a hollow cone, the apex directed to the radiation source.

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