Post-filamentation high-intensive light channels formation upon ultrashort laser pulses self-focusing in air

Yu. E Geints; A. A. Ionin; D. V. Mokrousova; L. V. Seleznev; D. V. Sinitsyn; E. S. Sunchugasheva; A. A. Zemlyanov

doi:10.1117/12.2256006

13 January 2017 Post-filamentation high-intensive light channels formation upon ultrashort laser pulses self-focusing in air

Yu. E Geints, A. A. Ionin, D. V. Mokrousova, L. V. Seleznev, D. V. Sinitsyn, E. S. Sunchugasheva, A. A. Zemlyanov

Author Affiliations +

Proceedings Volume 10254, XXI International Symposium on High Power Laser Systems and Applications 2016; 102541F (2017) https://doi.org/10.1117/12.2256006
Event: XXI International Symposium on High Power Laser Systems and Applications, 2016, Gmunden, Austria

Abstract

Experimental and theoretical study of the post-filamentation stage of focused high-power Ti:Sa laser pulses in air is presented. Angular divergence of the laser beam, as well as angular and spatial characteristics of specific spatially localized light structures, the post-filament channels (PFCs), under different initial focusing conditions and laser beam energy are investigated. We show that PFC angular divergence is always less than that of the whole laser beam and tends to decrease with laser pulse energy increase and beam focal length elongation.

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Yu. E Geints, A. A. Ionin, D. V. Mokrousova, L. V. Seleznev, D. V. Sinitsyn, E. S. Sunchugasheva, and A. A. Zemlyanov "Post-filamentation high-intensive light channels formation upon ultrashort laser pulses self-focusing in air", Proc. SPIE 10254, XXI International Symposium on High Power Laser Systems and Applications 2016, 102541F (13 January 2017); https://doi.org/10.1117/12.2256006

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