Vol. 29, issue 12, article # 3

Geints Yu.E., Zemlyanov A.A., Ionin A.A., Mokrousova D.V., Seleznev L.V., Sunchugasheva E.S. Study of characteristics of intense light channels at postfilamentation stage of evolution of ultrashort laser radiation. // Optika Atmosfery i Okeana. 2016. V. 29. No. 12. P. 1023–1028 [in Russian].
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Abstract:

We present the results of our experimental and numerical studies of the multifilamentation of high-intensive pulse titanium-sapphire laser radiation (740 nm) in air. The postfilamentation stage of pulse propagation as specific spatially localized light structures is investigated. The angular divergence of postfilamentation channels is studied under different initial laser beam focusing. The threshold distance for the re-filamentation of postfilamentation channels in a glass plate is measured.

Keywords:

ultrashort laser radiation, self-focusing, filamentation, postfilamentation self-channeling

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