Post-filament self-trapping of ultrashort laser pulses

A. V. Mitrofanov, A. A. Voronin, D. A. Sidorov-Biryukov, G. Andriukaitis, T. Flöry, A. Pugžlys, A. B. Fedotov, J. M. Mikhailova, V. Ya Panchenko, A. Baltuška, A. M. Zheltikov

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Abstract

Laser filamentation is understood to be self-channeling of intense ultrashort laser pulses achieved when the selffocusing because of the Kerr nonlinearity is balanced by ionization-induced defocusing. Here, we show that, right behind the ionized region of a laser filament, ultrashort laser pulses can couple into a much longer light channel, where a stable self-guiding spatial mode is sustained by the saturable self-focusing nonlinearity. In the limiting regime of negligibly low ionization, this post-filamentation beam dynamics converges to a large-scale beam self-trapping scenario known since the pioneering work on saturable self-focusing nonlinearities.

Original languageEnglish (US)
Pages (from-to)4659-4662
Number of pages4
JournalOptics Letters
Volume39
Issue number16
DOIs
StatePublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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    Mitrofanov, A. V., Voronin, A. A., Sidorov-Biryukov, D. A., Andriukaitis, G., Flöry, T., Pugžlys, A., Fedotov, A. B., Mikhailova, J. M., Panchenko, V. Y., Baltuška, A., & Zheltikov, A. M. (2014). Post-filament self-trapping of ultrashort laser pulses. Optics Letters, 39(16), 4659-4662. https://doi.org/10.1364/OL.39.004659