Abstract
The formation of annular light bullets during the filamentation of femtosecond optical vortices in a LiF crystal under conditions of anomalous group velocity dispersion is considered. Features of the spatiotemporal dynamics of pulses are described. Quantitative estimates of the parameters of light bullets are given. The mechanism of the formation of a light bullet in the first nonlinear focus is analyzed. Models of a stationary optical vortex and a slit beam are considered.
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Funding
This work was supported by the Russian Science Foundation, grant no. 18-12-00422 (Institute of Spectroscopy of the Russian Academy of Sciences, experimental measurements); and by the Russian Foundation for Basic Research, grant no. 18-02-00624 (Moscow State University, theoretical calculations).
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Translated by I. Obrezanova
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Vasiliev, E.V., Kandidov, V.P., Kompanets, V.O. et al. Formation of Annular Light Bullets in a Femtosecond Vortex Beam. Bull. Russ. Acad. Sci. Phys. 83, 1443–1449 (2019). https://doi.org/10.3103/S1062873819120281
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DOI: https://doi.org/10.3103/S1062873819120281