Abstract
Systematic numerical study of near-infrared radiation formed during filamentation in air revealed the formation of robust light bullet first registered in the experiment (Chen et al. in Appl Phys B 91:219, 2008). The near-infrared light bullet propagates along the filament axis with the divergence <1 mrad and the quasi-constant duration of ~30 fs. The central wavelength of the bullet gradually increases from 860 to 900 nm during the propagation. The results of our numerical simulation are in agreement with the experiments (Chen et al. in Appl Phys B 91:219, 2008; Uryupina et al. in Appl Phys B 110:123, 2013).
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Acknowledgments
This work is partially supported by Russian Foundation for Basic Research (Grants 15-02-99630, 15-32-20966, 14-02-00979, 14-22-02021, 14-02-31379), the Council of RF President for Support of Young Scientists (Grant MK-4895.2014.2), RF President Grant for Leading Scientific Schools (Grant NSh-3796.2014.2) and Dynasty Foundation. S.L. Chin thanks Canada Research Chair.
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Panov, N.A., Shipilo, D.E., Andreeva, V.A. et al. Robust near-infrared light bullet in 800-nm femtosecond light filaments in air. Appl. Phys. B 120, 383–387 (2015). https://doi.org/10.1007/s00340-015-6180-3
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DOI: https://doi.org/10.1007/s00340-015-6180-3