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Atmospheric and Oceanic Optics

, Volume 31, Issue 6, pp 619–625 | Cite as

Diffraction-Beam Optics of Filamentation: II–Diffraction-Beam Pattern of Laser Pulse Filamentation

  • Yu. E. GeintsEmail author
  • A. A. Zemlyanov
  • O. V. Minina
Nonlinear Optics
  • 3 Downloads

Abstract

Based on the diffraction-ray representation of nonlinear propagation of laser pulses, some examples of visualization of the filamentation of high-power femtosecond laser pulses in air are considered in the form of evolutionary paths of diffraction beams and light tubes. It is ascertained that a filament is supported by the light energy of the part of the beam which is inside a beam tube with the initial peak power higher than the critical power of self-focusing. This light tube is an energy reservoir for the filament. The light beam periphery holds the diffraction-beam tube which includes the filament by means of formation of a “diffractive” waveguide.

Keywords

femtosecond laser pulses self-focusing filamentation diffraction ray diffraction-beam tube 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • Yu. E. Geints
    • 1
    Email author
  • A. A. Zemlyanov
    • 1
  • O. V. Minina
    • 1
  1. 1.V.E. Zuev Institute of Atmospheric Optics, Siberian BranchRussian Academy of SciencesTomskRussia

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