Applied Physics B

, Volume 110, Issue 1, pp 123–130

3D Raman bullet formed under filamentation of femtosecond laser pulses in air and nitrogen

Authors

  • Daria Uryupina
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
  • Nikolay Panov
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
  • Maria Kurilova
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
  • Anna Mazhorova
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
    • École Polytechnique de MontréalGénie Physique
  • Roman Volkov
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
  • Stepan Gorgutsa
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
    • Institut National de la Recherche Scientifique-EMT
  • Olga Kosareva
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
    • International Laser Center and Faculty of PhysicsLomonosov Moscow State University
Article

DOI: 10.1007/s00340-012-5261-9

Cite this article as:
Uryupina, D., Panov, N., Kurilova, M. et al. Appl. Phys. B (2013) 110: 123. doi:10.1007/s00340-012-5261-9

Abstract

Complex experimental study of spectral, spatial and temporal behaviors of the IR shifted component observed under filamentation of the collimated femtosecond laser beam (80 GW, 50 fs, 805 nm) in molecular gases showed that this component behaves like a Raman soliton. Namely, it is confined in all domains: (a) it propagates within the filament core, (b) it has a stable duration of 30 fs along the filament, and (c) its spectrum shifts as a whole from 820 to 870 nm on the distance of 2 m from the filament start. A simple model explaining the origin of anomalous group velocity dispersion in the plasma channel of a filament is suggested.

Copyright information

© Springer-Verlag Berlin Heidelberg 2012