Applied Physics B

, Volume 76, Issue 5, pp 583–586

Measurement of filament length generated by an intense femtosecond laser pulse using electromagnetic radiation detection

Authors

  • S.A. Hosseini
    • Centre d’Optique, Photonique et Laser, Université Laval, Québec G1K 7P4, Canada
  • B. Ferland
    • Centre d’Optique, Photonique et Laser, Université Laval, Québec G1K 7P4, Canada
  • S.L. Chin
    • Centre d’Optique, Photonique et Laser, Université Laval, Québec G1K 7P4, Canada

DOI: 10.1007/s00340-003-1132-8

Cite this article as:
Hosseini, S., Ferland, B. & Chin, S. Appl Phys B (2003) 76: 583. doi:10.1007/s00340-003-1132-8

Abstract.

We present a new method to measure the length of a filament induced by the propagation of intense femtosecond laser pulses in air. We used an antenna to detect electromagnetic pulses radiated from multipole moments inside the filament oscillating at the plasma frequency. The results are compared with the values detected from the backscattered fluorescence induced by multiphoton ionization of nitrogen molecules excited inside the filament. The values are found to be in good agreement.

PACS: 42.65.Jx; 42.68.Ay; 42.68.Wt

Copyright information

© Springer-Verlag 2003