Applied Physics B

, Volume 73, Issue 3, pp 287–290

Intensity clamping and re-focusing of intense femtosecond laser pulses in nitrogen molecular gas

Authors

  • A. Becker
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval, Québec, Québec G1K 7P4, Canada
  • N. Aközbek
    • U.S. Army Aviation and Missile Command, Weapons Sciences Directorate, Aviation and Missile Research, Development and Engineering Center, AMSAM-RD-WS-ST, Redstone Arsenal, Huntsville, AL 35898-5000, USA
  • K. Vijayalakshmi
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval, Québec, Québec G1K 7P4, Canada
  • E. Oral
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval, Québec, Québec G1K 7P4, Canada
  • C.M. Bowden
    • U.S. Army Aviation and Missile Command, Weapons Sciences Directorate, Aviation and Missile Research, Development and Engineering Center, AMSAM-RD-WS-ST, Redstone Arsenal, Huntsville, AL 35898-5000, USA
  • S.L. Chin
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval, Québec, Québec G1K 7P4, Canada
Rapid communication

DOI: 10.1007/s003400100637

Cite this article as:
Becker, A., Aközbek, N., Vijayalakshmi, K. et al. Appl Phys B (2001) 73: 287. doi:10.1007/s003400100637

Abstract

We present results of measurements of fluorescence spectra due to the interaction of a Ti:sapphire laser pulse with N2 molecules at different gas pressures and pulse energies. The analysis of the data together with the results of numerical simulations, using a propagation model, reveal signatures of the phenomena of intensity clamping and of re-focusing of the laser pulse at high gas pressure. The laser pulse energy for intensity clamping as a function of the gas pressure is determined.

PACS: 52.38.Hb; 42.65.Jx; 32.80.Rm

Copyright information

© Springer-Verlag 2001