Applied Physics B

, Volume 73, Issue 3, pp 287–290

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

  • A. Becker
  • N. Aközbek
  • K. Vijayalakshmi
  • E. Oral
  • C.M. Bowden
  • S.L. Chin
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

Authors and Affiliations

  • A. Becker
    • 1
  • N. Aközbek
    • 2
  • K. Vijayalakshmi
    • 1
  • E. Oral
    • 1
  • C.M. Bowden
    • 2
  • S.L. Chin
    • 1
  1. 1.Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval, Québec, Québec G1K 7P4, CanadaCA
  2. 2.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, USAUS