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

Becker A., Akozbek N., Vijayalakshmi K., ORAL E. N., Bowden C., Chin S.

APPLIED PHYSICS B-LASERS AND OPTICS, cilt.73, sa.3, ss.287-290, 2001 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 3
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1007/s003400100637
  • Dergi Adı: APPLIED PHYSICS B-LASERS AND OPTICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.287-290
  • İstanbul Üniversitesi Adresli: Evet

Özet

We present results of measurements of fluorescence spectra due to the interaction of a Ti:sapphire laser pulse with N(2) 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.