Applied Physics B

, Volume 80, Issue 2, pp 221–225

Ultrabroadband continuum generated in air (down to 230 nm) using ultrashort and intense laser pulses

Authors

    • Centre d’Optique, Photonique et Laser and Département de Physiquede Génie Physique et d’Optique Université Laval
  • W. Liu
    • Centre d’Optique, Photonique et Laser and Département de Physiquede Génie Physique et d’Optique Université Laval
  • Q. Luo
    • Centre d’Optique, Photonique et Laser and Département de Physiquede Génie Physique et d’Optique Université Laval
  • S.L. Chin
    • Centre d’Optique, Photonique et Laser and Département de Physiquede Génie Physique et d’Optique Université Laval
Article

DOI: 10.1007/s00340-004-1689-x

Cite this article as:
Théberge, F., Liu, W., Luo, Q. et al. Appl. Phys. B (2005) 80: 221. doi:10.1007/s00340-004-1689-x

Abstract

We present results on supercontinuum generation extended up to 230 nm in air during the propagation of a powerful femtosecond laser pulse. The broad supercontinuum generated in air is contributed by self-phase modulation and self-steepening of the fundamental laser pulse, the third-harmonic pulse and their interaction. In particular, the strong interaction between the fundamental and the third-harmonic pulses leads to broad and efficient continuum generation of the third-harmonic pulse itself. The spectrum of the third-harmonic generated in air extends over several tens of nm and overlaps with the shorter wavelength extent of the fundamental continuum.

Copyright information

© Springer-Verlag 2004