Applied Physics B

, Volume 74, Supplement 1, pp s279–s282 | Cite as

Adaptive compression of intense 250-nm-bandwidth laser pulses

  • F.L. Légaré
  • J.M. Fraser
  • D.M. Villeneuve
  • P.B. Corkum
Article

Abstract.

Self-phase modulation produced by propagation of a 50-fs laser pulse in a hollow-core fiber capillary filled with argon gas was used to broaden the bandwidth from 30 nm to 250 nm. A subsequent compressor utilizing a pair of gratings and cylindrical optics compressed the pulse to 12.5 fs. A liquid-crystal spatial light modulator (SLM) was placed in the compressor, and an evolutionary algorithm based on feedback from the second-harmonic signal was used to control the SLM and optimize the pulse duration. The algorithm increased the second-harmonic signal by a factor of two, indicating that it has substantially improved on the 12.5-fs pulse duration.

PACS: 42.60.-v; 42.65.Tg 

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • F.L. Légaré
    • 1
  • J.M. Fraser
    • 1
  • D.M. Villeneuve
    • 1
  • P.B. Corkum
    • 1
  1. 1.National Research Council of Canada, 100 Sussex Drive, Ottawa, Ont. K1A 0R6, CanadaCA

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