Applied Physics B

, Volume 70, Supplement 1, pp S119–S124

Feedback-controlled femtosecond pulse shaping

  • T. Brixner
  • A. Oehrlein
  • M. Strehle
  • G. Gerber

DOI: 10.1007/s003400000270

Cite this article as:
Brixner, T., Oehrlein, A., Strehle, M. et al. Appl Phys B (2000) 70(Suppl 1): S119. doi:10.1007/s003400000270

Abstract.

We describe the experimental implementation of feedback-optimized femtosecond laser pulse shaping. A frequency-domain phase shaper is combined with different pulse characterization methods and appropriate optimization algorithms to compensate for any phase deviation. In particular, bandwidth-limited, amplified laser pulses are achieved by maximizing the second-harmonic generation (SHG) of the shaped laser pulses with the aid of an evolutionary algorithm. Real-time measurement of the absolute phases is achieved with spectral interferometry where the reference pulse is characterized by FROG, the so-called TADPOLE method. Using the complete electric field as feedback, arbitrary laser pulse shapes can be optimally generated in two different ways. First, a local convergence algorithm can be used to apply reliable and accurate spectral chirps. Second, an evolutionary algorithm can be employed to reach specific temporal profiles.

PACS: 42.65.Re; 42.79.Hp; 42.60.-v

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • T. Brixner
    • 1
  • A. Oehrlein
    • 1
  • M. Strehle
    • 1
  • G. Gerber
    • 1
  1. 1.Physikalisches Institut, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany (Fax: +49-931/888-4906, E-mail: gerber@physik.uni-wuerzburg.de)DE