Applied Physics B

, Volume 70, Supplement 1, pp S133–S141

Minimization of dispersion in an ultrafast chirped pulse amplifier using adaptive learning

  • A. Efimov
  • M.D. Moores
  • B. Mei
  • J.L. Krause
  • C.W. Siders
  • D.H. Reitze
Invited paper

Abstract.

Minimizing residual frequency dispersion that accompanies pulse stretching, amplification, and recompression is an important consideration in ultrashort chirped-pulse amplifiers. Here we show how an adaptive learning algorithm can be used in conjunction with a pulse shaper to compensate for higher-order and nonlinear dispersion in a chirped-pulse amplifier. Using spectral blueshifting as a sensitive diagnostic for pulse shape, we implement a ‘learning loop’ comprised of the pulse shaper, strong field laser ionization, and a genetic algorithm to minimize dispersion through the amplifier. We verify our optimization results using frequency-resolved optical gating (FROG) measurements and also show theoretically and experimentally that spectral blueshifting is indeed a sensitive diagnostic for pulse shape, and specifically, for higher-order dispersion.

PACS: 42.65.R; 42.50.H; 33.80.R 

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • A. Efimov
    • 1
  • M.D. Moores
    • 1
  • B. Mei
    • 1
  • J.L. Krause
    • 2
  • C.W. Siders
    • 3
  • D.H. Reitze
    • 1
  1. 1.Physics Department, University of Florida, Gainesville, FL 32611, USA (Fax: +1-352/392-3591, E-mail: reitze@phys.ufl.edu)US
  2. 2.Quantum Theory Project, University of Florida, Gainesville, FL 32611, USAUS
  3. 3.Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093-0339, USAUS

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