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  • 1
    ISSN: 1432-0649
    Keywords: 42.55M ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The influence of depletable amplification, group velocity dispersion and self-phase modulation due to Kerr-type nonlinearity on pulse shaping in femtosecond pulse amplification has been calculated. With gain depletion which is typical for the last stage of multi-stage amplifiers, spectral broadening occurs which, under certain conditions, can be utilized for pulse compression. This spectral broadening as well as a predicted spectral shift is compared with experimental results.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0649
    Keywords: 42.60.Fc ; 42.55.Rz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A theoretical model of passive mode locking of colour-center lasers by an effective fast saturable absorber is presented where a hybrid saturation scheme is applied to consider the interaction of the mode-locked pulse with the gain medium. Intracavity group-velocity dispersion and Kerr-type nonlinearity are taken into account and their combined action can result in solition-like pulse shaping and shortening. Chirped steady-state solutions whose carrier frequency can be shifted with respect to the central frequency of the gain are found in a limited range of the parameters specifying the problem.
    Type of Medium: Electronic Resource
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