Abstract

We discuss the difference in the dynamics of solid-state lasers mode locked by fast or slow saturable absorbers with and without solitonlike pulse shaping, i.e., negative group delay dispersion (GDD) and self-phase modulation (SPM). We present simple relations that indicate when the single pulse per cavity round trip will break up into longer multiple pulses due to the solitonlike pulse shaping. The breakup criterion is confirmed experimentally with a soliton mode-locked Nd:glass laser.

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