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The theory of additive pulse mode locking (APM) is developed in closed form under a linearization approximation. The pulse parameters are determined in terms of the gain, the gain dispersion, the group-velocity dispersion, and the self-phase modulation. Stability regimes are established. Various possible configurations of laser systems that can produce APM are presented. Some of them permit single-cavity realizations that may not require interferometric length stabilization circuits. In general, the results are applicable to a wide range of fast saturable absorber mode-locked systems.
Haus et al. (Tue,) studied this question.