Abstract
We first describe an interferometric method suitable for the mode-locking of diode lasers, where the amplifying medium provides both the gain and the phase nonlinearity. The amplifying medium is placed in interferometric reflectors used as nonlinear mirrors. Numerical simulations have shown that, in the presence of synchronous pumping, conditions can be found where low power oscillations are quenched and where an intense short pulse is stable. We next propose and analyze numerically an interferometric scheme for the reshaping and amplification of a mode-locked train of short laser pulses, based on a ring cavity containing a semiconductor laser amplifier. Pulse compression and amplification are predicted over a wide range of values of the linear phase shift between the cavity and pulse train. Best reshaping is achieved with the use of a low cavity finesse operated near laser threshold.
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