Exploiting hysteresis effect for electronic adjusting of fiber mode-locked laser

Here we investigate a hysteresis-based approach to adjust duration of the pulses generated inside modified eight-figure fiber cavity. Hysteresis phenomena appears while setting pumping powers of two amplifying fibers at both loops of the laser cavity. Exploiting hysteresis effect, we diminish a pulse duration from 81 ps to 49 ps and study temporal stability of the pulse trains.