Phase resetting in the Yamada model of a Q-switched laser

Phase resetting is a technique used to investigate how the phase of an oscillating system is altered due to an external perturbation. In this work we investigate the effect of external perturbations on a Q-switched laser, modelled by the Yamada equations. Using a dynamical systems approach, we present phase transition curves (PTCs) for perturbations in the laser intensity and the gain, and show how the phase of the reset oscillations are affected by the size of the perturbation, and the time at which it is applied.