Dynamics of two-color fiber laser with intracavity difference frequency generation

We study the dynamics of a neodymium-doped fiber laser coupled to ytterbium-doped fiber laser via nonlinear crystal which is placed inside the resonator. The transient signals may present different profiles depending on several conditions (degree of coupling between both lasers, pump powers of each one, resonator length, etc.) In particular, an appropriate choice of working conditions makes possible to suppress relaxation oscillations and to shorten the time elapsed since the moment of pump switch-on till steady state.