Analysis of the effects of external injection and diffusion of excited states on relaxation oscillations in lasers

Effects of external injection and diffusion of excited states on the dynamics of the directly pulse-modulated laser are analyzed theoretically by examining the characteristics of the equilibrium state of the laser oscillation according to the method of Lyapunov. The analogy between relaxation oscillations in the electronic circuit and those in the directly modulated laser is discussed by introducing an equivalent circuit.