NONLINEAR OPTICAL PHENOMENA IN SEMICONDUCTOR-LASERS

Examples for nonlinear optical phenomena in semiconductor lasers are discussed. Within the framework of nonlinear optics, we present data of four-wave mixing within the active region of a semiconductor laser and demonstrate population pulsation as the microscopic process. We further present experimental and theoretical results on the nonlinear dynamics of time and frequency instabilities of semiconductor lasers with injected light, modulated current and external delayed feedback, respectively, and discuss these data with respect to the universal behavior of transition to chaos.