45 GHZ SELF-PULSATION WITH NARROW LINEWIDTH IN QUANTUM DOT FABRY-PEROT SEMICONDUCTOR LASERS AT 4,5 MICRO-M

Self-pulsation at 45 GHz repetition frequency has been demonstrated in 1.5 mu m monolithic single-section quantum dot Fabry-Perot semiconductor lasers without saturable absorber. The mode-beating exhibits a narrow linewidth below 100 kHz, demonstrating high phase correlation between these modes. Such modelocked lasers open ways to low timing-jitter components for clock recovery or millimetre-wave generation in wireless transmission applications.