ActiveQswitching in a GaAs/AlGaAs multiquantum well laser with an intracavity monolithic loss modulator

摘要

ActiveQswitching in a GaAs/AlGaAs multiquantum well laser with an intracavity electroabsorption monolithic loss modulator is demonstrated. In this device, an efficient loss modulation is achieved through the quantum confined Stark effect in a modulator section and the enhanced carrier induced band shrinkage effect in an optical amplifier section. It is found that a picosecond pulse as narrow as 18.6 ps full width at halfhyphen;maximum is generated and a high repetition rate of more than 3 GHz is obtained.