Chirped InAs/InP quantum-dash laser with enhanced broad spectrum of stimulated emission

摘要

We report on the demonstration of 50?nm (full-width at half-maximum) broadband stimulated emission from a chirped AlGaInAs barrier thickness multi-stack InAs/InP quantum dash (Qdash) laser. The 2?μm wide uncoated Fabry-Perot (FP) ridge-waveguide laser exhibits a total power of 0.18?W, corresponding to an average spectral power density of 3.5?mWm, under pulsed current conditions. Intentional extended inhomogeneity across the Qdash stacks have been attributed to the enhancement of broadband emission.