Continuous-Wave Electrically Pumped 1.55- $\mu$ m Edge-Emitting Platelet Ridge Laser Diodes on Silicon

We report the successful integration on silicon of small footprint, low-threshold electrically pumped edge-emitting lasers by a new approach incorporating microcleaving technology to produce 6-mum-thick platelet lasers with cleaved facets, microscale pick and place assembly to position them on the substrate, and diaphragm pressure solder bonding to attach/connect them permanently in place. InP-based ridge-waveguide platelet lasers integrated on silicon lase at 1550-nm continuous-wave to 55degC (pulsed to 80degC) with output powers as high as 26.8 mW, external differential quantum efficiencies as high as 81%, and threshold currents as low as 18 mA.