High-power single-mode laser diodes based on carbon-doped quantum-well InGaAs/AlGaAs heterostructures

Emission parameters of single-mode laser diodes based on InGaAs/GaAs/AlGaAs heterostructures doped with carbon and grown by using the metallorganic vapour phase epitaxy (MOVPE) technique are studied. The obtained results show that maintaining a certain doping profile ensuring optimisation of series resistance and internal optical losses during all fabrication stages of the active element of a diode laser, provides for enhancement of the laser efficiency. Based on laser heterostructures studied in this paper, highly efficient single-transverse-mode laser diodes emitting 300 mW at 980 nm have been manufactured. (lasers)