Abstract:
Recombination rates due to radiative and nonradiative processes and the rate of recombination induced by amplified luminescence have been determined for lasers based on an asymmetric InGaAs/GaAs/AlGaAs heterostructure with an ultrawide waveguide in the subthreshold region. It is shown that the quantum efficiency of luminescence is no less than 91.5% for the laser samples studied.