Numerical study of light-current characteristics of laser diode with an ultrathin waveguide under high drive current using the energy balance model

For the first time, the use of an energy balance model including a saturation of drift velocity was proposed for the simulation of high-power laser heterostructure with an ultrathin waveguide. The limitations of the drift-diffusion model associated with the local dependence of the electron mobility on the electric field are shown. Higher internal optical losses are obtained using energy-balance model.