Self-consistent study of strained wurtzite GaN quantum-well lasers

The photon rate-equation formalism is used to evaluate the multi-mode photon density, the output lasing power, and the modulation frequency response in pseudomorphically-strained wurtzite GaN quantum-well lasers. The formalism is based on a self-consistent methodology that couples an envelope-function (or k·p) Hamiltonian with Poisson´s equation. From this approach, we consider (a) the band structure under the influence of large piezoelectric fields and with many-body effect; and (b) the stimulated and spontaneous emissions for each Fabry-Perot mode. Also the influence of carrier capture processes on the band structure and modulation response is studied by the generalized rate-equation