GAIN CALCULATION IN A QUANTUM-WELL LASER SIMULATOR USING AN 8 BAND K-CENTER-DOT-P MODEL

Effects of non-parabolicity and band-warping of the energy dispersion are entered in a quantum well laser simulator (MINILASE-II), which sel f-consistently solves Schodinger's equation, Poisson's equation, the d rift diffusion equations, and the photon rate equations. An eight band k . p model is used to determine the electronic band structure for a strained-layer In.2Ga.8As/Al.1Ga.9As system. The kp calculation is per formed independently of the laser simulator, and exported to MINILASE- II in the form of a density of states and an energy dependent averaged momentum matrix element. The results obtained for the gain and modula tion response are compared to those obtained from a parabolic band mod el with a constant matrix element.