An improved nonlinear quantum-well (QW) laser model, which takes into accou
nt the effects of quantum capture and escape processes, is presented, based
on laser rate equations and Volterra theory. This model is further expande
d by proper parameter transform to include the effect of carrier diffusion
in the separate confinement heterostructure region, Various QW laser distor
tions have been evaluated using this model and compared with the results ob
tained from the previous model where the transport effects are absent. The
results shows that the effect of transport processes on laser dynamic nonli
nearity can be significant.