INVESTIGATION OF CARRIER TRANSPORT EFFECTS IN MULTIPLE-QUANTUM-WELL LASERS

The effect of carrier transport on the small-signal dynamics of multip le-quantum-well lasers is investigated both theoretically and experime ntally. The dependence of modulation bandwidth on quantum-well number is examined. Based on the phenomenological model, it is shown that the re is an optimum value of the ratio between carrier quantum capture ti me and escape time, at which the modulation bandwidth of multiple-quan tum-well lasers achieves maximum. The theoretical results agree well w ith experimental data. (C) 1995 American Institute of Physics.