INTERFACE-PHONON-ASSISTED TRANSITIONS IN QUANTUM-WELL LASERS

Interface-phonon-assisted transitions an shown to be important in dete rmining the rates for bound-bound transitions as well as the optimum q uantum-well parameters for recently proposed quantum-well lasers inclu ding the tunneling injection laser and the quantum cascade laser. In p articular, it is demonstrated through the use of the dielectric contin uum model for interface and confined phonons that the exploitation of interface-phonon-assisted transitions offers a means of maximizing key transition rates and thus of optimizing the performance of both the t unnel injection laser and the quantum cascade laser.