Timehyphen;resolved phononhyphen;assisted stimulated emission in AlGaAshyphen;GaAs quantum wells

摘要

Timehyphen;resolved photoluminescence of phononhyphen;assisted stimulated emission is reported for the first time. The temporal characteristics of the phononhyphen;assisted stimulated emission are distinct from the stimulated emission from the quantum states. The phononhyphen;assisted recombination is always delayed in time with respect to the confined particle transitions and has a larger full width at half maximum than the confined particle transitions. The dynamics of stimulated phonon emission along with the smaller transition probability for the phononhyphen;assisted process may account for the distinct temporal characteristics. Data are presented on the emission intensity versus wavelength versus time from which the dependence of the delay on excitation intensity is extracted.