Gain spectroscopy of excitonic molecules and its dynamics in a ZnSe single quantum well
Vladimir G. Kozlov, P. Kelkar, A. Vertikov +5 more
We demonstrate spectroscopically how optical gain is formed in an interacting system of excitons and biexcitons in a single ZnSe quantum well. The dynamics of gain formation are studied on a subpicosecond time scale in pump-probe experiments, revealing the influence of coherent effects and the impact of exciton-exciton and exciton-biexciton interactions. Spectrally resolved, polarization-dependent degenerate four-wave-mixing experiments further demonstrate how the excitonic many-body phenomena profoundly influence the nonlinear optical response in this II-VI semiconductor heterostructure. \textcopyright{} 1996 The American Physical Society.
Physical review. B, Condensed matter•Nov 15, 1996•27 citations