Gain spectroscopy of excitonic molecules and its dynamics in a ZnSe single quantum well

15 November 1996

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 54 (19) , 13932-13937
https://doi.org/10.1103/physrevb.54.13932

Abstract

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. © 1996 The American Physical Society.

Keywords

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