Exciton saturation in room temperature GaAs/AlGaAs multiple quantum wells

被引：13

作者：

Holden, TM

Kennedy, GT

Cameron, AR

Riblet, P

Miller, A

机构：

[1] J. F. Allen Research Laboratories, School of Physics and Astronomy, University of St. Andrews, St Andrews, Fife

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 07期

关键词：

D O I：

10.1063/1.119694

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report time resolved studies of optically induced circular dichroism in room temperature GaAs/AlGaAs multiple quantum wells to resolve spin-dependent and spin-independent contributions to exciton saturation. Phase-space filling and Coulomb contributions were separated by spin dependence while the effects of broadening and screening were distinguished using different pulse bandwidths. Bound and free carrier contributions were compared bq observing the temporal dependence of the circular dichroism on femtosecond timescales, The spin independent contribution to exciton saturation was found to be independent of whether the carriers were bound or free. (C) 1997 American Institute of Physics.

引用

页码：936 / 938

页数：3

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