OBSERVATION OF TIME-RESOLVED PICOSECOND STIMULATED PHOTON-ECHOES AND FREE POLARIZATION DECAY IN GAAS/ALGAAS MULTIPLE QUANTUM-WELLS

被引：95

作者：

WEBB, MD

CUNDIFF, ST

STEEL, DG

机构：

[1] Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.66.934

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report measurements of exciton dynamics in GaAs multiple-quantum-well structures at low temperature using three-pulse picosecond four-wave mixing. The time-resolved measurements of the emission show both a delayed signal (stimulated photon echo) and a prompt signal (free polarization decay) with different decay times. The results suggest that, in addition to the inhomogeneously broadened resonance, a homogeneously broadened resonance contributes to the optical response of the exciton.

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页码：934 / 937

页数：4

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