LINEAR AND CIRCULAR POLARIZATIONS OF EXCITON LUMINESCENCE IN GAAS/ALXGA1-XAS QUANTUM-WELLS

被引：11

作者：

FROMMER, A ^{[1
]}

COHEN, E ^{[1
]}

RON, A ^{[1
]}

PFEIFFER, LN ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.48.2803

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cw, linearly and circularly polarized photoluminescence excitation spectra (P(lin) and P(cir)), are studied for (e1:hh1) excitons of undoped GaAs/AlxGa1-xAs quantum wells. Monitoring in the high-energy range of the luminescence, pronounced 1S and 2S polarization-preserving bands are observed. They are shown to be due to LA-phonon-assisted relaxation of delocalized excitons. For the low-energy range P(lin) is similar to 0 and a circular polarization reversal is observed, resulting from exciton-exciton scattering.

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页码：2803 / 2806

页数：4

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