OPTICAL ANISOTROPY DUE TO EXCITON POLARITONS IN AL1-XGAXAS-GAAS QUANTUM-WELLS

被引：6

作者：

BERZ, MW ^{[1
]}

HOUDRE, R ^{[1
]}

STEIGMEIER, EF ^{[1
]}

REINHART, FK ^{[1
]}

机构：

[1] PAUL SCHERRER INST ZURICH,CH-8048 ZURICH,SWITZERLAND

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 86卷 / 01期

关键词：

D O I：

10.1016/0038-1098(93)90245-I

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A strong anisotropy of the photoluminescence emission of high quality quantum wells parallel and orthogonal to the growth axis is demonstrated. This shows up as a series of impressively sharp photolaminescence lines (almost-equal-to 0.1 meV) which are only seen on the cleaved facet of growth interrupted single quantum wells, i.e. orthogonal to the growth axis. It is explained in terms of coupled exciton-photon modes called polaritons, which enhance the coupling to excitons in large QW areas with smooth interfaces. The different emission lines are attributed to distinct areas in the quantum well. Polariton effects for excitons in such finite areas are discussed by a semiclassical theory.

引用

页码：43 / 46

页数：4

共 17 条

[1]

AGRANOVI.VM, 1966, JETP LETT-USSR, V3, P223

[2] EXCHANGE INTERACTION AND POLARITON EFFECTS IN QUANTUM-WELL EXCITONS [J].