GIANT ELECTROPLEOCHROISM IN GAAS-(AL,GA) AS HETEROSTRUCTURES - THE QUANTUM-WELL POCKELS EFFECT

被引：58

作者：

KWOK, SH ^{[1
]}

GRAHN, HT ^{[1
]}

PLOOG, K ^{[1
]}

MERLIN, R ^{[1
]}

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 80,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.69.973

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the biaxial response of photoluminescence to electric fields in GaAs quantum-well structures. For fields along [001], emission due to nominally forbidden excitons exhibits substantial differences between [110] and [110BAR] polarizations. Transitions which are allowed within the envelope-function formalism show no noticeable anisotropy. In terms of symmetry, our observations relate to the linear electro-optic (Pockels) effect. The field dependence of the anisotropy is unusual in that it decreases with increasing field. Results can be qualitatively accounted for by perturbative analyses.

引用

页码：973 / 976

页数：4

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