Modulation of the electronic properties of GaAs quantum wells induced by surface acoustic waves

被引：2

作者：

Santos, PV ^{[1
]}

Hey, R ^{[1
]}

机构：

[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

来源：

PHYSICA E | 2000年 / 7卷 / 3-4期

关键词：

quantum wells; surface acoustic waves;

D O I：

10.1016/S1386-9477(99)00383-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigated the modulation of the optical properties of GaAs-based structures by a surface acoustic wave (SAW) by microscopic measurements of reflectance and photoluminescence. We demonstrate that for photon energies away from electronic resonances, the modulation of the optical properties is associated with the strain field of the SAW (elastooptical mechanism). Close to the Eo resonance, the electrooptical modulation due to the SAW piezoelectric fields becomes important and leads to a spatial modulation of the photoluminescence intensity. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：559 / 562

页数：4

共 8 条

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