Acoustically driven storage of light in a quantum well

被引：264

作者：

Rocke, C ^{[1
]}

Zimmermann, S ^{[1
]}

Wixforth, A ^{[1
]}

Kotthaus, JP ^{[1
]}

Bohm, G ^{[1
]}

Weimann, G ^{[1
]}

机构：

[1] TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.78.4099

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The strong piezoelectric fields accompanying a surface acoustic wave on a semiconductor quantum well structure are employed to dissociate-optically generated excitons and efficiently trap the created electron hole pairs in the moving lateral potential superlattice of the sound wave. The resulting spatial separation of the photogenerated ambipolar charges leads to an increase of the radiative lifetime by orders of magnitude as compared to the unperturbed excitons. External and deliberate screening of the lateral piezoelectric fields triggers radiative recombination after very long storage times at a remote location on the sample.

引用

页码：4099 / 4102

页数：4

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