FEMTOSECOND COHERENT SPECTROSCOPY OF ETCHED QUANTUM WIRES

被引：20

作者：

MAYER, EJ

WHITE, JO

SMITH, GO

LAGE, H

HEITMANN, D

PLOOG, K

KUHL, J

机构：

[1] Max-Planck-Institut für Festkörperforschung, D-70506 Stuttgart

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.49.2993

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the homogeneous linewidth of an excitonic resonance in a quantum wirer Transient time-integrated and time-resolved four-wave-mixing experiments are used to obtain the homogeneous linewidth by measuring the dephasing time. A biexponential decay is observed and attributed to the presence of free and localized excitons. The homogeneous linewidth for both species is measured as a function of temperature and excitation density. Quantum beats are observed due to interference between the m = 1 and m = 2 center-of-mass-quantized n = 1 heavy-hole exciton states.

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页码：2993 / 2996

页数：4

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