TIME-RESOLVED RAMAN-SCATTERING MEASUREMENT OF ELECTRON-OPTICAL PHONON INTERSUBBAND RELAXATION IN GAAS QUANTUM-WELLS

被引：2

作者：

TATHAM, MC ^{[1
]}

RYAN, JF ^{[1
]}

FOXON, CT ^{[1
]}

机构：

[1] PHILIPS RES LABS,REDHILL RH1 5HA,SURREY,ENGLAND

来源：

SURFACE SCIENCE | 1990年 / 228卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(90)90273-B

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have measured the lifetime of electronic intersubband excitations by emission of longitudinal optical phonons in GaAsAlGaAs quantum wells using time-resolved anti-Stokes inelastic light scattering. We find the lifetime of electrons in the n=2 level of a 146 Å well to be ≤ 1 ps which is in excellent agreement with theoretical calculations of two-dimensional electron-phonon interactions. © 1990.

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页码：127 / 130

页数：4

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