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.
引用
收藏
页码：127 / 130
页数：4
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