TIME-RESOLVED BALLISTIC ACCELERATION OF ELECTRONS IN A GAAS QUANTUM-WELL STRUCTURE

被引:28
作者
SHA, W
NORRIS, TB
SCHAFF, WJ
MEYER, KE
机构
[1] UNIV MICHIGAN,DEPT APPL PHYS,ANN ARBOR,MI 48109
[2] CORNELL UNIV,SCH ELECT ENGN,ITHACA,NY 14853
[3] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND
关键词
D O I
10.1103/PhysRevLett.67.2553
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have used femtosecond time-resolved optical-absorption spectroscopy to study the dynamics of high-field parallel transport of electrons in GaAs quantum wells. We have directly observed the ballistic acceleration of electrons from the band edge by measuring the nonequilibrium transient energy distribution of the electrons. The ballistic acceleration occurs on a 150-fs time scale.
引用
收藏
页码:2553 / 2556
页数:4
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