Electron-electron scattering in far-infrared quantum cascade lasers

被引：48
|
作者：
Hyldgaard, P
Wilkins, JW
机构：
[1] Department of Physics, Ohio State University, Columbus, OH 43210-1106
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.53.6889
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A large depolarization shift indicates a strong nonequilibrium intersubband electron-electron scattering (Gamma) in tunneling structure. For a far-infrared subband separation Delta similar to 10 meV, the rate Gamma scales with the upper-subband occupation and is never significantly reduced by screening. Despite this nonradiative decay a finite population inversion can be maintained. Finally, the applied bias changes the wave-function symmetry so as to cause a dramatic variation of the electron-electron scattering rate.
引用
收藏
页码：6889 / 6892
页数：4
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