Interface phonon modes in quantum cascade lasers

被引：0
|
作者：
Yu, B
Cao, JC [1 ]
Feng, SL
机构：
[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2005年 / 22卷 / 09期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the interface phonon assisted transition in GaAs/AlGaAs quantum cascade lasers (QCLs) by using the transfer matrix method based on the dielectric continuum model. Electron eigenvalues and eigenstates are calculated by solving Schrodinger equation and the Poisson equation self-consistently. The AlAs-like and upper GaAs-like interface phonon modes contribute most of the scattering rate. Interface phonon modes couple strongly with electrons at E-2, and the magnitude of scattering rate between E-2 and E-1 is much larger than that between E-3 and E-1, which is helpful for the laser inversion between E-3 and E-2. The calculation can be easily applied to the design and simulation of QCLs.
引用
收藏
页码：2403 / 2406
页数：4
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