Self-consistent theory of the gain linewidth for quantum-cascade lasers

被引：71
|
作者：
Banit, F [1 ]
Lee, SC
Knorr, A
Wacker, A
机构：
[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany
[2] Lund Univ, Inst Fys, S-22100 Lund, Sweden
来源：
APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 04期
关键词：
D O I：
10.1063/1.1851004
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The linewidth in intersubband transitions can be significantly reduced below the sum of the lifetime broadening for the involved states, if the scattering environment is similar for both states. This is studied within a nonequilibrium Green function approach here. We find that the effect is of particular relevance for a recent, relatively low doped, Terahertz quantum-cascade laser. (C) 2005 American Institute of Physics.
引用
收藏
页码：041108 / 1
页数：3
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