Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers

被引:75
作者
Khurgin, Jacob B. [1 ]
Dikmelik, Yamac [1 ]
Liu, Peter Q. [2 ]
Hoffman, Anthony J. [2 ]
Escarra, Matthew D. [2 ]
Franz, Kale J. [2 ]
Gmachl, Claire F. [2 ]
机构
[1] Johns Hopkins Univ, Dept Elect & Comp Engn, Baltimore, MD 21218 USA
[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
关键词
interface roughness; quantum cascade lasers;
D O I
10.1063/1.3093819
中图分类号
O59 [应用物理学];
学科分类号
摘要
A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is supported by the experimental evidence.
引用
收藏
页数:3
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