Quantum-cascade lasers with heterogeneous cascades: Multiple-wavelength operation

被引：1
|
作者：
Gmachl, Claire [1 ]
Sivco, Deborah L. [1 ]
Colombelli, Raffaele [1 ]
Capasso, Federico [1 ]
Mosely, Trinesha S. [1 ,2 ]
Straub, Axel [1 ]
Baillargeon, James N. [1 ]
Cho, Alfred Y. [1 ]
机构：
[1] Bell Laboratories, Lucent Technologies, Murray Hill, NJ, United States
[2] Southern University, A and M College, Baton Rouge, LA, United States
来源：
Optics and Photonics News | 2001年 / 12卷 / 12期
关键词：
Electric field effects - Electric resistance - Etching - Spectrum analysis;
D O I：
10.1364/OPN.12.12.000024
中图分类号：
学科分类号：
摘要：
The quantum-cascade (QC) laser with heterogeneous cascades were discussed. It was found that in this type of heterogeneous cascade, it was not necessary to adjust the design electric field of the two stacks to match each other and each substack was apportioned the appropriate fraction of the total applied bias. The analysis showed that the low-temperature threshold current densities were 2.67 and 2.70 kA cm2.
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