High power quantum cascade lasers operating at room temperature

被引：0
|
作者：
Razeghi, M [1 ]
Slivken, S [1 ]
机构：
[1] Northwestern Univ, Dept Elect & Comp Engn, Ctr Quantum Devices, Evanston, IL 60208 USA
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2003年 / 42卷
关键词：
quantum cascade lasers;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, some key design and technology issues for development of high power quantum cascade lasers are discussed. The scaling of power output with the number of emitting stages is shown. As part of this work, high power, 75-stage, lambda = 9 mum lasers have been demonstrated with a peak power of 7 W at room temperature. This power is a direct result of high quality material growth and a low loss waveguide design. Similar results are demonstrated at a shorter wavelength (lambda = 6.1 mum) utilizing a strain-balanced active region/injector design. For a 30-stage structure, 2 W peak power and 250 mW average power have been demonstrated at room temperature. Lastly, a timeline comparison of QCL laser performance is presented in terms of room temperature threshold current density and peak output power for various groups.
引用
收藏
页码：S637 / S641
页数：5
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