Waveguide optical losses in InGaAs/AlAsSb quantum cascade laser

被引：5
|
作者：
Revin, D. G. [1 ]
Cockburn, J. W. [1 ]
Menzel, S. [1 ]
Yang, Q. [2 ]
Manz, C. [2 ]
Wagner, J. [2 ]
机构：
[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England
[2] Fraunhofer Inst Appl Solid State Phys, D-79108 Freiburg, Germany
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 04期
关键词：
D O I：
10.1063/1.2885720
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors present a technique for broadband study of the optical waveguides used for midinfrared quantum cascade lasers. This method allows insight into the waveguide properties and helps in improving the waveguide design. Using this method the waveguide losses in the whole range of waveguide transparency of about 1.8-9 Am have been found for a lambda similar to 4.4 mu m In(0.53)Ga(0.47)As/AlAs(0.56)Sb(0.44)/InP quantum cascade laser. The polarization dependence of waveguide losses in a quantum cascade laser is discussed. (c) 2008 American Institute of Physics.
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页数：4
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