Top grating index-coupled distributed feedback quantum cascade lasers

被引：74
作者：
Carras, M. [1 ]
Garcia, M. [1 ]
Marcadet, X. [1 ]
Parillaud, O. [1 ]
De Rossi, A. [2 ]
Bansropun, S. [2 ]
机构：
[1] Alcatel Thales III V Lab, F-91767 Palaiseau, France
[2] Thales Res & Technol, F-91767 Palaiseau, France
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 01期
关键词：
D O I：
10.1063/1.2950086
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the modeling and design of top grating distributed feedback (DFB) quantum cascade lasers (QCLs). A low loss, index-coupled, DFB design that is very robust against technological spreads is proposed. Strong DFB coupling conditions are obtained while maintaining a high laser output power. Following this design, DFB QCL lasers with InP cladding layers and InGaAs/AlInAs active regions have been fabricated. Room temperature monomode QCLs with 30 dB side mode suppression ratios are demonstrated over a 4-8 mu m wavelength range. (c) 2008 American Institute of Physics.
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页数：3
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