Rate equation analysis of injection-locked quantum cascade lasers

被引：32

作者：

Wang, Cheng ^{[1
]}

Grillot, Frederic ^{[2
]}

Kovanis, Vassilios ^{[3
,4
]}

Even, Jacky ^{[1
]}

机构：

[1] Univ Europeenne Bretagne, INSA, CNRS, FOTON, F-35708 Rennes, France

[2] Ecole Natl Super Telecommun Bretagne, Telecom Paristech, CNRS, LTCI, F-75013 Paris, France

[3] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA

[4] Ohio State Univ, Electrosci Lab, Columbus, OH 43212 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 06期

关键词：

SEMICONDUCTOR-LASER; RECENT PROGRESS; MODULATION; ENHANCEMENT; RESONANCE; SUBJECT;

D O I：

10.1063/1.4790883

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The modulation properties of optical injection-locked quantum cascade lasers (QCLs) are investigated theoretically via a simple low dimensional rate equation model. It is found that both strong injection level and positive optical frequency detuning increase the modulation bandwidth, while a large linewidth enhancement factor (LEF) contributes to the enhancement of the peak magnitude in the intensity modulation (IM) response. As opposed to conventional injection-locked interband lasers, it is demonstrated that no dip occurs in the QCL's IM response, which is beneficial for a series of broadband microwave photonic applications. Computations also show that the value of the LEF can critically modify both the locking and stability regions on the optical frequency detuning injection level map. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4790883]

引用

页数：6

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