Rate Equation Analysis of Frequency Chirp in Optically Injection-Locked Quantum Cascade Lasers

被引：3
|
作者：
Wang, C. [1 ,2 ]
Grillot, F. [1 ]
Kovanis, V. I. [3 ,4 ]
Bodyfelt, J. D. [5 ]
Even, J. [2 ]
机构：
[1] Telecom Paristech, Ecole Natl Super Telecommun, CNRS LTCI, 46 Rue Barrault, F-75013 Paris, France
[2] Univ Europeenne Bretagne, CNRS FOTON, INSA, F-35708 Rennes 7, France
[3] Ohio State Univ, Elect Sci Lab, Columbus, OH 43212 USA
[4] Air Force Res Lab, Dayton, OH 45433 USA
[5] Massey Univ Albany, Auckland 0745, New Zealand
来源：
PHYSICS AND SIMULATION OF OPTOELECTRONIC DEVICES XXII | 2014年 / 8980卷
关键词：
quantum cascade laser; injection locking; frequency chirp; SEMICONDUCTOR-LASERS; ENHANCEMENT; BANDWIDTH; SUBJECT; LOCKING;
D O I：
10.1117/12.2037745
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The frequency chirp characteristics of an optically injection-locked quantum cascade laser are theoretically investigated. The key parameter chirp-to-power ratio (CPR) is analytically derived from a full rate equation model. The CPR value can be efficiently reduced by increasing optical injection strength, especially at modulation frequencies less than 10 GHz. In contrast to interband lasers, both positive and negative frequency detuning increase the CPR. Since the frequency detuning is also predicted to enhance the intensity modulation response, a trade-off is required in the optical injection to simultaneously obtain a large modulation bandwidth and low frequency chirp.
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收藏
页数：8
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