Investigation of Spatial Hole Burning and Linewidth Enhancement Factor Impact on Distributed-Feedback Quantum Cascade Lasers Dynamics

被引：0
|
作者：
Zaminga, Sara [1 ]
Columbo, Lorenzo [2 ]
Silvestri, Carlo [3 ]
Gioannini, Mariangela [2 ]
Grillot, Frederic [1 ]
机构：
[1] Inst Polytech Paris, LTCI Telecom Paris, Palaiseau, France
[2] Politecn Torino, Dipartimento Elettron & Telecomunicaz, Turin, Italy
[3] Univ Queensland, Sch Elect Engn & Comp Sci, Brisbane, Qld, Australia
来源：
PHYSICS AND SIMULATION OF OPTOELECTRONIC DEVICES XXXII | 2024年 / 12880卷
关键词：
Quantum Cascade Laser; Distributed-feedback; Effective Semiconductor Maxwell-Bloch Equations; Coupled-mode theory; Linewidth Enhancement Factor; Spatial Hole Burning;
D O I：
10.1117/12.3001622
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：
In this manuscript, we employ a time-domain traveling-wave model with a coupled-mode theory to characterize the dynamic behavior of a mid-Infrared (MIR) Quantum Cascade Laser (QCL) in the Distributed-Feedback (DFB) configuration. Our investigation underscores the crucial influence of the linewidth enhancement factor (LEF) and spatial hole burning (SHB) on the single-mode behavior of DFB QCLs. Disregarding these factors leads to an overestimation of the range of pump currents granting single-mode emission and results in an inaccurate simulation of the multimodal dynamics of DFB QCLs. The numerical simulations presented in this work closely align with experimental observations, specifically focusing on a DFB QCL operating at a wavelength of 9.34 mu m.
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页数：7
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