垂直腔面发射激光器工作电流—输出光功率强度模型参数估计方法的改进
总结
针对VCSEL的LI经验公式,提出了一种利用激光器稳态输出功率方程构建的改进模型.在该模型中,考虑了载流子数、载流子复合寿命等参数对输出功率的影响.仿真结果显示,改进后LI模型曲线和实测数据之间的均方误差值比仅考虑激光器偏置电流受激光器温度影响的LI模型曲线,在相同算法条件下降低了约1.61 dB,且能在其他环境温度下更好地建模.
本研究仅考虑了激光器温度、主要结构参数对输入电流的影响,忽略了温度对于激光器电压的影响,会导致误差的产生,从而影响模型的精度.
参考文献:
[1]Entezam S,Zarifkar A,Sheikhi M H.Thermal equivalent circuit model for coupledcavity surfaceemitting lasers [J].IEEE Journal of Quantum Electronics,2015,51(4):2400108.
[2]Hangauer A,Chen J,Amann M C.Verticalcavity surfaceemitting laser lightcurrent characteristic at constant internal temperature [J].IEEE Photonics Technology Letters,2011,23(18):1295-1297.
[3]Mena P V,Morikuni J J,Kang S M,et al.A simple rateequationbased thermal VCSEL model [J].Journal of Lightwave Technology,1999,17(5):865-872.
[4]Daubenschüz M,Michalzik R.Efficient experimental analysis of internal temperatures in VCSELs [C].Proceedings of Conference on Lasers and ElectroOptics Europe & European Quantum Electronics Conference,Munich:IEEE,2017.
[5]Fatt Y S.Thermal effects in InAs/GaAs quantum dot vertical cavity surface emitting lasers [C].Proceedings of the 10th IEEE International Conference on Semiconductor Electronics,Kuala Lumpur:IEEE,2012.
[6]Michalzik R.VCSELs:fundamentals,technology and applications of verticalcavity surfaceemitting lasers [M].Berlin Heidelberg:Springer,2013.
[7]段慧.基于速率方程的半导体激光器响应特性研究 [D].秦皇岛:燕山大学,2010.
Duan H.The response characteristics of semiconductor lasers based on rate equations [D].Qinhuangdao:Yanshan University,2010.
[8]Boyd S,Parikh N,Chu E,et al.Distributed optimization and statistical learning via the alternating direction method of multipliers [J].Foundations and Trends in Machine Learning,2011,3(1):1-122.
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