Due to their small separation of longitudinal modes, Fabry-Pérot type laser diodes show rich mode competition effects. We present streak camera measurements of two nitride laser diodes with different cavity lengths and model them using a fully dynamic model based on the semiconductor Bloch equations, obtaining good agreement. Both theory and experiment show that the different mode spacing has a large influence on the interactions between longitudinal modes. In contrast to rate-equation type models, our approach includes the detailed density distribution as well as the derivation of the relevant parameters, e.g. broadening, from standard material quantities, thus setting a milestone on the way towards a fully predictive laser model.

中文翻译：

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氮化物激光二极管中的模式滚动效应

由于它们的纵向模式分离很小，法布里-珀罗型激光二极管显示出丰富的模式竞争效果。我们介绍了两个具有不同腔长的氮化物激光二极管的条纹相机测量结果，并使用基于半导体Bloch方程的全动态模型对它们进行建模，获得了良好的一致性。理论和实验均表明，不同的模间距对纵向模之间的相互作用有很大的影响。与速率方程式模型相反，我们的方法包括详细的密度分布以及相关参数的推导（例如，从标准材料数量中扩展），从而为实现完全预测的激光模型奠定了里程碑。