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首页> 外文期刊>IEEE Journal of Quantum Electronics >Analysis of the phase-amplitude coupling factor and spectral linewidth of distributed feedback and composite-cavity semiconductor lasers
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Analysis of the phase-amplitude coupling factor and spectral linewidth of distributed feedback and composite-cavity semiconductor lasers

机译：分布反馈和复合腔半导体激光器的相-幅耦合因子和光谱线宽分析

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摘要

A Green's function approach to the analysis of semiconductor lasers is formulated in a form suitable for complex cavity structures. Both the spontaneous emission rate and the effective phase-amplitude coupling factor can be accurately evaluated. For distributed-feedback (DFB) lasers, the spontaneous emission rate is strongly dependent on both the facet reflectivities and the grating coupling coefficients. The effective phase-amplitude coupling factor depends on the wavelength detuning from the gain maximum. The calculated linewidth of DFB lasers differs considerably from previous calculated results and gives better agreement with experimental results. For composite-cavity lasers, the frequency dependence of the equivalent reflectivity has a strong impact on the phase-amplitude coupling factor and the spontaneous emission rate. Distributed Bragg reflector (DBR) lasers are investigated as an example of a composite-cavity structure.
机译：格林函数分析半导体激光器的方法以适合复杂腔体结构的形式制定。可以准确地评估自发发射率和有效相位-振幅耦合因子。对于分布式反馈（DFB）激光器，自发发射率在很大程度上取决于刻面反射率和光栅耦合系数。有效的相位-幅度耦合因子取决于从增益最大值失谐的波长。 DFB激光器的计算线宽与先前的计算结果有很大差异，并且与实验结果更好地吻合。对于复合腔激光器，等效反射率的频率依赖性对相位-振幅耦合因子和自发发射率具有很大的影响。作为复合腔结构的示例，研究了分布式布拉格反射器（DBR）激光器。

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