The authors of works [1, 2] published in Quantum Electronics assert that the rate equation for photon density with a term taking into account the contribution of spontaneous emission to the laser mode is erroneous (i.e., the spontaneous term should be excluded from consideration) and criticise works [3, 4]. In the present work, we analyse previously published papers and show that the necessity of taking into account the contribution of spontaneous emission to the laser mode follows from the quantum-mechanical rate equation for semiconductor lasers. The results obtained in [1, 2] are analysed.

中文翻译：

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关于半导体激光器光子密度速率方程的“不正确性”

量子电子公司（Quantum Electronics）上发表的著作[1，2]的作者断言，考虑到自发发射对激光模式的影响的光子密度速率方程是错误的（即，不应考虑自发项）并批评作品[3，4]。在当前的工作中，我们分析了以前发表的论文，并表明考虑自发发射对激光模式的贡献的必要性源于半导体激光器的量子力学速率方程。分析在[1，2]中获得的结果。