Based on the model of a bipolarised laser, which takes into account real orientations of absorbing and emitting dipoles of active centres in the unit cell of an Nd : YAG single crystal, we have shown that the appearance of low-frequency relaxation oscillations requires the participation of both competing pump channels through linearly and circularly polarised dipole transitions.

中文翻译：

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具有Fabry – Perot腔的Nd：YAG双极化激光器中的弛豫振荡

基于双极化激光器的模型，该模型考虑了Nd：YAG单晶晶胞中有源中心的吸收和发射偶极子的实际取向，我们表明低频弛豫振荡的出现需要参与通过线性和圆极化的偶极跃迁来对两个竞争泵浦通道进行分析。