具有功率同步的互耦合二极管laser系统的光学相位动力学
Optical phase dynamics in mutually coupled diode laser systems exhibiting power synchronization
摘要：
我们探讨了两个二极管激光器通过其延迟光场相互耦合的功率同步现象背后的物理机制。在二极管激光器中，光场的振幅和相位通过所谓的线宽增强因子$α$耦合。在这项工作中，我们探讨的作用，通过$α$在这种相互延迟耦合的二极管激光器系统中的振幅（因此功率）同步的电场的光学相位。我们的数值结果表明，光学相位的同步驱动的同步死亡制度的激光器的功率。我们还发现，由于$α$不同的二极管激光器，系统经历了一系列的同相振幅死亡状态。在连续的振幅死亡区域之间的窗口内，场振幅之间的互相关表现出关于$α$的普遍幂律行为。
英文摘要：
We probe the physical mechanism behind the known phenomenon of power synchronization of two diode lasers that are mutually coupled via their delayed optical fields. In a diode laser, the amplitude and the phase of the optical field are coupled by the so-called linewidth enhancement factor, $α$. In this work, we explore the role of optical phases of the electric fields in amplitude (and hence power) synchronization through $α$ in such mutually delay-coupled diode laser systems. Our numerical results show that the synchronization of optical phases drives the powers of lasers to synchronized death regimes. We also find that as $α$ varies for different diode lasers, the system goes through a sequence of in-phase amplitude-death states. Within the windows between successive amplitude-death regions, the cross-correlation between the field amplitudes exhibits a universal power-law behaviour with respect to $α$.
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