标题： 脉冲序列在具有延迟自反馈的可激发微激光器的自旋翻转模型中的强共振偏振动力学 显示英文标题

标题： Strongly resonant polarization dynamics of pulse trains in a spin-flip model for an excitable microlaser with delayed self-feedback

摘要： 受最近关于可激发微激光器中偏振动力学的实验观察结果的启发，该微激光器具有饱和吸收体并与外部反馈镜耦合，如[Ruschel等人(2025) Opt. Lett. 50 (8) 2618]所报告，我们在此提出对系统所产生的再生矢量脉冲序列的锁定动力学的深入理论研究。我们对具有延迟反馈的相应自持脉冲序列的自旋翻转模型进行了数值分岔分析。其重点是强共振区域，在这些区域中，偏振再生脉冲序列的峰值强度调制与脉冲再生时间的2、3和4倍锁定。具体来说，我们在幅度和相位各向异性参数的参数平面上的环面分岔曲线中识别出强共振旋转数的点，并继续出现的折叠和周期加倍分岔曲线以确定锁定区域。通过这种方式，我们明确了脉冲序列在何处表现出强共振的偏振动力学，并强调即使在延迟耦合的微激光器中存在微弱的偏振耦合也会产生丰富的动力学特性。这些结果可能对未来用于神经启发片上计算的耦合微激光器系统的设计产生影响，在这种系统中，可激发脉冲的偏振可以用来编码或处理信息。 显示英文摘要

摘要： Motivated by recent experimental observations concerning the polarization dynamics in an excitable microlaser with saturable absorber coupled to an external feedback mirror reported in [Ruschel et al. (2025) Opt. Lett. 50 (8) 2618], we propose here an in-depth theoretical investigation of the locked dynamics of regenerative vectorial pulse trains that this system produces. We perform a numerical bifurcation analysis of self-sustained pulse trains of a corresponding spin-flip model with delayed feedback. Its focus is on strongly resonant regimes, where the modulation of the peak intensities of polarized regenerative pulse trains locks to 2, 3 and 4 times the pulse regeneration time. Specifically, we identify points of strongly resonant rotation numbers on curves of torus bifurcations in the parameter plane of the amplitude and phase anisotropy parameters, and continue emerging curves of fold and period-doubling bifurcations to identify locking regions. In this way, we clarify where pulse trains show strongly resonant polarization dynamics and highlight that even weak polarization coupling in delay-coupled microlasers creates considerable dynamical richness. These results may have impact on the design of future coupled microlasers systems for neuroinspired on-chip computing, where the polarization of an excitable pulse can be used to encode or process information.