We report intermittent large-intensity pulses that originate in Zeeman laser due to instabilities in quasiperiodic motion, one route follows torus-doubling to chaos and another goes via quasiperiodic intermittency in response to variation in system parameters. The quasiperiodic breakdown route to chaos via torus-doubling is well known; however, the laser model shows intermittent large-intensity pulses for parameter variation beyond the chaotic regime. During quasiperiodic intermittency, the temporal evolution of the laser shows intermittent chaotic bursting episodes intermediate to the quasiperiodic motion instead of periodic motion as usually seen during the Pomeau-Manneville intermittency. The intermittent bursting appears as occasional large-intensity events. In particular, this quasiperiodic intermittency has not been given much attention so far from the dynamical system perspective, in general. In both cases, the infrequent and recurrent large events show non-Gaussian probability distribution of event height extended beyond a significant threshold with a decaying probability confirming rare occurrence of large-intensity pulses.

中文翻译：

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准周期运动的不稳定性导致塞曼激光中的间歇性大强度事件

我们报告了由于准周期运动的不稳定性而在塞曼激光器中产生的间歇性大强度脉冲，一条路线遵循环面加倍混沌，另一条路线通过准周期间歇性响应系统参数的变化。众所周知，通过环面加倍导致混沌的准周期击穿路径是众所周知的。然而，激光模型显示了超出混沌状态的参数变化的间歇性大强度脉冲。在准周期间歇期间，激光的时间演化显示了准周期运动中间的间歇性混沌爆发事件，而不是通常在 Pomeau-Manneville 间歇期间看到的周期性运动。间歇性爆发表现为偶发的大强度事件。特别是，到目前为止，从动力系统的角度来看，这种准周期间歇性一般没有受到太多关注。在这两种情况下，偶发和反复发生的大事件显示事件高度的非高斯概率分布超出了显着阈值，其概率衰减证实了大强度脉冲的罕见发生。