Centro de Investigaciones en Láseres y Aplicaciones (CEILAP), CITEDEF-CONICET, Villa Martelli, Argentina.
Opt Lett. 2011 Nov 15;36(22):4449-51. doi: 10.1364/OL.36.004449.
We report experimental and theoretical evidence of the existence of extreme value events in the form of scarce and randomly emerging giant pulses in the femtosecond (self-pulsing or Kerr-lens mode-locked) Ti:sapphire laser. This laser displays complex dynamical behavior, including deterministic chaos, in two different regimes. The extreme value pulses are observed in the chaotic state of only one of these two regimes. The observations agree with the predictions of a well-tested theoretical model that does not include noise or self-Q-switching into its framework. This implies that, in this laser, the extreme effects have a nontrivial dynamical origin. The Ti:sapphire laser is hence revealed as a new and convenient system for the study of these effects.
我们报告了实验和理论证据，证明在飞秒（自脉冲或克尔透镜锁模）钛宝石激光器中存在以稀有且随机出现的巨脉冲形式出现的极值事件。该激光器在两种不同的模式下显示出复杂的动力学行为，包括确定性混沌。在这两种模式中的一种混沌状态下观察到了极值脉冲。这些观察结果与一个经过充分验证的理论模型的预测相符，该模型的框架中不包括噪声或自 Q 开关。这意味着，在这种激光中，极端效应具有非平凡的动力学起源。因此，钛宝石激光器被揭示为研究这些效应的新的方便系统。
