光纤Laser向光学Turbulence转变过程中强度动力学的持久性和随机周期性
Persistence and Stochastic Periodicity in the Intensity Dynamics of a Fiber Laser During the Transition to Optical Turbulence
摘要：
许多自然系统显示不同的动力学机制之间的过渡，这是很难识别的数据时，是嘈杂的和高维的。一个技术相关的例子是光纤激光器，它可以显示复杂的动力学行为，涉及数百万腔模式的非线性相互作用。在这里，我们研究了当激光泵浦功率增加时发生的层流-湍流转变。通过应用各种数据分析工具的经验强度时间序列，我们表征其持久性，并表明，在过渡时间的相关性可以精确地表示一个令人惊讶的简单模型。
英文摘要：
Many natural systems display transitions among different dynamical regimes, which are difficult to identify when the data is noisy and high dimensional. A technologically relevant example is a fiber laser, which can display complex dynamical behaviors that involve nonlinear interactions of millions of cavity modes. Here we study the laminar-turbulence transition that occurs when the laser pump power is increased. By applying various data analysis tools to empirical intensity time series we characterize their persistence and demonstrate that at the transition temporal correlations can be precisely represented by a surprisingly simple model.
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