Izús Gonzalo, Colet Pere, San Miguel Maxi, Santagiustina Marco
Departamento de Física, FCEyN, Universidad Nacional de Mar del Plata and CONICET, Funes 3350, (7600) Mar del Plata, Argentina.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Sep;68(3 Pt 2):036201. doi: 10.1103/PhysRevE.68.036201. Epub 2003 Sep 3.
The synchronization of vectorial, noise-sustained structures in nonlinear optical systems is discussed. In particular, the analysis is made for nondegenerate optical parametric oscillators with walk off. The interplay between walk off and noise fluctuations leads to the formation of noise-sustained transverse patterns in both the signal and idler fields. Despite the fact that both patterns are stochastic macroscopic structures driven by independent sources of noise, their correlation grows with time, finally leading to a spatially distributed time synchronization of noise-sustained structures. A physical explanation of this phenomenon is found by analyzing the linear instability process and the existence of exact nonlinear solutions that show the same correlation.
讨论了非线性光学系统中矢量噪声维持结构的同步。特别地，对具有走离效应的非简并光学参量振荡器进行了分析。走离效应与噪声涨落之间的相互作用导致在信号场和闲频场中形成噪声维持的横向模式。尽管这两种模式都是由独立噪声源驱动的随机宏观结构，但它们的相关性随时间增长，最终导致噪声维持结构的空间分布时间同步。通过分析线性不稳定性过程以及存在显示相同相关性的精确非线性解，找到了对这一现象的物理解释。
