Neubecker R, Zimmermann A
Institute of Applied Physics, Darmstadt University of Technology, Hochschulstrabetae 6, 64289 Darmstadt, Germany.
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Mar;65(3 Pt 2A):035205. doi: 10.1103/PhysRevE.65.035205. Epub 2002 Feb 27.
A nonlinear optical system, which spontaneously forms hexagonal patterns, is exposed to a weak, spatially modulated forcing. As forcing, stationary hexagonal patterns are used under variation of their transverse wave number. In the experiment, we observe a locking when the forcing wave number is close to one of the critical wave numbers of the unforced system. Outside the locking regimes, forcing provokes spatiotemporal disorder. The system response is characterized quantitatively with respect to its dynamics and to its spatial order.
一个自发形成六边形图案的非线性光学系统，受到一个微弱的、空间调制的外力作用。作为外力，在固定六边形图案的横向波数变化的情况下使用它们。在实验中，当外力波数接近无外力系统的临界波数之一时，我们观察到一种锁定现象。在锁定区域之外，外力会引发时空无序。该系统的响应在其动力学和空间秩序方面进行了定量表征。
