Pesch M, Lange W, Gomila D, Ackemann T, Firth W J, Oppo G-L
Institut für Angewandte Physik, Westfälische Wilhelms-Universität Münster, Corrensstr. 2/4, D-48149 Münster, Germany.
Phys Rev Lett. 2007 Oct 12;99(15):153902. doi: 10.1103/PhysRevLett.99.153902.
Two-dimensional fronts and coarsening dynamics with a t{1/2} power law are analyzed experimentally and theoretically in a nonlinear optical system of a sodium vapor cell with single-mirror feedback. Modifications of the t{1/2} power law are observed in the vicinity of a modulational instability leading to the formation of spatial solitons of different sizes. The experimental and numerical observations give direct evidence for the locking of fronts as the mechanism of soliton formation. A phenomenological equation for the dynamics of the domain radius explains the observed behavior.
在具有单镜反馈的钠蒸气池非线性光学系统中，对具有t{1/2}幂律的二维前沿和粗化动力学进行了实验和理论分析。在调制不稳定性附近观察到t{1/2}幂律的修正，这导致了不同尺寸空间孤子的形成。实验和数值观测直接证明了前沿锁定是孤子形成的机制。一个关于畴半径动力学的唯象方程解释了所观察到的行为。
