非线性光子准晶中高拓扑荷的稳定结构
Stable structures with high topological charge in nonlinear photonic quasicrystals
摘要：
在立方非线性和饱和非线性情况下，用数值和解析方法研究了5束和8束光干涉产生的光子准晶体中拓扑荷为3和4的稳定涡旋。这些结构是实验上可实现的，包括一个稳定的电荷4涡流的原型例子。直接数值模拟证实了分析和数值线性稳定性分析的预测。
英文摘要：
Stable vortices with topological charge of 3 and 4 are examined numerically and analytically in photonic quasicrystals created by interference of 5 as well as 8 beams, in the cases of cubic as well as saturable nonlinearities. These structures are experimentally realizable, including a prototypical example of a stable charge 4 vortex. Direct numerical simulations corroborate the analytical and numerical linear stability analysis predictions.
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