We demonstrate a flexible experimental method to realize fast reconfiguration of plasma photonic crystals by self-organization of filaments in dielectric barrier discharge (DBD). The symmetry and lattice constant of plasma photonic crystals can both be dynamically tuned by simply changing the applied voltage. The reconfiguration from a triangular lattice to a square lattice is realized and the triangular lattices with different lattice constants are also obtained. A phenomenological reaction-diffusion model of two interacting layers is established to simulate the formation of different plasma structures. Experimental observations and numerical simulation are in good agreement. Moreover, the band diagrams of different plasma photonic crystals have been studied by use of finite element method. It is shown that the positions and sizes of the band gaps change significantly when the configurations of plasma photonic crystals have been changed. Such plasma structures can be used as potential tunable metamaterials, which may find wide applications in the manipulation of microwaves and terahertz waves.

我们展示了一种灵活的实验方法，可以通过在电介质阻挡层放电（DBD）中实现灯丝的自组织来快速重构等离子光子晶体。等离子体光子晶体的对称性和晶格常数都可以通过简单地改变施加的电压来动态地调整。实现了从三角晶格到正方形晶格的重构，并且还获得了具有不同晶格常数的三角晶格。建立了两个相互作用层的现象学反应扩散模型，以模拟不同等离子体结构的形成。实验观察和数值模拟吻合良好。此外，已经通过有限元方法研究了不同等离子体光子晶体的能带图。结果表明，当等离子光子晶体的结构发生改变时，带隙的位置和大小会发生显着变化。这样的等离子体结构可以用作潜在的可调谐超材料，可以在微波和太赫兹波的操纵中找到广泛的应用。