十二重准晶光子结构中的负折射与成像

Negative refraction and imaging using 12-fold-symmetry quasicrystal structures

摘要: 最近实验证明周期性的光子晶体中存在电磁波的负折射现象，并且观测到亚波长成像.然而，这些研究主要集中在周期性结构中，对非周期结构的研究还没有相关的报道.文章报道了一种新的理论和实验结果：非周期性十二重准晶光子结构同样存在负折射，并且可以实现超透镜的远场成像.具有这些特性的光子准晶可以广泛的应用于光集成器件中.
- 准晶 /
- 负折射 /
- 成像
Abstract: Recently, negative refraction of electromagnetic waves in photonic crystals was demonstrated experimentally and subwavelength imagingobserved. However, these investigations all focused on the periodic structure. Here we report a new theoretical and experimental finding that negative refraction can occur in certain transparent quasicrystalline photonic structures. More interestingly, a superlens based on 2-dimensional photonic quasicrystals can form a non-near-field subwavelength image whose position varies with the source distance. This property makes such quasicrystals promising for application in a range of optical devices.
- quasicrystal /
- negative refraction /
- image

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