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.
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 quasicrystais 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.
出处
《物理》
CAS
北大核心
2006年第1期10-13,共4页
Physics
基金
国家重点基础研究发展计划(批准号:2001CB610402
2004CB719804)
国家自然科学基金(批准号:10374009)资助项目
