All-angle negative refraction without negative effective index

作者：Chiyan Luo, Steven G. Johnson, John D. Joannopoulos, John Brian Pendry · 发表于：Physical review. B, Condensed matter · 年份：2002 · DOI：10.1103/physrevb.65.201104 · 被引用次数：911 · 研究领域：Photonic Crystals and Applications、Optical Coatings and Gratings、Metamaterials and Metasurfaces Applications

We describe an all-angle negative refraction effect that does not employ a negative effective index of refraction and involves photonic crystals. A few simple criteria sufficient to achieve this behavior are presented. To illustrate this phenomenon, a microsuperlens is designed and numerically demonstrated.