Anomalous transport of light in photonic crystal  

作　　者：LI ZhiYuan 

机构地区：[1]Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences

出　　处：《Science China(Information Sciences)》2013年第12期48-68,共21页中国科学（信息科学）（英文版）

基　　金：supported by National Key Basic Research Special Foundation of China(Grant No.2011CB922002);National Natural Science Foundation of China;National Center for Nanoscience and Technology of China

摘　　要：Photonic crystal （PC） offers a powerful means to mold the flow of light and manipulate light- matter interaction at subwavelength scale. In this paper, we review some recent theoretical and experimental work in our group on design and fabrication of microwave and infrared PC structures with the capability to achieve various anomalous transport behaviors of light. We discuss several microwave 2D PC and quasi-crystal structures that exhibit nearly isotropic equi-frequency surface （EFS） contours with effective refractive index equal to -1. In these structures, we can observe negative refraction induced focusing of microwave against a fiat slab lens in non-neax field regions. In comparison, if PC structures have anisotropic EFS contours in the lowest photonic band, only near-field focusing is expected. We move forward to high frequency infrared band and exploreremarkable dispersion properties of silicon 2D PC slab to achieve broad-band negative refraction and self-collimation transport of infrared light beam. We also explore the possibility to realize negative refraction and flat-lens focusing of light in 3D PC made from inverse opal. These studies show that PCs can offer a powerful route to manipulate various anomalous transport of light via photonic band gap and band structure engineering, which can be harnessed to build a wide variety of integrated optical devices for large-scale optical integration.Photonic crystal （PC） offers a powerful means to mold the flow of light and manipulate light- matter interaction at subwavelength scale. In this paper, we review some recent theoretical and experimental work in our group on design and fabrication of microwave and infrared PC structures with the capability to achieve various anomalous transport behaviors of light. We discuss several microwave 2D PC and quasi-crystal structures that exhibit nearly isotropic equi-frequency surface （EFS） contours with effective refractive index equal to -1. In these structures, we can observe negative refraction induced focusing of microwave against a fiat slab lens in non-neax field regions. In comparison, if PC structures have anisotropic EFS contours in the lowest photonic band, only near-field focusing is expected. We move forward to high frequency infrared band and exploreremarkable dispersion properties of silicon 2D PC slab to achieve broad-band negative refraction and self-collimation transport of infrared light beam. We also explore the possibility to realize negative refraction and flat-lens focusing of light in 3D PC made from inverse opal. These studies show that PCs can offer a powerful route to manipulate various anomalous transport of light via photonic band gap and band structure engineering, which can be harnessed to build a wide variety of integrated optical devices for large-scale optical integration.

关 键 词：photonic crystal photonic quasicrystal photonic band structure equifrequency surface contour negative refraction SUPERLENS SELF-COLLIMATION 

分 类 号：O734[理学—晶体学] TL631.24[核科学技术—核技术及应用]