激光技术, 2018, 42 (3): 289, 网络出版: 2018-05-29
零折射率超材料研究进展
Research progress of zero refractive index metamaterial
材料 零折射 介电常数 磁导率 隧道效应 发射 光捕获 materials zero refractive index permittivity permeability tunneling effect emission light trapping
摘要
近年来, 具有自然界中天然媒质所不具备的特殊性质的电磁超材料在很多领域引起了广泛关注。零折射率超材料(ZRIM)是一种相对介电常数和磁导率为零的特征材料, 在光学领域具有很多独特的特征, 主要表现在波长拉伸、相位一致以及隧道效应等方面。介绍了几种典型的ZRIM结构以及ZRIM结构中实现的性质, 包括无限大波长、均匀场分布等。讨论了ZRIM结构的实现在物理光学中的重要应用, 比如定向发射、发射增强、边界态分析以及光的捕获。基于零折射率的性质以及特征的研究, 为新器件开发、新光学元件的基础研究提供了相应的参考和指导。
Abstract
In recent years, electromagnetic metamaterial has attracted wide attention in many fields since it has special characteristics that natural medium does not possess. Zero refractive index metamaterial(ZRIM) is a material with zero permittivity and zero permeability. It has many unique features in the field of optics, such as wavelength stretching, phase consistency and tunnel effect. Several typical ZRIM structures and the properties implemented in the ZRIM structure were introduced, such as infinite wavelength, uniform field distribution, and so on. The important applications of ZRIM structure in physical optics were discussed, for example, directional emission, emission enhancement, boundary state analysis and light capture. The study on the properties and characteristics of ZRIM provides reference and guidance for the development of new devices and the basic research of new optical elements.
许军, 陈溢杭. 零折射率超材料研究进展[J]. 激光技术, 2018, 42(3): 289. XU Jun, CHEN Yihang. Research progress of zero refractive index metamaterial[J]. Laser Technology, 2018, 42(3): 289.