| 等效折射率为非-1时的亚波长成像 |
| |
| 引用本文： | 童元伟,田双,庄松林.等效折射率为非-1时的亚波长成像[J].物理学报,2011,60(5):54201-054201. |
| |
| 作者姓名： | 童元伟 田双 庄松林 |
| |
| 作者单位： | (1)上海理工大学光电学院,上海 200093; (2)上海理工大学理学院,上海 200093; (3)上海理工大学理学院,上海 200093;上海理工大学光电学院,上海 200093 |
| |
| 基金项目： | 国家重点基础研究发展计划(批准号:2005CB724304),国家自然科学基金(批准号:60777045)和校博士科研启动基金(批准号:1D-00-341-003)资助的课题. |
| |
| 摘 要： | 本文采用硅柱子周期性排列构成六角结构光子晶体,用平面波展开方法和FDTD方法研究表明,此结构光子晶体存在等效折射率接近-1的频率区域.在等效折射率趋于-1但不等于-1时,此光子晶体平板结构超透镜能形成一个非近场的像.模拟还发现,此结构平板光子晶体等效折射率为非-1时,可以亚波长成像.
关键词：
负折射
光子晶体
亚波长
成像
|
| 关 键 词： | 负折射 光子晶体 亚波长 成像 |
| 收稿时间： | 2009-12-30 |
| 修稿时间： | 7/6/2010 12:00:00 AM |
Sub-wavelength imaging of the two-dimensional photonic crystal with effective index close to -1 |
| |
| Tong Yuan-Wei,Tian Shuang,Zhuang Song-Lin.Sub-wavelength imaging of the two-dimensional photonic crystal with effective index close to -1[J].Acta Physica Sinica,2011,60(5):54201-054201. |
| |
| Authors: | Tong Yuan-Wei Tian Shuang Zhuang Song-Lin |
| |
| Institution: | College of Science,University of Shanghai for Science and Technology, Shanghai 200093, China;College of Science,University of Shanghai for Science and Technology, Shanghai 200093, China;College of Optical and Electronics Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
| |
| Abstract: | This paper aims at designing a 2D photonic crystal (PC) with negative refractive index close to -1. Plane wave expansion method (PWEM) is used to obtain the band diagram and its equal-frequency surface (EFS). And the finite difference time domain (FDTD) simulation method is also used to analyze the equivalent refractive index of the PC. The results show the equivalent refractive index of the PC close to -1 within a certain frequency band. A super-lens is formed by this photonic crystal, which can form a non-near-field image. Moreover, the super-lens has the capability of sub-wavelength imaging with its effective index close to -1. |
| |
| Keywords: | negative refraction photonic crystals sub-wavelength imaging |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《物理学报》浏览原始摘要信息 |
| 点击此处可从《物理学报》下载免费的PDF全文 |
|
