| 二维椭圆形介质柱光子晶体的负折射成像特性 |
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| 引用本文： | 冯帅,张龙,黄朋朋.二维椭圆形介质柱光子晶体的负折射成像特性[J].中央民族大学学报(自然科学版),2007,16(3):250-252,258. |
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| 作者姓名： | 冯帅 张龙 黄朋朋 |
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| 作者单位： | 中央民族大学,物理与电子工程学院,北京,100081 |
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| 基金项目： | 中央民族大学本科生研究训练计划项目 |
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| 摘 要： | 本文利用时域有限差分方法研究了由椭圆形介质柱组成的二维正方晶格光子晶体平板的负折射成像特性.研究表明对于光子晶体第二个能带中的特定频率区域,靠近晶体平板放置的点光源可以经过矩形光子晶体在另一侧形成一个高质量的实像,并且可以实现有效折射率为-1的负折射现象.
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| 关 键 词： | 光子晶体 负折射 近场成像 |
| 文章编号： | 1005-8036（2007）03-0250-03 |
| 修稿时间： | 2007-03-13 |
Negative Refraction and Near-Field Imaging of an Elliptical-Rod Photonic Crystal Slab in the Second Band |
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| FENG Shuai,ZHANG Long,HUANG Peng-peng.Negative Refraction and Near-Field Imaging of an Elliptical-Rod Photonic Crystal Slab in the Second Band[J].Journal of The Central University for Nationalities(Natural Sciences Edition),2007,16(3):250-252,258. |
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| Authors: | FENG Shuai ZHANG Long HUANG Peng-peng |
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| Institution: | School of Physics and Electrical Engineering, Central University for Nationalities, Beijing, 100081, China |
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| Abstract: | Negative refraction and imaging properties of the electromagnetic wave through a two-dimensional photonic crystal(PC) slab,which consists of a square lattice of elliptical dielectric rods,is studied by the finite-difference time-domain method.We find that a point source placed in the vicinity of the rectangular PC slab can form a good-quality image spot through the PC slab for the incident frequencies within the second photonic band.And negative refraction of an effective index of-1 can be obtained in this kind of PC slab. |
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| Keywords: | photonic crystal negative refraction near-field imaging |
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