| Negative Refraction and Near-Field Imaging of an Elliptical-Rod Photonic Crystal Slab in the Second Band |
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| 作者姓名： | 冯帅 敖玲 王义全 李志远 张道中 |
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| 作者单位： | [1]Academy of Physics and Electronic Engineering, Central University for Nationalities, Beijing 100081 [2]Institute of Physics, Chinese Academy of Sciences, Bering 100080 |
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| 基金项目： | Supported by the National Key Basic Research Special Foundation of China under Grant No 2004CB719804, the National Natural Science Foundation of China under Grant Nos 10404036 and 10674185, and National Centre for Nanoscience and Technology of China under Grant No 2003CB7169, and the Supercomputing Centre, CNIC, CAS. |
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| 摘 要： | 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 immersed in the air background, is studied by the plane-wave expansion method and the finite-difference time-domain method. A point source placed in the vicinity of the PC slab can form a good-quality image spot through the PC slab for the incident frequencies within the second photonic band. The calculated result also shows that negative refraction occurs in this kind of PC slab.
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| 关 键 词： | 阴极 光折射 椭圆 晶体 |
| 收稿时间： | 2007-3-7 |
| 修稿时间： | 2007-03-07 |
Negative Refraction and Near-Field Imaging of an Elliptical-Rod Photonic Crystal Slab in the Second Band |
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| FENG Shuai,AO Ling,WANG Yi-Quan,LI Zhi-Yuan,ZHANG Dao-Zhong.Negative Refraction and Near-Field Imaging of an Elliptical-Rod Photonic Crystal Slab in the Second Band[J].Chinese Physics Letters,2007,24(9):2675-2677. |
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| Authors: | FENG Shuai AO Ling WANG Yi-Quan LI Zhi-Yuan ZHANG Dao-Zhong |
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| Affiliation: | 1 Academy of Physics and Electronic Engineering, Central University for Nationalities, Beijing 100081 ; 2 Institute of Physics, Chinese Academy of Sciences, Bering 100080 |
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| Abstract: | Negative refraction and imaging properties of the electromagnetic wavethrough a two-dimensional photonic crystal (PC) slab, which consists of a square lattice of elliptical dielectric rods immersed in the air background, is studied by the plane-wave expansion method and the finite-difference time-domain method. A point source placed in the vicinity of the PC slab can form a good-quality image spot through the PC slab for the incident frequencies within the second photonic band. The calculated result also shows that negative refraction occurs in this kind of PC slab. |
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| Keywords: | 78 20 Ci 42 70 Qs |
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