| Near-field imaging of a square-lattice metallic photonic-crystal slab at the second band |
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| 作者姓名： | 冯帅 冯志芳 任坤 任承 李志远 程丙英 张道中 |
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| 作者单位： | Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China;Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China;Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China;Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China;Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China;Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China;Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China |
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| 基金项目： | Project supported by the National Key Basic Research Special Foundation of China (Grant Nos 2004CB719804 and 2001CB610402), the National Natural Science Foundation of China (Grant No 10404036) and National Center for Nanoscience and Technology,China (Grant No 2003CB7169) also the support from the supercomputing Center, CNIC, CAS. |
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| 摘 要： |
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| 关 键 词： | 近场成像 正方晶格金属性光子晶体板 负折射 有限差分时域法 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2005-10-102005-12-27 |
Near-field imaging of a square-lattice metallic photonic-crystal slab at the second band |
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| Feng Shuai,Feng Zhi-Fang,Ren Kun,Ren Cheng,Li Zhi-Yuan,Cheng Bing-Ying and Zhang Dao-Zhong.Near-field imaging of a square-lattice metallic photonic-crystal slab at the second band[J].Chinese Physics B,2006,15(3):552-555. |
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| Authors: | Feng Shuai Feng Zhi-Fang Ren Kun Ren Cheng Li Zhi-Yuan Cheng Bing-Ying and Zhang Dao-Zhong |
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| Affiliation: | Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China |
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| Abstract: | Imaging properties of a two-dimensional photonic crystal slab lens are
investigated through the finite-difference time-domain method. In this
paper, we consider the photonic crystal slab consisting of a square lattice
of square metallic rods immersed in a dielectric background. Through the
analysis of the equifrequency-surface contours and the field patterns of a
point source placed in the vicinity of the photonic crystal slab, we find
that a good-quality image can form at the frequencies in the second
TM-polarized photonic band. Comparing the images formed at different
frequencies, we can clearly see that an excellent-quality image is formed by
the mechanisms of simultaneous action of the self-collimation effect and the
negative-refraction effect. |
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| Keywords: | negative refraction photonic crystal |
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