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Effect of the defect on the focusing in a two-dimensional photonic-crystal-based flat lens
作者姓名:冯志芳  王秀国  李志远  张道中
作者单位:Beijing University of Chemical Technology, Beijing rm 100029, China;School of Applied Mathematics, Central University of Finance and Economics, Beijing 100081, China;Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
基金项目:Project supported by the National Natural Science Foundation of China (Grant No 10704006), the Young Scholars Fund of Beijing University of Chemical Technology and the Supercomputing Centre, Computer Network Information centre, Chinese Academy of Sciences.
摘    要:We have investigated in detail the influence of defect on the focusing of electromagnetic waves in a two-dimensional photonic-crystal flat lens by using the finite-difference time-domain method. The result shows that many focusings can be observed at the symmetrical positions when a defect is introduced into the lens. Furthermore, the wave-guides in the lens can confine the transmission wave effectively and improve the quality of the focusing.

关 键 词:扁状晶体  光子晶体  缺陷  光学性质
收稿时间:2007-01-10
修稿时间:2007-09-20

Effect of the defect on the focusing in a two-dimensional photonic-crystal-based flat lens
Feng Zhi-Fang,Wang Xiu-Guo,Li Zhi-Yuan and Zhang Dao-Zhong.Effect of the defect on the focusing in a two-dimensional photonic-crystal-based flat lens[J].Chinese Physics B,2008,17(3):1101-1106.
Authors:Feng Zhi-Fang  Wang Xiu-Guo  Li Zhi-Yuan and Zhang Dao-Zhong
Institution:Beijing University of Chemical Technology, Beijing rm 100029, China; Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; School of Applied Mathematics, Central University of Finance and Economics, Beijing 100081, China
Abstract:We have investigated in detail the influence of defect on the focusing of electromagnetic waves in a two-dimensional photonic-crystal flat lens by using the finite-difference time-domain method. The result shows that many focusings can be observed at the symmetrical positions when a defect is introduced into the lens. Furthermore, the wave-guides in the lens can confine the transmission wave effectively and improve the quality of the focusing.
Keywords:flat lens  defect  photonic crystal
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