中国物理B ›› 2008, Vol. 17 ›› Issue (3): 1101-1106.doi: 10.1088/1674-1056/17/3/058

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Effect of the defect on the focusing in a two-dimensional photonic-crystal-based flat lens

冯志芳1, 李志远2, 张道中2, 王秀国3   

  1. (1)Beijing University of Chemical Technology, Beijing rm 100029, China; (2)Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (3)School of Applied Mathematics, Central University of Finance and Economics, Beijing 100081, China
  • 收稿日期:2007-01-10 修回日期:2007-09-20 出版日期:2008-03-04 发布日期:2008-03-04
  • 基金资助:
    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.

Effect of the defect on the focusing in a two-dimensional photonic-crystal-based flat lens

Feng Zhi-Fang(冯志芳)a)†, Wang Xiu-Guo(王秀国)b),Li Zhi-Yuan(李志远)c), and Zhang Dao-Zhong(张道中)c)   

  1. a Beijing University of Chemical Technology, Beijing rm 100029, China; b School of Applied Mathematics, Central University of Finance and Economics, Beijing 100081, China; c Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2007-01-10 Revised:2007-09-20 Online:2008-03-04 Published:2008-03-04
  • Supported by:
    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.

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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: flat lens, defect, photonic crystal

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.

Key words: flat lens, defect, photonic crystal

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
02.70.Bf (Finite-difference methods) 42.79.Bh (Lenses, prisms and mirrors) 42.79.Gn (Optical waveguides and couplers)