中国物理B ›› 2006, Vol. 15 ›› Issue (3): 552-555.doi: 10.1088/1009-1963/15/3/018

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Near-field imaging of a square-lattice metallic photonic-crystal slab at the second band

冯帅, 冯志芳, 任坤, 任承, 李志远, 程丙英, 张道中   

  1. Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China
  • 收稿日期:2005-10-10 修回日期:2005-12-27 出版日期:2006-03-20 发布日期:2006-03-20
  • 基金资助:
    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.

Near-field imaging of a square-lattice metallic photonic-crystal slab at the second band

Feng Shuai (冯帅), Feng Zhi-Fang (冯志芳), Ren Kun (任坤), Ren Cheng (任承), Li Zhi-Yuan (李志远), Cheng Bing-Ying (程丙英), Zhang Dao-Zhong (张道中)   

  1. Institute of Physics, Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Beijing 100080, China
  • Received:2005-10-10 Revised:2005-12-27 Online:2006-03-20 Published:2006-03-20
  • Supported by:
    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： 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.

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.

Key words: negative refraction, photonic crystal

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
42.30.-d (Imaging and optical processing)