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Negative Refraction and Imaging in a Triangular-Lattice Metallic Photonic-Crystal Slab |
| FENG Shuai; SUN Mei;REN Cheng;REN Kun;FENG Zhi-Fang;LI Zhi-Yuan; CHENG Bing-Ying;ZHANG Dao-Zhong |
| Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences,
Beijing 100080 |
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| Cite this article: |
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FENG Shuai, SUN Mei, REN Cheng et al 2006 Chin. Phys. Lett. 23 994-997 |
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Abstract Imaging properties of a two-dimensional photonic crystal (PC) slab consisting of a triangular lattice of metallic cylinders immersed in a dielectric background are investigated by the finite-difference time-domain technique. With the calculated field patterns of a point source placed in the vicinity of the PC slab and the corresponding equifrequency-surface contours, we find that a high-quality image can form in the opposite side of the slab in the lowest TM-polarized photonic band, and this near-field image is formed mainly by the self-collimation effect.
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| Keywords:
78.20.Ci
42.70.Qs
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Published: 01 April 2006
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| PACS: |
78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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42.70.Qs
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(Photonic bandgap materials)
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