Chin. Phys. Lett.  2005, Vol. 22 Issue (8): 2073-2076    DOI:
Original Articles |
Verification and Calculation of Negative Refractive Indices of a Meta-Material by Numerical Method
SUI Qiang1,2;LIU Ci-Xiang1;LI Chao1;LI Fang1
1Institute of Electronics, Chinese Academy of Sciences, Beijing 100080 2School of Information, Communication University of China, Beijing 100024
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SUI Qiang, LIU Ci-Xiang, LI Chao et al  2005 Chin. Phys. Lett. 22 2073-2076
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Abstract The verification and calculation of the negative refractive index of a meta-material is carried out by the finite-difference time-domain method. A slab and a prism of the meta-material are simulated. A genuine plane wave is generated by a two-direction periodic boundary condition (PBC) in the slab model. Based on an advanced phase extraction technique, the negative refractive index of the meta-material is verified by phase velocity measurement in the slab and prism measurement. From our results, not only the phenomenon of backward phase propagation but also the negative refraction is clearly observed. The index is also calculated precisely. The results from the two models are consistent.
Keywords: 78.20.Ci      41.20.Jb      42.70.Qs     
Published: 01 August 2005
PACS:  78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))  
  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
  42.70.Qs (Photonic bandgap materials)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I8/02073
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