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Characterization of graphene-based photonic crystal in THz spectrum with finite-difference time domain method |
Lin Hai (林海)a, Xu Di (徐笛)a, M. F. Pantojab, S. G. Garciab, Yang He-Lin (杨河林)a |
a College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China; b Department of Electromagnetic and Physics Matter, University of Granada, Spain |
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Abstract Graphene has been considered as a promising material which may find applications in the THz science. In this work, we numerically investigate tunable photonic crystals in the THz range based on stacked graphene/dielelctric layers, a complex pole-residue pair model is used to find the effective permittivity of graphene, which could be easily incorporated into the finite-difference time domain (FDTD) algorithm. Two different schemes of photonic crystal used for extending the bandgap have been simulated through this FDTD technique.
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Received: 16 January 2014
Revised: 26 March 2014
Accepted manuscript online:
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PACS:
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42.25.Bs
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(Wave propagation, transmission and absorption)
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81.05.ue
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(Graphene)
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Fund: Project supported by the Spanish Ministry of Education (Grant No. SB2010-0056), the EU FP7/2007-2013 (Grant No. 205294) (HIRF SE project), the Spanish National Projects (Grant Nos. TEC2010-20841-C04-04 and CSD2008-00068), the Junta de Andalusia Project (Grant No. P09-TIC-5327), the National Natural Science Foundation of China (Grant No. 60906030), and the Self Research Program of Central China Normal University (Grant No. 09010028). |
Corresponding Authors:
Lin Hai
E-mail: linhai.ccnu@gmail.com
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Cite this article:
Lin Hai (林海), Xu Di (徐笛), M. F. Pantoja, S. G. Garcia, Yang He-Lin (杨河林) Characterization of graphene-based photonic crystal in THz spectrum with finite-difference time domain method 2014 Chin. Phys. B 23 094203
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