Anomalous dispersion in one-dimensional plasma photonic crystals |
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Authors: | Xiang-kun Kong Hong-wei Yang |
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Institution: | a Department of Foundation, Zhenjiang Watercraft College of the PLA, Zhenjiang 212003, China b College of Science, Nanjing Agricultural University, Nanjing 210095, China c College of Information Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract: | The anomalous dispersion in one-dimensional plasma photonic crystals (1-DPPCs) is studied. The width of band pass and band gap are compressed, the phase velocity decreases and the cup-off frequency comes close to the frequency of plasma when EM wave oblique incidence on 1-DPPCs. The band gaps are affected by the thickness of plasma, the dielectric constant of the dielectric material, the plasma density and the angle of incidence. Superluminal negative group velocity is discovered in this study. This character is interesting for scientists and may have a potential application. |
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Keywords: | Plasma photonic crystals Anomalous dispersion Band gap |
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