| 电磁波传播中的超光速群速和负群速 |
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| 引用本文： | 黄志洵,逯贵祯,关健.电磁波传播中的超光速群速和负群速[J].中国传媒大学学报,2004(Z1). |
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| 作者姓名： | 黄志洵 逯贵祯 关健 |
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| 作者单位： | 北京广播学院，北京广播学院，北京广播学院 北京 100024，北京 100024，北京 100024 |
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| 摘 要： | 分析了产生群速超光速和负群速的条件。讨论了截止波导中消失波条件下的超光速群速和负群速。用模拟同轴光子晶体的结构进行实验,获得了阻带中的超光速群速,Vg=(1.5-2.4)c。
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| 关 键 词： | 超光速群速 负群速 截止波导 同轴光子晶体 |
Superluminal and Negative Group Velocity in Electro-magnetic Wave Propagation |
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| HUANG Zhi-xun,LU Gui-zhen,GUAN Jian.Superluminal and Negative Group Velocity in Electro-magnetic Wave Propagation[J].Journal of Communication University of China Science and TEchnology,2004(Z1). |
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| Authors: | HUANG Zhi-xun LU Gui-zhen GUAN Jian |
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| Abstract: | In this paper, a penetrating analysis is first made of the superluminal and negative group velocities that occur in the EM wave propagation. Discussed then are the superluminal and negative group velocities which are in the state of evanescent waves in the waveguide below-cutoff (WBCO). Through an experiment in the coaxial photonic crystal a group velocity of 1.5 - 2.4 times the speed of light are observed in the stop band. |
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| Keywords: | Superluminal group velocity Negative group velocity Coaxial photonic crystal Waveguide below-cutoff(WBCO) |
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