| 半无限一维光子晶体在满足平均折射率等于零时的表面态 |
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| 引用本文： | 王振德.半无限一维光子晶体在满足平均折射率等于零时的表面态[J].江西科学,2008,26(6):848-850. |
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| 作者姓名： | 王振德 |
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| 作者单位： | 南昌大学物理系,江西,南昌,330031 |
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| 基金项目： | 国家自然科学基金
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| 摘 要： | 运用传输矩阵方法和Bloch定理，研究了以色散介质为背景，半无限一维光子晶体在满足平均折射率等于零条件下的表面波特性，发现在一定的堆积次序下存在群速度为负的表面态，此时表面波的波矢和能流方向相反，并讨论了该情况下表面态的模式简并情况。
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| 关 键 词： | 半无限光子晶体 表面态 负折射率 |
Surface States of Semi-infinite One-dimensional Photonic Crystals under the Condition that the Average Refractive Index Equals Zero |
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| WANG Zhen-de.Surface States of Semi-infinite One-dimensional Photonic Crystals under the Condition that the Average Refractive Index Equals Zero[J].Jiangxi Science,2008,26(6):848-850. |
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| Authors: | WANG Zhen-de |
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| Institution: | WANG Zhen-de ( Physics Department, Nanchang University, Jiangxi Nanchang 330031 PRC) |
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| Abstract: | The transfer matrix and the Bloch theorem are employed to analyse the dispersion behaviour of localized surface states supported in the surface of a semi-infinite one-dimensional photonic crystals,which is adjacent to a dispersive medium,under the condition that the average refractive index equals zero.There will be negative group velocity of the surface modes at suitable stack sequences;in this case,the energy flow is backward with respect to the wave vector.And we discuss the mode degeneracy of surface states under this circumstance. |
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| Keywords: | Semi-infinite photonic crystals Surface states Negative refractive index |
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