基于界面算子-同伦法对有损耗的金属光子晶体能带结构的分析

发布时间：2018-03-23 22:14

  本文选题：光电子学　切入点：金属光子晶体　出处：《激光与光电子学进展》2017年07期

【摘要】：求解分析了有损耗情况下二维金属光子晶体的能带结构。在无损耗自由电子模型下,利用界面算子法得到了横磁模式和能带结构。考虑有损耗的Drude模型,并引入同伦法对本征频带进行修正,得到其相应的虚部。结果表明,损耗在表面等离子体频率处存在一个极大值;当频率改变时,损耗急剧减小,并随着倒格矢量值的变化而改变。即使考虑金属损耗,实部频率变化不明显。界面算子法与同伦法的结合为金属光子晶体的研究提供了较好的技术支持。
[Abstract]:The energy band structure of two-dimensional metal photonic crystal with loss is solved and analyzed. In the lossless free electron model, the transverse magnetic mode and the band structure are obtained by using the interface operator method. The Drude model with loss is considered. The homotopy method is introduced to modify the intrinsic band, and the corresponding imaginary part is obtained. The results show that there is a maximum at the frequency of the surface plasma, and when the frequency changes, the loss decreases sharply. Even when the metal loss is considered, the real part frequency change is not obvious. The combination of the interface operator method and the homotopy method provides a good technical support for the study of metal photonic crystals.
【作者单位】： 广西大学材料科学与工程学院;
【基金】：国家自然科学基金(11672077) 广西自然科学基金(2015jjDA60007)
【分类号】：TG111
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本文编号：1655428