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arXiv 1901.05720physics.optics
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各向同性手征材料平面界面导行的电磁表面波

Electromagnetic surface waves guided by the planar interface of isotropic chiral materials

Maimoona Naheed, Muhammad Faryad, Tom G. Mackay

发表信息：
Journal of the Optical Society of America B36 (2019) F1-F8
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摘要：

通过数值求解正则边值问题，研究了电磁表面波在两种各向同性手征材料（$\calA$和$\calB$）平面界面上的传播.将各向同性手性材料$\calB$建模为均质化复合材料，该均质化复合材料由各向同性手性组分材料和各向同性非手性、双手性组分材料的均质化产生，所述各向同性非手性、双手性组分材料的特征在于相对介电常数$\eps_a^\calB$。表面波的性质的变化进行了探讨的体积分数$f_a^\calB$的非手性组分材料的变化。表面波仅在$f_a^\calB$的特定范围内受支持;在这些范围内，在每个$f_a^\calB$值处仅支持一个表面波，其特征在于其相对波数$q$。对于$\mbox{Re} \lec \eps_a^\calB \ric > 0 $，随着$\left| \mbox{Im} \lec \eps_a^\calB \ric \right|$增加，表面波支持更大范围的$f_a^\calB$和$\left| \mbox{Im} \lec q \ric \right|$，因为这些表面波增加。对于$\mbox{Re} \lec \eps_a^\calB \ric < 0 $，随着$ \mbox{Im} \lec \eps_a^\calB \ric $增加，支持表面波传播的$f_a^\calB$的范围几乎不变，但是这些表面波的$ \mbox{Im} \lec q \ric $减小。当$\mbox{Re} \lec \eps_a^\calB \ric < 0 $时支持的表面波可以被认为类似于表面等离子体激元极化激元波，但是当$\mbox{Re} \lec \eps_a^\calB \ric > 0 $时支持的表面波可能不是。

英文摘要：

The propagation of electromagnetic surface waves guided by the planar interface of two isotropic chiral materials, namely materials $\calA$ and $\calB$, was investigated by numerically solving the associated canonical boundary-value problem. Isotropic chiral material $\calB$ was modeled as a homogenized composite material, arising from the homogenization of an isotropic chiral component material and an isotropic achiral, nonmagnetic, component material characterized by the relative permittivity $\eps_a^\calB$. Changes in the nature of the surface waves were explored as the volume fraction $f_a^\calB$ of the achiral component material varied. Surface waves are supported only for certain ranges of $f_a^\calB$; within these ranges only one surface wave, characterized by its relative wavenumber $q$, is supported at each value of $f_a^\calB$. For $\mbox{Re} \lec \eps_a^\calB \ric > 0 $, as $\left| \mbox{Im} \lec \eps_a^\calB \ric \right|$ increases surface waves are supported for larger ranges of $f_a^\calB$ and $\left| \mbox{Im} \lec q \ric \right|$ for these surface waves increases. For $\mbox{Re} \lec \eps_a^\calB \ric < 0 $, as $ \mbox{Im} \lec \eps_a^\calB \ric $ increases the ranges of $f_a^\calB$ that support surface-wave propagation are almost unchanged but $ \mbox{Im} \lec q \ric $ for these surface waves decreases. The surface waves supported when $\mbox{Re} \lec \eps_a^\calB \ric < 0 $ may be regarded as akin to surface-plasmon-polariton waves, but those supported for when $\mbox{Re} \lec \eps_a^\calB \ric > 0 $ may not.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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