arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0909.0778physics.optics
收藏

一种简单通用的平面异向介质分析方法

A simple and versatile analytical approach for planar metamaterials

J. Petschulat, A. Chipouline, A. Tuennermann, T. Pertsch, C. Menzel, C. Rockstuhl, T. Paul, F. Lederer

摘要:

我们提出了一个分析模型,它允许计算的有效材料参数的平面超材料组成的任意单元格(元原子)形成的一组直线部分的潜在不同的形状。该模型利用了电线中的谐振电偶极子振荡及其相互耦合。元原子的相关形式决定了实际的耦合特征。这一过程代表了一种不同的元原子的积木模型。基于描述单个偶极振荡及其相互耦合的参数,可以确定整个有效超材料张量。通过了解某个元原子的这些参数,可以系统地修改它以创建所需的特征。执行这样的修改有效的材料特性以及远场强度保持可预测。作为一个例子,该模型被应用于揭示光学活性的发生,如果分裂环谐振腔的元原子被修改为L-或S-形的元原子。

英文摘要:

We present an analytical model which permits the calculation of effective material parameters for planar metamaterials consisting of arbitrary unit cells (metaatoms) formed by a set of straight wire sections of potentially different shape. The model takes advantage of resonant electric dipole oscillations in the wires and their mutual coupling. The pertinent form of the metaatom determines the actual coupling features. This procedure represents a kind of building block model for quite different metaatoms. Based on the parameters describing the individual dipole oscillations and their mutual coupling the entire effective metamaterial tensor can be determined. By knowing these parameters for a certain metaatom it can be systematically modified to create the desired features. Performing such modifications effective material properties as well as the far field intensities remain predictable. As an example the model is applied to reveal the occurrence of optical activity if the split ring resonator metaatom is modified to L- or S-shaped metaatoms.

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。

↑