Markos P, Soukoulis C M
Research Center of Crete, 71110 Heraklion, Crete, Greece.
Opt Lett. 2003 May 15;28(10):846-8. doi: 10.1364/ol.28.000846.
We analyze the transmission and reflection of electromagnetic waves calculated from transfer matrix simulations of periodic arrangements of thin metallic wires. The effective permittivity and the absorption of the arrangements of wires are determined. Their dependence on the wire thickness and the conductance of the metallic wires is studied. The cutoff frequency, or effective plasma frequency, is obtained and compared with analytical predictions. It is shown that the periodic arrangement of wires exhibits a frequency region in which the real part of the permittivity is negative while its imaginary part is very small. This behavior is seen for wires with thickness as small as 17 microm with a lattice constant of 3.33 mm.
我们分析了由细金属线周期性排列的转移矩阵模拟计算得出的电磁波的传输和反射。确定了线排列的有效介电常数和吸收率。研究了它们对金属线厚度和电导率的依赖性。获得了截止频率或有效等离子体频率，并与解析预测结果进行了比较。结果表明，线的周期性排列呈现出一个频率区域，其中介电常数的实部为负，而虚部非常小。对于厚度小至17微米、晶格常数为3.33毫米的金属线，观察到了这种行为。
