Pairing an epsilon-negative slab with a mu-negative slab:: Resonance, tunneling and transparency
Pairing an epsilon-negative slab with a mu-negative slab:: Resonance, tunneling and transparency
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DOI：
10.1109/tap.2003.817553
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发表时间：
2003-10-01
影响因子：
5.7
通讯作者：
Engheta, N
中科院分区：
文献类型：
--
作者：
Al첫, A;Engheta, N
在这里，我们分析了横磁（TM）波与一对平板的相互作用，一个是ε-负（ENG）层，其中的介电常数的真实的部分被假定为负的，而其磁导率具有正的真实的部分，另一个是μ-负（MNG）层，其磁导率的真实的部分为负，但其介电常数具有正的真实的部分。虽然波与每个板本身的相互作用具有可预测的功能，我们表明，这种ENG和MNG板的并列和配对，在一定条件下，可能会导致一些不寻常的功能，如共振，完全隧道，零反射和透明度。分析了双平板结构内外的场分布，研究了双平板结构中坡印亭矢量的分布。使用等效传输线模型，我们得到了共振，完全隧穿和透明的条件，我们证明和解释这些共振配对结构中的场行为。显着的特点的隧道条件，如材料参数，板厚度，耗散和入射角的作用进行了讨论。ENG-MNG对和与“双负”介质并列的常规材料的板对之间的类比和对应也被讨论。最后，提出了一个概念性的想法，这种“匹配”的无损，ENG-MNG对在“理想”的图像位移和图像重建的潜在应用。
Here, we analyze the transverse-magnetic (TM) wave interaction with a pair of slabs, one being an epsilon-negative (ENG) layer in which the real part of permittivity is assumed to be negative while its permeability has positive real part, and the other being a mu-negative (MNG) layer that has the real part of its permeability negative but its permittivity has positive real part. Although wave interaction with each slab by itself has predictable features, we show that the juxtaposition and pairing of such ENG and MNG slabs may, under certain conditions, lead to some unusual features, such as resonance, complete tunneling, zero reflection and transparency. The field distributions inside and outside such paired slabs are analyzed, and the Poynting vector distributions in such structures are studied. Using equivalent transmission-line models, we obtain the conditions for the resonance, complete tunneling and transparency, and we justify and explain the field behavior in these resonant paired structures. Salient features of the tunneling conditions, such as the roles of material parameters, slab thicknesses, dissipation, and angle of incidence are discussed. The analogy and correspondence between the ENG-MNG pair and the pair of a slab of conventional material juxtaposed with a "double-negative" medium is also discussed. Finally, a conceptual idea for a potential application of such a "matched" lossless; ENG-MNG pair in "ideal" image displacement and image reconstruction is proposed.