arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.0404physics.optics
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超材料和金属-介质超晶格中的表面Bloch波

Surface Bloch waves in metamaterial and metal-dielectric superlattices

Slobodan M. Vukovic, Ilya V. Shadrivov, Yuri S. Kivshar

摘要:

本文研究了电磁布洛赫波在由异向介质层和介质层交替形成的半无限周期结构中的性质。我们推导并分析了色散关系的TE和TM偏振的表面布洛赫模式的长波长限制,磁超材料与负折射和金属-介电等离子体超晶格。我们发现,在亚波长范围内的体模的特点是由三个不同的折射率(“三折射率”),而表面模式可以传播平行于布洛赫波矢,并沿超晶格和半无限电介质之间的界面。

英文摘要:

We study the properties of electromagnetic Bloch waves in semi-infinite periodic structures created by alternating metamaterial and dielectric layers. We derive and analyze the dispersion relations in the long-wavelength limit for both TE- and TM-polarized surface Bloch modes, for magnetic metamaterials with negative refraction and metal-dielectric plasmonic superlattices. We reveal that in the subwavelength regime the bulk modes are characterized by three different refractive indices ("tri-refringence") while the surface modes can propagate parallel to the Bloch wavevector and along the interface between superlattice and semi-infinite dielectric.

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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