arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0907.0920physics.optics
收藏

磁光子晶体的光子能带结构和本征模

Photonic band structure and eigenmodes of magnetophotonic crystals

A. B. Khanikaev, K. Yayoi, M. J. Steel, A. V. Baryshev, M. Inoue

摘要:

利用平面波展开法研究了二维和三维磁光子晶体的光子能带结构及其本征模的偏振特性。研究了磁化对光子能带结构和本征模的影响。研究了两种取向:面内磁化和垂直磁化。磁化引起的对称性破缺效应被证明是负责形成奇异的磁布洛赫模式,包括两个或更多的耦合对称和反对称布洛赫模式的相应的非磁性光子晶体。这些结果意味着非磁性光子晶体的非耦合态可以在磁性结构中被激发或耦合。我们发现磁布洛赫模的偏振态是非常复杂的。在垂直于平面磁化的特殊情况下,它们代表具有大纵向分量的面内椭圆(甚至圆)偏振波。

英文摘要:

We study photonic band structure of two- and three-dimensional magnetophotonic crystals and the polarization properties of their eigenmodes using a plane wave expansion method. The alteration of the photonic band structure and eigenmodes by magnetization are examined. Two orientations are studied: in-plane magnetization and perpendicular magnetization. The magnetization-induced symmetry breaking effects are shown to be responsible for the formation of exotic magnetic Bloch modes, comprised of two or more coupled symmetric and antisymmetric Bloch modes of the corresponding non-magnetic photonic crystal. These results imply that uncoupled states of non-magnetic photonic crystals can be excited, or become coupled, in magnetic structures. We show that the polarization state of magnetic Bloch modes is very complicated. In the particular case of perpendicular to plane magnetization they represent in-plane elliptically (or even circularly) polarized waves with large longitudinal component.

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。

↑