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arXiv 1303.6572physics.optics
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磁缝波导和磁缝腔中磁等离子体激元的开关和传输

Switching and propagation of magneto-plasmon-polaritons in magnetic slot waveguides and cavities

D. Nikolova, A. J. Fisher

摘要:

本文导出了磁光有源介质金属-绝缘体-金属波导中Voigt几何中表面等离子体激元-极化激元的色散关系。通过引入磁场,打破了上下界面之间的对称性;两个界面上的场分布之间的平衡可以通过施加的场来控制。这种控制是由有限元法数值模拟的场分布周围的点偶极子放置在短波导的中心,它示出了从腔体的辐射的总发射和远场辐射的分布可以强烈修改通过调谐的磁化的波导。这提出了使用磁场来控制纳米结构中的光传播的新可能性。

英文摘要:

The dispersion relations for surface plasmon-polaritons propagating in the Voigt geometry in a metal-insulator-metal waveguide with a magneto-optically active dielectric medium are derived. The symmetry between the upper and lower interfaces is broken by the introduction of the magnetic field; the balance between the field distributions on the two interfaces can be controlled by the applied field. This control is illustrated by finite-element method numerical simulations of the field distributions around a point dipole placed in the centre of the short waveguide; it is shown that both the total emission of radiation from the cavity and the distribution of the far-field radiation can be strongly modified by tuning the magnetisation of the waveguide. This raises the novel possibility of using magnetic fields to control light propagation in nanostructures.

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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