arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1612.04545physics.opticscond-mat.mes-hall
收藏

二维材料中通道等离子体激元的普适描述

Universal description of channel plasmons in two-dimensional materials

P. A. D. Gonçalves, Sergey I. Bozhevolnyi, N. Asger Mortensen, N. M. R. Peres

摘要:

抑制表面等离子体激元以控制其传播方向对于未来的光电子器件具有极其重要的意义。在这里,我们发展了一种有效折射率方法来描述和表征二维材料的通道等离子体激元(CPP)沿V形通道引导的属性。专注于石墨烯的情况下,我们推导出一个通用的薛定谔方程,从该方程可以确定在任何给定频率的石墨烯CPP和相应的场分布的色散关系,因为它们取决于结构的几何形状。然后将结果与更严格的理论进行比较,获得了非常好的一致性。我们的计算表明,石墨烯和其他二维材料中的CPP是实现光的深亚波长波导的有吸引力的候选者,具有作为下一代可调谐光子器件的有源元件的潜力。

英文摘要:

Channeling surface plasmon-polaritons to control their propagation direction is of the utmost importance for future optoelectronic devices. Here, we develop an effective-index method to describe and characterize the properties of 2D material's channel plasmon-polaritons (CPPs) guided along a V-shaped channel. Focusing on the case of graphene, we derive a universal Schrödinger-like equation from which one can determine the dispersion relation of graphene CPPs and corresponding field distributions at any given frequency, since they depend on the geometry of the structure alone. The results are then compared against more rigorous theories, having obtained a very good agreement. Our calculations show that CPPs in graphene and other 2D materials are attractive candidates to achieve deep subwavelength waveguiding of light, holding potential as active components for the next generation of tunable photonic devices.

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。

↑