Flexible transformation plasmonics using graphene
Flexible transformation plasmonics using graphene
复制标题
使用石墨烯的灵活变换等离子体
DOI：
10.1364/oe.21.010475
复制
发表时间：
2013-05-06
期刊：
影响因子：
3.8
通讯作者：
Cui, Tie Jun
中科院分区：
文献类型：
--
作者：
Lu, Wei Bing;Zhu, Wei;Cui, Tie Jun
由于在新型等离子体器件中广泛应用，表面等离子体激元（SPPs）的柔性控制是一个重要而有趣的问题。变换光学（TO）提供了限制SPP在刚性弯曲/不均匀表面上传播的能力，或者控制SPP在平面上的流动。然而，TO还不允许我们限制、操纵和控制柔性曲面上的SPP波。在这里，我们建议使用to和石墨烯来限制和自由控制柔性spp。我们发现SPP波可以自然受限并在弯曲或不均匀的石墨烯表面上传播，并且几乎没有弯曲和辐射损失，并且受限的SPP可以通过TO进一步操纵和控制。介绍了柔性等离子体器件，包括弯曲波导、分波器和曲面上的吕尼堡透镜。再加上石墨烯固有的柔韧性，它可以作为一个很好的平台来实现等离子体的柔性转化。(C) 2013年美国光学学会
The flexible control of surface plasmon polaritons (SPPs) is important and intriguing due to its wide application in novel plasmonic devices. Transformation optics (TO) offers the capability either to confine the SPP propagation on rigid curved/uneven surfaces, or to control the flow of SPPs on planar surfaces. However, TO has not permitted us to confine, manipulate, and control SPP waves on flexible curved surfaces. Here, we propose to confine and freely control flexible SPPs using TO and graphene. We show that SPP waves can be naturally confined and propagate on curved or uneven graphene surfaces with little bending and radiation losses, and the confined SPPs are further manipulated and controlled using TO. Flexible plasmonic devices are presented, including the bending waveguides, wave splitter, and Luneburg lens on curved surfaces. Together with the intrinsic flexibility, graphene can be served as a good platform for flexible transformation plasmonics. (C) 2013 Optical Society of America