The directional excitation of surface plasmon polaritons by radially polarized beam with multiple off-axis vortices

doi:10.1016/j.optcom.2019.03.050

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	The directional excitation of surface plasmon polaritons by radially polarized beam with multiple off-axis vortices
	Y.X.Dong; S.X.Xi; B.W.Zhu; X.L.Wang; Q.Q.Mu; S.Wang; Z.Q.Zhu
	2019
发表期刊	Optics Communications
ISSN	0030-4018
卷号	443 页码:197-201
摘要	A method of directional excitation of surface plasmon polaritons (SPPs) is proposed by using radially polarized beam loaded with multiple off-axis vortices. Based on the Kretschmann-Raether three-layer structure, the theory expression for the distribution of SPPs on the silver film surface excited by the radially polarized beam loaded with multiple off-axis vortices is derived. Accordingly, the influence of multiple off-axis vortices on the distribution of focus field and SPPs is analyzed, in which the asymmetry of the SPPs caused by the offaxis vortex is found out. On this basis, the SPPs are directionally excited by adjusting the arrangement and position of multiple off-axis vortices reasonably. This work demonstrated that the off-axis vortices introduce a new degree of freedom for SPPs manipulation, and that the excitation and propagation of SPPs can be dynamically controlled by judiciously arranging the multiple off-axis vortices. Without specially designed metal structures, the all-optical controlled method for SPPs manipulation has great potential in plasmonic tweezers and plasmonic devices.
关键词	Polarization,Optical vortices,Subwavelength structures,Laser beam,shaping,Surface plasmons,light,Optics
DOI	10.1016/j.optcom.2019.03.050
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63406
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y.X.Dong,S.X.Xi,B.W.Zhu,et al. The directional excitation of surface plasmon polaritons by radially polarized beam with multiple off-axis vortices[J]. Optics Communications,2019,443:197-201.
APA	Y.X.Dong.,S.X.Xi.,B.W.Zhu.,X.L.Wang.,Q.Q.Mu.,...&Z.Q.Zhu.(2019).The directional excitation of surface plasmon polaritons by radially polarized beam with multiple off-axis vortices.Optics Communications,443,197-201.
MLA	Y.X.Dong,et al."The directional excitation of surface plasmon polaritons by radially polarized beam with multiple off-axis vortices".Optics Communications 443(2019):197-201.

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