Photonic spin Hall effect by the spin-orbit interaction in a metasurface with elliptical nano-structures

被引：22

作者：

Wang, Ying-Hua ^{[1
]}

Jin, Ren-Chao ^{[1
]}

Li, Jia-Qi ^{[1
]}

Zhong, Fan ^{[2
,3
]}

Liu, Hui ^{[2
,3
]}

Kim, Inki ^{[4
]}

Jo, Yongjoon ^{[4
]}

Rho, Junsuk ^{[4
,5
]}

Dong, Zheng-Gao ^{[1
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Sch Phys, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[4] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 37673, South Korea

[5] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea

来源：

APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 10期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

SURFACE-PLASMON POLARITONS; OPTICAL NEAR-FIELD; ANGULAR-MOMENTUM; GENERATION; METAMATERIAL; RADIATION; VORTICES; LIGHT;

D O I：

10.1063/1.4978520

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The metasurface with elliptical nano-structures containing doubly degenerate geometrical charge is designed to investigate the enhanced spin-orbit optical interactions, numerically as well as experimentally. It is found that localized surface plasmon (LSP) resonance with orbital angular momentum (i.e., rotating SP vortex mode carrying extrinsic orbital angular momentum) can be induced under linearly polarized illumination. On the contrary, the LSP resonance without orbital angular momentum is formed under circularly polarized illumination. Moreover, based on the different LSP modes as results of spin-orbit interaction with alternative geometrical charge, directional propagations of surface plasmon polariton in two orthogonal trajectories depending on spin states of the incident light are presented with experimental demonstration, a phenomenon called photonic spin Hall effect.

引用

页数：5

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