Observation of the spin-based plasmonic effect in nanoscale structures
Observation of the spin-based plasmonic effect in nanoscale structures
复制标题
DOI：
10.1103/physrevlett.101.043903
复制
发表时间：
2008-07-25
影响因子：
8.6
通讯作者：
Hasman, E.
中科院分区：
文献类型：
--
作者：
Gorodetski, Y.;Niv, A.;Hasman, E.
观察到表面等离子体现象依赖于圆偏振入射光(自旋)的左手效应。在我们的实验中得到的偏振相关的近场强度分布归因于光与各向异性和非均匀纳米结构相互作用产生的几何相位的存在。在等离子体微腔中得到了具有自旋相关拓扑电荷的近场涡旋表面模。在等离子体结构中还发现了显著的偏振敏感聚焦现象。
Observation of surface-plasmon phenomena that are dependent upon the handedness of the circularly polarized incident light (spin) is presented. The polarization-dependent near-field intensity distribution obtained in our experiment is attributed to the presence of a geometric phase arising from the interaction of light with an anisotropic and inhomogeneous nanoscale structure. A near-field vortex surface mode with a spin-dependent topological charge was obtained in a plasmonic microcavity. The remarkable phenomenon of polarization-sensitive focusing in a plasmonic structure was also demonstrated.