Observation of the spin-based plasmonic effect in nanoscale structures

被引：368
|
作者：
Gorodetski, Y. [1 ]
Niv, A.
Kleiner, V.
Hasman, E.
机构：
[1] Technion Israel Inst Technol, Fac Mech Engn, Micro & Nanoopt Lab, IL-32000 Haifa, Israel
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.101.043903
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：4
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