Optical Spin Hall Effects in Plasmonic Chains
Optical Spin Hall Effects in Plasmonic Chains
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DOI：
10.1021/nl2004835
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发表时间：
2011-05-01
期刊：
影响因子：
10.8
通讯作者：
Hasman, Erez
中科院分区：
文献类型：
--
作者：
Shitrit, Nir;Bretner, Itay;Hasman, Erez
观察到了自旋相关动量重定向所表现出的光学自旋霍尔效应。仅由耦合局域等离子链的曲率引起的效应被认为是局域各向同性的局域各向同性势垒效应，而局域各向异性的局域各向异性势场效应是由光学自旋和沿链旋转的等离子体模的局域各向异性相互作用产生的。在圆曲率中观察到波前相位错，位错强度因局部各向异性效应而增强。
Observation of optical spin Hall effects (OSHEs) manifested by a spin-dependent momentum redirection is presented. The effect occurring solely as a result of the curvature of the coupled localized plasmonic chain is regarded as the locally isotropic OSHE, while the locally anisotropic OSHE arises from the interaction between the optical spin and the local anisotropy of the plasmonic mode rotating along the chain. A wavefront phase dislocation was observed in a circular curvature, in which the dislocation strength was enhanced by the locally anisotropic effect.