Towards an optical far-field measurement of higher-order multipole contributions to the scattering response of nanoparticles

被引:11
|
作者
Bauer, Thomas [1 ,2 ]
Orlov, Sergej [1 ,2 ]
Leuchs, Gerd [1 ,2 ,3 ]
Banzer, Peter [1 ,2 ,3 ]
机构
[1] Max Planck Inst Sci Light, D-91058 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Inst Opt Informat & Photon, D-91058 Erlangen, Germany
[3] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada
关键词
CYLINDRICAL-VECTOR BEAMS; PLASMON RESONANCE; SURFACE-PLASMONS; LIGHT; NANOPRISMS; NANOANTENNA; EMISSION; DEVICES; RANGE; SHAPE;
D O I
10.1063/1.4914117
中图分类号
O59 [应用物理学];
学科分类号
摘要
We experimentally show an all-optical multipolar decomposition of the lowest-order eigenmodes of a single gold nanoprism using azimuthally and radially polarized cylindrical vector beams. By scanning the particle through these tailored field distributions, the multipolar character of the eigenmodes gets encoded into 2D-scanning intensity maps even for higher-order contributions to the eigenmode that are too weak to be discerned in the direct far-field scattering response. This method enables a detailed optical mode analysis of individual nanoparticles. (C) 2015 AIP Publishing LLC.
引用
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页数:5
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