Polarization- and wavelength-resolved near-field imaging of complex plasmonic modes in Archimedean nanospirals

被引：12

作者：

Hachtel, Jordan A. ^{[1
]}

Davidson, Roderick B., II ^{[2
,3
]}

Kovalik, Elena R. ^{[4
]}

Retterer, Scott T. ^{[1
]}

Lupini, Andrew R. ^{[5
]}

Haglund, Richard F., Jr. ^{[2
]}

Lawrie, Benjamin J. ^{[3
,6
]}

Pantelides, Sokrates T. ^{[2
,3
]}

机构：

[1] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[3] Oak Ridge Natl Lab, Quantum Informat Sci Grp, Oak Ridge, TN 37831 USA

[4] Univ North Carolina Chapel Hill, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[5] Oak Ridge Natl Lab, Mat Sci & Engn Div, Oak Ridge, TN 37831 USA

[6] Oak Ridge Natl Lab, Inst Funct Imaging Mat, Oak Ridge, TN 37831 USA

来源：

OPTICS LETTERS | 2018年 / 43卷 / 04期

关键词：

CATHODOLUMINESCENCE SPECTROSCOPY; GENERATION;

D O I：

10.1364/OL.43.000927

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Asymmetric nanophotonic structures enable a wide range of opportunities in optical nanotechnology because they support efficient optical nonlinearities mediated by multiple plasmon resonances over a broad spectral range. The Archimedean nanospiral is a canonical example of a chiral plasmonic structure because it supports even-order nonlinearities that are not generally accessible in locally symmetric geometries. However, the complex spiral response makes nanoscale experimental characterization of the plasmonic near-field structure highly desirable. Here we employ high-efficiency, high-spatial-resolution cathodoluminescence imaging in a scanning transmission electron microscope to describe the spatial, spectral, and polarization response of plasmon modes in the nanospiral geometry. (C) 2018 Optical Society of America

引用

页码：927 / 930

页数：4

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