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

Journal Article · · Optics Letters
DOI:https://doi.org/10.1364/OL.43.000927· OSTI ID:1435311

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.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725; FG02-01ER45916; FG02-09ER4655; FG02-09ER46554
OSTI ID:
1435311
Alternate ID(s):
OSTI ID: 1420366; OSTI ID: 1597874
Journal Information:
Optics Letters, Vol. 43, Issue 4; ISSN 0146-9592
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (1)

Spatially and spectrally resolved orbital angular momentum interactions in plasmonic vortex generators journal March 2019

Figures / Tables (4)