Presentation
22 August 2020 Non-plasmonic nanoantennas for field-enhanced spectroscopy beyond the plasmonic limit
Author Affiliations +
Abstract
Dielectric nanostructures with a high refractive index and a low optical loss have recently attracted considerable attention as an alternative to plasmonic nanostructures. The electromagnetic multipoles excited in the high-index dielectric nanostructures enable the manipulation of light beyond the diffraction limit and offer high electromagnetic field enhancement comparable to that exhibited by the plasmonic nanostructures. Here, we demonstrate all-dielectric field enhanced spectroscopy using high-index dielectric nanoantenna and metasurface, enabling us to perform Raman and Infrared spectroscopies with single molecule detection sensitivity.
Conference Presentation
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Taka-aki Yano and Takuo Tanaka "Non-plasmonic nanoantennas for field-enhanced spectroscopy beyond the plasmonic limit", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 1146218 (22 August 2020); https://doi.org/10.1117/12.2568851
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KEYWORDS
Plasmonics

Field spectroscopy

Nanoantennas

Spectroscopy

Nanostructures

Dielectrics

Electromagnetism

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