Surface plasmon polaritons in the ultraviolet region

We study a surface plasmon polariton mode that is strongly confined in the transverse direction and propagates along a periodically nanostructured metal-dielectric interface. We show that the wavelength of this mode is determined by the period of the structure, and may therefore, be orders of magnit...

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Bibliographic Details
Published in:arXiv.org 2017-11
Main Authors: Chubchev, E D, Nechepurenko, I A, Dorofeenko, A V, Vinogradov, A P, Lisyansky, A A
Format: Article
Language:English
Subjects:
Aluminum
Flat surfaces
Plasmonics
Polaritons
Wave propagation
Online Access:Get full text
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Summary:We study a surface plasmon polariton mode that is strongly confined in the transverse direction and propagates along a periodically nanostructured metal-dielectric interface. We show that the wavelength of this mode is determined by the period of the structure, and may therefore, be orders of magnitude smaller than the wavelength of a plasmon-polariton propagating along a flat surface. This plasmon polariton exists in the frequency region in which the sum of the real parts of the permittivities of the metal and dielectric is positive, a frequency region in which surface plasmon polaritons do not exist on a flat surface. The propagation length of the new mode can reach a several dozen wavelengths. This mode can be observed in materials that are uncommon in plasmonics, such as aluminum or sodium.
ISSN:2331-8422
DOI:10.48550/arxiv.1711.08115