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arXiv · 1711.08115

Surface plasmon polaritons in the ultraviolet region

E. D. Chubchev·I. A. Nechepurenko·A. V. Dorofeenko·A. P. Vinogradov·A. A. Lisyansky
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Abstract

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.

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E. D. Chubchev, I. A. Nechepurenko, A. V. Dorofeenko, A. P. Vinogradov, A. A. Lisyansky. 2017-11-22. Surface plasmon polaritons in the ultraviolet region. https://doi.org/10.1364/oe.26.009050

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