Plasmonic nanojet: an experimental demonstration

Igor V. Minin, Oleg V. Minin, Igor A. Glinskiy, Rustam A. Khabibullin, Radu Malureanu, Andrei V. Lavrinenko, Dmitry I. Yakubovsky, Aleksey V. Arsenin, Valentyn S. Volkov, Dmitry S. Ponomarev

Research output: Contribution to journalArticle

Abstract

We propose and study a microstructure based on a dielectric cuboid placed on a thin metal film that can act as an efficient plasmonic lens allowing the focusing of surface plasmons at the subwavelength scale. Using numerical simulations of surface plasmon polariton (SPP) field intensity distributions, we observe high-intensity subwavelength spots and formation of the plasmonic nanojet (PJ) at the telecommunication wavelength of 1530 nm. The fabricated microstructure was characterized using amplitude and phase-resolved scattering-type scanning near-field optical microscopy. We show the first experimental observation of the PJ effect for the SPP waves. Such a novel, to the best of our knowledge, and simple platform can provide new pathways for plasmonics, high-resolution imaging, and biophotonics, as well as optical data storage.

Original languageEnglish
Pages (from-to)3244-3247
Number of pages4
JournalOptics Letters
Volume45
Issue number12
DOIs
Publication statusPublished - 15 Jun 2020

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Minin, I. V., Minin, O. V., Glinskiy, I. A., Khabibullin, R. A., Malureanu, R., Lavrinenko, A. V., Yakubovsky, D. I., Arsenin, A. V., Volkov, V. S., & Ponomarev, D. S. (2020). Plasmonic nanojet: an experimental demonstration. Optics Letters, 45(12), 3244-3247. https://doi.org/10.1364/OL.391861