Nondiffracting Bessel plasmons

Carlos J. Zapata-Rodríguez; Slobodan Vuković; Milivoj R. Belić; David Pastor; Juan J. Miret

doi:10.1364/OE.19.019572

Nondiffracting Bessel plasmons

Carlos J. Zapata-Rodríguez^*, Slobodan Vuković, Milivoj R. Belić, David Pastor, Juan J. Miret

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

We report on the existence of nondiffracting Bessel surface plasmon polaritons (SPPs), advancing at either superluminal or subluminal phase velocities. These wave fields feature deep subwavelength FWHM, but are supported by high-order homogeneous SPPs of a metal/dielectric (MD) superlattice. The beam axis can be relocated to any MD interface, by interfering multiple converging SPPs with controlled phase matching. Dissipative effects in metals lead to a diffraction-free regime that is limited by the energy attenuation length. However, the ultra-localization of the diffracted wave field might still be maintained by more than one order of magnitude.

Original language	English
Pages (from-to)	19572-19581
Number of pages	10
Journal	Optics Express
Volume	19
Issue number	20
DOIs	https://doi.org/10.1364/OE.19.019572
Publication status	Published - 26 Sept 2011
Externally published	Yes

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AU - Vuković, Slobodan

AU - Belić, Milivoj R.

AU - Pastor, David

AU - Miret, Juan J.

PY - 2011/9/26

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Nondiffracting Bessel plasmons

Abstract

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