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Journal Articles Optics Express Year : 2016

Transverse circular-polarized Bessel beam generation by inward cylindrical aperture distribution,

Abstract

In this paper the focusing capability of a radiating aperture implementing an inward cylindrical traveling wave tangential electric field distribution directed along a fixed polarization unit vector is investigated. In particular, it is shown that such an aperture distribution generates a non-diffractive Bessel beam whose transverse component (with respect to the normal of the radiating aperture) of the electric field takes the form of a zero-th order Bessel function. As a practical implementation of the theoretical analysis, a circular-polarized Bessel beam launcher, made by a radial parallel plate waveguide loaded with several slot pairs, arranged on a spiral pattern, is designed and optimized. The proposed launcher performance agrees with the theoretical model and exhibits an excellent polarization purity.

Dates and versions

hal-01342204 , version 1 (05-07-2016)

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Santi Concetto Pavone, Mauro Ettorre, Massimiliano Casaletti, Matteo Albani. Transverse circular-polarized Bessel beam generation by inward cylindrical aperture distribution,. Optics Express, 2016, 24 (10), pp.11103-11111. ⟨10.1364/OE.24.011103⟩. ⟨hal-01342204⟩
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