Two-dimensional accelerating bessel beams
V.V. Kotlyar, A.A. Kovalev, S.G. Zaskanov

Image Processing Systems Institute, Russian Academy of Sciences,
Samara State Aerospace University

Full text of article: Russian language.

Abstract:
All well-known nonparaxial accelerating two-dimensional light beams propagate along curve trajectories, which do not bend more than a semicircle. In a recent paper, Optics Express 22, 7124 (2014) authors suggest to use additional mirror to generate an accelerating beam with its trajectory bending more than a semicircle, but less than the entire circle. In this paper, we show how to create two-dimensional light field with power flow circulating along a circle (ring). In addition, we consider accelerating nonparaxial asymmetric two-dimensional Bessel beams, which can be obtained from the conventional two-dimensional Bessel beam by complex displacement of the beam center. Simulation shown that with increasing asymmetry parameter curved path of the Bessel beam is shortened, but the relative magnitude of the side lobes (compared to the central lobe) simultaneously decreases.

Key words:
accelerating laser beam, Bessel mode, asymmetric Bessel mode, circular trajectory, sidelobe suppression.

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