Head-on excitation of tilted solitons by fragmented Bessel beams

Miroslav M. Petroski, Dejan V. Timotijević, Dragana M. Jović Savić and Jadranka M. Vasiljević

Chaos, Solitons & Fractals, 2026, vol. 202, issue P1

Abstract: This work demonstrates the formation of tilted discrete solitons via the nonlinear self-action of non-diffracting fragmented Bessel beams in photorefractive media, using a single-pass optical induction scheme that induces anisotropic refractive index modulation experimentally. Unlike typical methods for the generation of tilted solitons based on preinscribed periodic structures and tilted probe beam excitation, our approach enables soliton formation under normal (head-on) incidence of an aperiodic structure and without any prefabricated lattice. Particularly, we suggest a clarification of the mechanism underlying their formation. Appropriate localized symmetry deviations with nonlinearity lead to the formation of tilted discrete solitons. Multiple tilted soliton pairs are generated along distinct directions, determined by the number and arrangement of the Bessel beam fragments. The system exhibits high tunability: by adjusting the Bessel beam’s order, scale, phase, and input power, we gain precise control over the number, orientation, and position of the resulting solitons. This work advances the understanding of structured light propagation, offering a versatile platform for soliton generation, beam shaping, and diffraction control.

Keywords: Discrete solitons; Tilted solitons; Non-diffracting beams; Waveguiding (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:202:y:2026:i:p1:s096007792501447x

DOI: 10.1016/j.chaos.2025.117434

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