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Article Dans Une Revue Physical Review A Année : 2020

Observation and analysis of creation, decay, and regeneration of annular soliton clusters in a lossy cubic-quintic optical medium

Résumé

We observe and analyze formation, decay, and subsequent regeneration of ring-shaped clusters of (2+1)-dimensional spatial solitons (filaments) in a medium with cubic-quintic (focusing-defocusing) self-interaction and strong dissipative nonlinearity. The cluster of filaments, which remains stable over ≈17.5 Rayleigh lengths, is produced by the azimuthal modulational instability from a parent ring-shaped beam with embedded vorticity l=1. In the course of still longer propagation, the stability of the soliton cluster is lost under the action of nonlinear losses. The annular cluster is then spontaneously regenerated due to power transfer from the reservoir provided by the unsplit part of the parent vortex ring. Thus, a secondary interval of the robust propagation of the regenerated cluster is identified. The experiments use a laser beam (at wavelength 800 nm), built of pulses with temporal duration 150 fs, at the repetition rate of 1 kHz, propagating in a cell filled by liquid carbon disulfide. Numerical calculations, based on a modified nonlinear Schrödinger equation which includes the cubic-quintic refractive terms and nonlinear losses, provide results in close agreement with the experimental findings.
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Dates et versions

hal-02972023 , version 1 (27-05-2021)

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Albert Reyna, Henrique Baltar, Emeric Bergmann, Anderson Amaral, Edilson Falcão-Filho, et al.. Observation and analysis of creation, decay, and regeneration of annular soliton clusters in a lossy cubic-quintic optical medium. Physical Review A, 2020, 102 (3), pp.033523. ⟨10.1103/PhysRevA.102.033523⟩. ⟨hal-02972023⟩
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