Dissipative light bullets in a doped and weakly nonlocal optical fiber
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Publication:6150615
DOI10.1016/J.PHYSLETA.2023.129291arXiv2305.10844OpenAlexW4390277806MaRDI QIDQ6150615
Timoléon Crépin Kofané, Ghislaine Flore Kabadiang Ngon, Conrad Bertrand Tabi
Publication date: 9 February 2024
Published in: Physics Letters. A (Search for Journal in Brave)
Abstract: The letter introduces an extended (3+1)-dimensional [(3+1)D] nonlocal cubic complex Ginzburg-Landau equation describing the dynamics of dissipative light bullets in optical fiber amplifiers under the interplay between dopants and a spatially nonlocal nonlinear response. The model equation includes the effects of fiber dispersion, linear gain, nonlinear loss, fiber nonlinearity, atomic detuning, linear and nonlinear diffractive transverse effects, and nonlocal nonlinear response. A system of coupled ordinary differential equations for the amplitude, temporal, and spatial pulse widths and position of the pulse maximum, unequal wavefront curvatures, chirp parameters, and phase shift is derived using the variational technique. A stability criterion is established, where a domain of dissipative parameters for stable steady-state solutions is found. Direct integration of the proposed nonlocal evolution equation is performed, which allows us to investigate the evolution of the Gaussian beam along a doped nonlocal optical fiber, showing stable self-organized dissipative spatiotemporal light bullets.
Full work available at URL: https://arxiv.org/abs/2305.10844
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