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Updated: Sep 2, 2025

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Published on: December 15, 2021
Intense Wave Formation from Multiple Soliton Fusion and the Role of Extra Dimensions
Feifei Xin1,2, Ludovica Falsi1, Davide Pierangeli1,3
1Dipartimento di Fisica, Università di Roma "La Sapienza," 00185 Rome, Italy.
Abstract:
We experimentally and numerically explore the role of dimensionality in multiple (three or more) soliton fusion supported by nonreciprocal energy exchange. Three-soliton fusion into an intense wave is found when an extra dimension, with no broken inversion symmetry, is involved. The phenomenon is observed for 2+1D spatial waves in photorefractive crystals, where solitons are supported by a spatially local saturated Kerr-like self-focusing and fusion is driven by the leading nonlocal correction, the spatial analog of the nonlinear Raman effect.
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