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arXiv · 1811.10239

Hydrodynamic 2D turbulence and spatial beam condensation in multimode optical fibers

E. V. Podivilov·D. S. Kharenko·V. A. Gonta·K. Krupa·O. S. Sidelnikov·S. Turitsyn·M. P. Fedoruk·S. A. Babin·S. Wabnitz
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Abstract

We show that Kerr beam self-cleaning results from parametric mode mixing instabilities, that generate a number of nonlinearly interacting modes with randomized phases -- optical wave turbulence, followed by a direct and inverse cascade towards high mode numbers and condensation into the fundamental mode, respectively. This optical self-organization effect is analogue to wave condensation that is well-known in hydrodynamic 2D turbulence.

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E. V. Podivilov, D. S. Kharenko, V. A. Gonta, K. Krupa, O. S. Sidelnikov, S. Turitsyn, M. P. Fedoruk, S. A. Babin, S. Wabnitz. 2018-11-26. Hydrodynamic 2D turbulence and spatial beam condensation in multimode optical fibers. https://doi.org/10.1103/physrevlett.122.103902

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