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 an analogue to wave condensation that is well known in hydrodynamic 2D turbulence.
Hydrodynamic 2D turbulence and spatial beam condensation in multimode optical fibers / Podivilov, E.V., Kharenko, D.S., Gonta, V.A., Krupa, K., Sidelnikov, O.S., Turitsyn, S., Fedoruk, M.P., Babin, S.A., Wabnitz, S.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 122:10(2019). [10.1103/PhysRevLett.122.103902]
Hydrodynamic 2D turbulence and spatial beam condensation in multimode optical fibers
Wabnitz, S.
2019
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 an analogue to wave condensation that is well known in hydrodynamic 2D turbulence.| File | Dimensione | Formato | |
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