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Triggering filamentation using turbulence

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arxiv 1608.06526 v1 pith:6VG46JUZ submitted 2016-08-23 physics.optics nlin.PS

Triggering filamentation using turbulence

D. Eeltink , N. Berti , N. Marchiando , S. Hermelin , J. Gateau , M. Brunetti , J.P. Wolf , J. Kasparian This is my paper
classification physics.optics nlin.PS
keywords turbulencefilamentsbeamfilamentinginstabilitymodulationsingletriggering
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We study the triggering of single filaments due to turbulence in the beam path for a laser of power below the filamenting threshold. Turbulence can act as a switch between the beam not filamenting and producing single filaments. This 'positive' effect of turbulence on the filament probability, combined with our observation of off-axis filaments suggests the underlying mechanism is modulation instability caused by transverse perturbations. We hereby experimentally explore the interaction of modulation instability and turbulence, commonly associated with multiple-filaments, in the single-filament regime.

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