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arXiv · 1608.06526

Triggering filamentation using turbulence

D. Eeltink·N. Berti·N. Marchiando·S. Hermelin·J. Gateau·M. Brunetti·J. P. Wolf·J. Kasparian
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Abstract

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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D. Eeltink, N. Berti, N. Marchiando, S. Hermelin, J. Gateau, M. Brunetti, J. P. Wolf, J. Kasparian. 2016-08-23. Triggering filamentation using turbulence. https://doi.org/10.1103/physreva.94.033806

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