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Triggering filamentation using turbulence

Published in Physical Review. A. 2016, vol. 94, no. 3, p. 033806
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.
Keywords FilamentationTurbulenceWaterModulation instability
arXiv: 1608.06526
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Research groups ISE Pôle Sciences
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EELTINK, Debbie et al. Triggering filamentation using turbulence. In: Physical Review. A, 2016, vol. 94, n° 3, p. 033806. https://archive-ouverte.unige.ch/unige:87516

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Deposited on : 2016-09-20

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