1. Triggering filamentation using turbulence
- Author
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Debbie Eeltink, Maura Brunetti, Jérôme Kasparian, Nicolas Berti, Julien Gateau, Nadège Marchiando, Jean-Pierre Wolf, and Sylvain Hermelin
- Subjects
FOS: Physical sciences ,Pattern Formation and Solitons (nlin.PS) ,ddc:500.2 ,macromolecular substances ,01 natural sciences ,Instability ,Quantitative Biology::Cell Behavior ,law.invention ,Physics::Fluid Dynamics ,Quantitative Biology::Subcellular Processes ,010309 optics ,Protein filament ,Optics ,Filamentation ,law ,0103 physical sciences ,010306 general physics ,Modulation instability ,Physics ,business.industry ,Turbulence ,Water ,Mechanics ,Laser ,Nonlinear Sciences - Pattern Formation and Solitons ,Transverse plane ,Modulation ,business ,Beam (structure) ,Optics (physics.optics) ,Physics - Optics - 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., 5 pages, 6 figures
- Published
- 2016
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