Triggering, guiding and deviation of long air spark discharges with femtosecond laser filament

Benjamin Forestier 1 Aurélien Houard 1 Ivan Revel 2 Magali Durand 1, 3 Yves-Bernard André 1 Bernard Prade 1 Amélie Jarnac 4 Jérôme Carbonnel 4 Marc Le Nevé 5 Jean-Claude de Miscault 5 Bruno Esmiller 6 Denis Chapuis 2 André Mysyrowicz 1
1 LOA - Laboratoire d'optique appliquée
2 EADS Innovation Works [Toulouse]
3 ONERA - The French Aerospace Lab [Châtillon]
4 ILM - Interaction Laser-Matière
LOA - Laboratoire d'optique appliquée
5 CILAS - Compagnie industrielle des lasers [Orléans]
6 ASTRIUM
Abstract : In the perspective of the laser lightning rod, the ability of femtosecond filaments to trigger and to guide large scale discharges has been studied for several years. The present paper reports recent experimental results showing for the first time that filaments are able not only to trigger and guide but also to divert an electric discharge from its normal path. Laser filaments are also able to divert the spark without contact between laser and electrodes at large distance from the laser. A comparison between negative and positive discharge polarities also reveals important discrepancies in the guiding mechanism.
Keywords : high-speed optical techniques nonlinear optics plasma light propagation plasma production by laser sparks
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Benjamin Forestier, Aurélien Houard, Ivan Revel, Magali Durand, Yves-Bernard André, et al.. Triggering, guiding and deviation of long air spark discharges with femtosecond laser filament. AIP Advances, American Institute of Physics- AIP Publishing LLC, 2012, 2 (1), pp.012151. ⟨10.1063/1.3690961⟩. ⟨hal-00852030⟩

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