Femtosecond laser-guided electric discharge in air
Tzortzakis, S.; Prade, B.; Andre, Y.-B.; Franco, M.; Mysyrowicz, A.; Huller, S.; Mora, P.
Quantum Electronics Conference, 2000. Conference Digest. 2000 International
Volume , Issue , 10-15 Sept. 2000 Page(s): 1 pp. -
Digital Object Identifier   10.1109/IQEC.2000.908185
Summary: Summary form only given. We have studied a new type of electric discharge triggered in air by intense femtosecond IR laser pulses. When propagating in atmosphere, such pulses self-organize in the form of filaments, leaving in their wake a thin plasma column with uniform density along the axis. This plasma column can act as a trigger for electric discharges. The discharge occurs under reduced applied voltage and follows the path of the self-guided laser pulse. Its onset is reproducible, but occurs with a measurable delay. This is to be contrasted with the typical discharge initiated by a non-uniform laser-produced plasma, for which the onset of the discharge fluctuates considerably from shot to shot.

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