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Femtosecond laser-guided electric discharge in air

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7 Author(s)
Tzortzakis, S. ; Lab. d'Opt. Appliquee, Ecole Polytech., Palaiseau, France ; Prade, B. ; Andre, Y.-B. ; Franco, M.
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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.

Published in:

Quantum Electronics Conference, 2000. Conference Digest. 2000 International

Date of Conference:

10-15 Sept. 2000

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