Femtosecond laser-guided electric discharge in air

Abstract : The filament due to the self-guided propagation of an infrared femtosecond laser pulse in atmospheric-pressure air is used to trigger and guide an electric discharge. The long low density plasma channel due to the filament is first heated by the Joule effect during an initial transient plasma stage. The heated channel of recombined gas then hydrodynamically expands radially. The onset of a discharge starts when the density depression on axis reaches the threshold discharge value. This model is supported by detailed experimental and numerical analysis.
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Submitted on : Sunday, March 14, 2010 - 7:51:29 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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Stellios Tzortzakis, Bernard Prade, Michel Franco, André Mysyrowicz, Stefan Hüller, et al.. Femtosecond laser-guided electric discharge in air. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2001, 64 (5), pp.057401. ⟨10.1103/PhysRevE.64.057401⟩. ⟨hal-00463710⟩

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