Electrical conductivity of a femtosecond laser generated plasma channel in air

We have measured the time-dependent electrical resistance of a plasma channel created in air by a self-guiding TW femtosecond laser pulse. The plasma conductivity over a 200 ns time interval has been determined from a nonlinear low-inductance circuit model of the experiment. The circuit model incorp...

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Bibliographic Details
Published in:Optics communications 2001-03, Vol.189 (1), p.107-111
Main Authors: Ladouceur, H.D., Baronavski, A.P., Lohrmann, D., Grounds, P.W., Girardi, P.G.
Format: Article
Language:English
Subjects:
Atmosphere
Conductivity
Electron density
Exact sciences and technology
Femtosecond
Filament
Laser
Laser-plasma interactions
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma
Recombination rates
Ultrafast
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Summary:We have measured the time-dependent electrical resistance of a plasma channel created in air by a self-guiding TW femtosecond laser pulse. The plasma conductivity over a 200 ns time interval has been determined from a nonlinear low-inductance circuit model of the experiment. The circuit model incorporates the decay kinetics of the plasma channel and the initial electron density.
ISSN:0030-4018
1873-0310
DOI:10.1016/S0030-4018(01)01012-4