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Conference papers

Guiding 1-m scale discharge created by a Tesla generator triggered with femtosecond laser filament in air

Abstract : oral presentation We report experiments on laser guided discharges obtained in air by the high voltage delivered by a compact Tesla coil. The home-made Tesla generator provides bursts of voltage oscillations at 100 kHz with peak amplitude of about 350 kV. The voltage is applied between two spherical electrodes. The discharge is triggered by a laser pulse at 800 nm of 350 mJ energy and 700 fs duration. Before reaching the electrodes, the pulse undergoes filamentation, producing thereby a 2 m long continuous plasma column with a diameter of 5 mm and a nearly constant electron density of n ~ 1016 electrons/cm3. No electric discharge is produced by the Tesla generator in the absence of the laser when the interelectrode distance is larger than 32 cm because the electric field is less than the critical value for spontaneous breakdown. Guided discharges activated by filament plasma column are obtained up to an interelectrode distance of 150 cm. The triggering of the guided discharge depends sensitively on the laser arrival time with respect to the phase and amplitude of theTesla voltage cycles. Data on the discharge current, delay between the laser arrival and the initiation of the discharge will be presented. Images of the discharging path guided by the filament will be shown as well.
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https://hal.archives-ouvertes.fr/hal-02894172
Contributor : Veronique Bouzid <>
Submitted on : Wednesday, July 8, 2020 - 5:57:20 PM
Last modification on : Tuesday, January 26, 2021 - 3:17:28 AM

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  • HAL Id : hal-02894172, version 1

Citation

Léonid Arantchouk, Yohann Brelet, Aurélien Houard, Y-B. André, Bernard S. Prade, et al.. Guiding 1-m scale discharge created by a Tesla generator triggered with femtosecond laser filament in air. 17th International Symposium on High Current Electronics 17th HCE, Sep 2012, Tomsk, Russia. pp.251. ⟨hal-02894172⟩

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