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Remote triggering of air-gap discharge by a femtosecond laser filament and postfilament at distances up to 80 m

Abstract : We experimentally observed laser-induced remote high-voltage discharge triggering between two needle electrodes with half-a-cm spacing. The discharge was initiated by a 744-nm, 90-fs, 6-mJ laser pulse undergoing filamentation in air. For the direct voltage below the self-breakdown threshold, triggering of air-gap discharge was synchronized with a 10-Hz laser repetition rate and occurred between 40 and 80 m of the propagation path. No discharge guiding was observed. The experimentally registered and simulated remote triggering probability was above 80% in the range of 45–60 m from laser output and about 50% in the range of 60–80 m. The probability decreases as the postfilament hot spot diverges with a simultaneous increase in stochastic laser beam wandering.
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https://hal-ensta-paris.archives-ouvertes.fr//hal-03312461
Contributor : Aurélien Houard <>
Submitted on : Monday, August 2, 2021 - 2:35:52 PM
Last modification on : Monday, September 13, 2021 - 10:46:02 PM

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O. Kosareva, D. Mokrousova, N. Panov, I. Nikolaeva, D. Shipilo, et al.. Remote triggering of air-gap discharge by a femtosecond laser filament and postfilament at distances up to 80 m. Applied Physics Letters, American Institute of Physics, 2021, 119 (4), pp.041103. ⟨10.1063/5.0057544⟩. ⟨hal-03312461⟩

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