Scientific article
OA Policy
English

Shockwave-assisted laser filament conductivity

Published inApplied Physics Letters, vol. 111, no. 21, 211103
Publication date2017
Abstract

We investigate the influence of ultrashort laser filaments on high-voltage discharges and spark-free unloading at various repetition rates and wind conditions. For electric fields well below, close to and above the threshold for discharges, we respectively observe remote spark-free unloading, discharge suppression, and discharge guiding. These effects rely on an indirect consequence of the thermal deposition, namely the fast dilution of the ions by the shockwave triggered by the filament at each laser shot. This dilution drastically limits recombination and increases the plasma channel conductivity that can still be non-negligible after tens or hundreds of milliseconds. As a result, the charge flow per pulse is higher at low repetition rates.

Keywords
  • Laser
  • Femtoseconde
  • Haute tension
  • Décharge
  • Guidage
  • Onde de choc
  • Femtosecond
  • High voltage
  • Discharge
  • Guiding
  • Shockwave
Funding
  • European Commission - Laser Lightning Rod [737033]
  • European Commission - Laser Filamentation for Probing and Controlling Atmospheric Processes [291201]
Citation (ISO format)
SCHUBERT, Elise et al. Shockwave-assisted laser filament conductivity. In: Applied Physics Letters, 2017, vol. 111, n° 21, p. 211103. doi: 10.1063/1.5006854
Main files (1)
Article (Accepted version)
accessLevelPublic
Identifiers
Journal ISSN0003-6951
616views
312downloads

Technical informations

Creation23/11/2017 10:28:00
First validation23/11/2017 10:28:00
Update time15/03/2023 02:28:33
Status update15/03/2023 02:28:32
Last indexation31/10/2024 08:49:12
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack