Cumulative Effects in 100 kHz Repetition‐Rate Laser‐Induced Plasma Filaments in Air - Archive ouverte HAL
Article Dans Une Revue Advanced Photonics Research Année : 2023

Cumulative Effects in 100 kHz Repetition‐Rate Laser‐Induced Plasma Filaments in Air

Tie-Jun Wang
  • Fonction : Auteur
Mehdi H Ebrahim
  • Fonction : Auteur
Ivi Afxenti
  • Fonction : Auteur
Dionysis Adamou
  • Fonction : Auteur
Adetunmise C Dada
  • Fonction : Auteur
Yuxin Leng
  • Fonction : Auteur
Arnaud Couairon
Matteo Clerici

Résumé

Cumulative effects are crucial for applications of laser filaments, such as for the remote transfer of energy and the control of electric discharges. Up to now, studies of cumulative effects in the air of high‐repetition‐rate pulse trains have been performed at lower rates than 10 kHz. Herein, the nonlinear effects associated with short plasma filaments produced by pulses of moderate energy (0.4 mJ per pulse) and repetition rates up to 100 kHz are experimentally characterized. With increasing repetition rate, a decrease in absorption, fluorescence emission, and breakdown voltage and concurrently an increase in peak intensity and third‐harmonic‐generation efficiency are observed. Hydrodynamic simulations of the heated gas show that the observed decreases are directly related to a quasi‐stationary state of reduced gas density in the filament. However, further investigations are required to fully understand the physics underpinning the observed sharp reduction of the breakdown voltage at 100 kHz repetition rates. The results may prove relevant for energy and information delivery applications by laser‐induced air waveguide or electric discharge and lightning control.
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Dates et versions

hal-04309346 , version 1 (27-11-2023)

Identifiants

Citer

Tie-Jun Wang, Mehdi H Ebrahim, Ivi Afxenti, Dionysis Adamou, Adetunmise C Dada, et al.. Cumulative Effects in 100 kHz Repetition‐Rate Laser‐Induced Plasma Filaments in Air. Advanced Photonics Research, 2023, 4 (3), ⟨10.1002/adpr.202200338⟩. ⟨hal-04309346⟩
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