Cumulative effects in 100 kHz repetition-rate laser-induced plasma filaments in air

Wang, T.-J. et al. (2023) Cumulative effects in 100 kHz repetition-rate laser-induced plasma filaments in air. Advanced Photonics Research, 4(3), 2200338. (doi: 10.1002/adpr.202200338)

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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.

Item Type:Articles
Additional Information:TJW acknowledges the support from NSAF (Grant no. U2130123), Strategic Priority Research Program of the Chinese Academy of Sciences (Grant no. XDB16), International Partnership Program of Chinese Academy of Sciences (Grant nos. 181231KYSB20200033 and 181231KYSB20200040), Shanghai Science and Technology Program (Grant no. 21511105000), and Oversea Training Program of Ministry of Science and Technology. MC acknowledges the support from UK Research and Innovation (UKRI) and the UK Engineering and Physical Sciences Research Council (EPSRC) (Fellowship “In-Tempo” EP/S001573/1), and the Royal Society (RGS\R1\201365). JCD acknowledges the support of NASA (SBIR grant 80NSSC22PB067).
Glasgow Author(s) Enlighten ID:Ebrahim, Mehdi and Adamou, Dionysis and Faccio, Professor Daniele and Afxenti, Ivi and Clerici, Professor Matteo and Dada, Dr Adetunmise
Authors: Wang, T.-J., Ebrahim, M., Afxenti, I., Adamou, D., Dada, A., Li, R., Leng, Y., Diels, J.-C., Faccio, D., Couairon, A., Milián, C., and Clerici, M.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Advanced Photonics Research
ISSN (Online):2699-9293
Published Online:31 January 2023
Copyright Holders:Copyright © 2023 The Authors
First Published:First published in Advanced Photonics Research 4(3): 2200338
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
302459Infrared time-domain quantum opticsMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/S001573/1ENG - Electronics & Nanoscale Engineering
309734Few-cycle pulses for air plasma physicsMatteo ClericiThe Royal Society (ROYSOC)RGS\R1\201365ENG - Electronics & Nanoscale Engineering