Modeling the triggering of streamers in air by ultrashort laser pulses

Vidal, François; Comtois, D.; Chien, C. Y.; Desparois, A.; Fontaine, Bruno La; Johnston, T. W.; Kieffer, Jean‐Claude; Mercure, H.P.; Pépin, H.; Rizk, F.A.M.

doi:10.1109/27.848101

Cited by 104 publications

(82 citation statements)

References 32 publications

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“…As the heavy species have a long vibrational relaxation time, the gas temperature stays high for a very long time and leads to an expansion of the gas. This in turn allows the free electrons to travel unperturbed on a longer distance, increasing the discharge efficiency [28,42].…”

Section: Resultsmentioning

confidence: 99%

Optimal laser-pulse energy partitioning for air ionization

et al. 2016

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We investigate the pulse partitioning of a 6.3-mJ, 450-fs pulse at 1030 nm to produce plasma channels. At such moderate energies, splitting the energy into several subpulses reduces the ionization efficiency and thus does not extend the plasma lifetime. We numerically show that when sufficient energy to produce multifilamentation is available, splitting the pulse temporally in a pulse train increases the gas temperature compared to a filament bundle of the same energy. This could improve the mean free path of the free electrons, therefore enhancing the efficiency of discharge triggering.

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Section: Resultsmentioning

confidence: 99%

Optimal laser-pulse energy partitioning for air ionization

et al. 2016

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“…We note that there is a delay of 5 or 10 s between the laser arrival time and the initiation of the discharge. A delay between laser pulse arrival and initiation of the discharge has been previously reported and discussed in terms of hydrodynamic expansion of the air heated by the initial plasma column [16][17] . We are planning a more detailed study of this retardation effect.…”

Section: Tesla Coil Discharges Guided By Femtosecond Laser Filaments mentioning

confidence: 99%

Tesla coil discharges guided by femtosecond laser filaments in air

Brelet

Houard

Arantchouk

et al. 2012

Applied Physics Letters

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“…The resulting low density column offers a privileged path for discharge. [25][26][27] In parallel, electrons loosely bound on neutral oxygen molecules can be easily released by current heating, leading to a decrease of the critical temperature for leader development. 28 This explains why fully guided discharges can develop even if the laser pulse is applied well before the voltage pulse, as seen in Figure 3.…”

Section: A Guiding Mechanismsmentioning

confidence: 99%

Triggering, guiding and deviation of long air spark discharges with femtosecond laser filament

Forestier

Houard

Revel³

et al. 2012

AIP Advances

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In the perspective of the laser lightning rod, the ability of femtosecond filaments to trigger and to guide large scale discharges has been studied for several years. The present paper reports recent experimental results showing for the first time that filaments are able not only to trigger and guide but also to divert an electric discharge from its normal path. Laser filaments are also able to divert the spark without contact between laser and electrodes at large distance from the laser. A comparison between negative and positive discharge polarities also reveals important discrepancies in the guiding mechanism

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Modeling the triggering of streamers in air by ultrashort laser pulses

Cited by 104 publications

References 32 publications

Optimal laser-pulse energy partitioning for air ionization

Optimal laser-pulse energy partitioning for air ionization

Tesla coil discharges guided by femtosecond laser filaments in air

Triggering, guiding and deviation of long air spark discharges with femtosecond laser filament

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