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Optimal laser-pulse energy partitioning for air ionization

Matthews, Mary
Courjaud, Antoine
Published in Physical Review. A. 2016, vol. 94, no. 3
Abstract 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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SCHUBERT, Elise et al. Optimal laser-pulse energy partitioning for air ionization. In: Physical Review. A, 2016, vol. 94, n° 3. https://archive-ouverte.unige.ch/unige:87894

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Deposited on : 2016-10-03

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