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Air hydrodynamics of the ultrafast laser-triggered spark gap
E. W. Rosenthal, I. Larkin, A. Goffin +4
We present space and time resolved measurements of the air hydrodynamics induced by ultrafast laser pulse excitation of the air gap between two electrodes at high potential differe…
HV discharges triggered by dual- and triple-frequency laser filaments
Thomas Produit, Pierre Walch, Guillaume Schimmel +10
We study the use of frequency upconversion schemes of near-IR picosecond laser pulses and compare their ability to guide and trigger electric discharges through filamentation in ai…
Linearity of charge measurement in laser filaments
Denis Mongin, Elise Schubert, Lorena de la Cruz +3
We evaluate the linearity of three electric measurement techniques of the initial electron density in laser filaments by comparing their results for a pair of filaments and for the…
Optimal laser pulse energy partitioning for air ionization
Elise Schubert, Jean-Gabriel Brisset, Mary Matthews +3
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 sub-pulses reduc…