Superfilamentation in Air

Abstract : The interaction between a large number of laser filaments brought together using weak external focusing leads to the emergence of few filamentary structures reminiscent of standard filaments, but carrying a higher intensity. The resulting plasma is measured to be one order of magnitude denser than for short-scale filaments. This new propagation regime is dubbed superfilamentation. Numerical simulations of a nonlinear envelope equation provide good agreement with experiments.
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Guillaume Point, Yohann Brelet, Aurélien Houard, Vytautas Jukna, Carles Milián, et al.. Superfilamentation in Air. Physical Review Letters, American Physical Society, 2014, 112, pp.223902. ⟨10.1103/PhysRevLett.112.223902⟩. ⟨hal-01118211⟩

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