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.

5 pages, 4 figures

Cited by in corpus (2)

• Generation of long-lived underdense channels using femtosecond filamentation in air
• Laser beam self-symmetrization in air in the multifilamentation regime