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

References in corpus (4)

• Direct measurement of the electron density of extended femtosecond laser pulse-induced filaments
• Self-seeded lasing in ionized air pumped by 800 nm femtosecond laser pulses
• Lasing of ambient air with microjoule pulse energy pumped by a multi terawatt IR femtosecond laser
• Self-induced white-light seeding laser in a femtosecond laser filament

Cited by in corpus (9)

• Generation of long-lived underdense channels using femtosecond filamentation in air
• Stability conditions for one-dimensional optical solitons in cubic-quintic-septimal media
• Energy deposition from focused terawatt laser pulses in air undergoing multifilamentation
• Underwater acoustic wave generation by filamentation of terawatt ultrashort laser pulses
• Picosecond laser filamentation in air
• Laser beam self-symmetrization in air in the multifilamentation regime
• Periodic and localized waves in parabolic-law media with third- and fourth-order dispersions
• Loss of Polarization in Collapsing Beams
• Delayed ionization and excitation dynamics in a filament wake channel in dense gas medium