title: Terahertz radiation source in air based on bifilamentation of femtosecond laser pulses.
abstract: A new terahertz (THz) source in air based on the bifilamentation of femtosecond laser pulses is reported. This THz radiation is 1 order of magnitude more intense than the transition-Cherenkov THz emission from femtosecond laser filaments reported recently and shows different angular and polarization properties. We attribute it to the emission from a bimodal transmission line created by two plasma filaments.
authors.affiliation: Laboratoire d'Optique Appliquée, ENSTA, Ecole Polytechnique, Teramobile project, CNRS UMR 7639, Palaiseau, 91761, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: A
authors.initials: A
authors.lastname: Houard
authors.forename: B
authors.initials: B
authors.lastname: Prade
authors.forename: S
authors.initials: S
authors.lastname: Akturk
authors.forename: A
authors.initials: A
authors.lastname: Mysyrowicz
authors.forename: V T
authors.initials: VT
authors.lastname: Tikhonchuk