title: Polarization evolution of ultrashort pulses in air.
abstract: Measurements of polarization of filamenting light pulses at 800 nm are presented. Electronic nonlinearity, molecular alignment and nonlinear losses all contribute to modify the polarization of a femtosecond filamenting pulse. The polarization is modified in each stage of preparation, filamentation and divergence after the filament.
authors.forename: Shermineh
authors.initials: S
authors.lastname: Rostami
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Diels
authors.forename: Ladan
authors.initials: L
authors.lastname: Arissian