title: Water vapor concentration measurement in air using filament-induced fluorescence spectroscopy.
abstract: Water vapor fluorescence in air induced by femtosecond laser filaments was systematically investigated. The fluorescence signal intensity was found to be linearly proportional to the water vapor concentration, which opens up the possibility of absolute humidity measurements, even remotely.
authors.affiliation: Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval, Québec, Québec, Canada.
authors.forename: Tie-Jun
authors.initials: TJ
authors.lastname: Wang
authors.forename: Huailiang
authors.initials: H
authors.lastname: Xu
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Daigle
authors.forename: Aravindan
authors.initials: A
authors.lastname: Sridharan
authors.forename: Shuai
authors.initials: S
authors.lastname: Yuan
authors.forename: See Leang
authors.initials: SL
authors.lastname: Chin