title: Remote THz generation from two-color filamentation: long distance dependence.
abstract: Remote terahertz (THz) generation from two-color filamentation is investigated as a function of the onset position of filaments. THz signals emitted by filaments produced at distances up to 55 m from the laser source were measured. However, from 9 m to 55 m, the THz signal decayed monotonically for increasing onset positions. With a simple calculation, the dominant factors associated to this decay were identified as group velocity mismatch of the two-color pulses and linear diffraction induced by focusing and propagating the second harmonic pulse.
authors.affiliation: AEREX Avionique inc., Breakeyville, Québec, G0S 1E1, Canada. jean-francois.daigle.AEREX@drdc-rddc.gc.ca
authors.forename: J-F
authors.initials: JF
authors.lastname: Daigle
authors.forename: F
authors.initials: F
authors.lastname: Théberge
authors.forename: M
authors.initials: M
authors.lastname: Henriksson
authors.forename: T-J
authors.initials: TJ
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Yuan
authors.forename: M
authors.initials: M
authors.lastname: Châteauneuf
authors.forename: J
authors.initials: J
authors.lastname: Dubois
authors.forename: M
authors.initials: M
authors.lastname: Piché
authors.forename: S L
authors.initials: SL
authors.lastname: Chin
mesh_terms: D003116:Color; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D055053:Terahertz Radiation