title: Sub-2 fs pulses generated by self-channeling in the deep ultraviolet.
abstract: The generation of sub-2 fs light pulses in the UV is numerically demonstrated, using frequency conversion in filamentation regime. Few-cycle pulses emitted at 266 nm keep their temporal shape over several tens of centimeters. Self-compression results from the interplay between Kerr self-focusing and a low-density plasma, which continuously defocuses the pulse over extended propagation ranges.
authors.affiliation: Department of Theoretical Physics and Application, CEA/DAM Ile de France, Bruyeres-le-Chatel, Arpajon cedex, France. luc.berge@cea.fr
authors.forename: L
authors.initials: L
authors.lastname: Bergé
authors.forename: S
authors.initials: S
authors.lastname: Skupin
mesh_terms: D001128:Argon / Q000737:chemistry; D004867:Equipment Design; D005583:Fourier Analysis; D007700:Kinetics; D007834:Lasers; D008029:Lighting / Q000295:instrumentation* / Q000379:methods; D015233:Models, Statistical; D008962:Models, Theoretical; D055095:Optics and Photonics; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012984:Software; D013056:Spectrophotometry, Ultraviolet / Q000295:instrumentation* / Q000379:methods; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D001128:Argon