title: Revival of femtosecond laser plasma filaments in air by a nanosecond laser.
abstract: Short lived plasma channels generated through filamentation of femtosecond laser pulses in air can be revived after several milliseconds by a delayed nanosecond pulse. Electrons initially ionized from oxygen molecules and subsequently captured by neutral oxygen molecules provide the long-lived reservoir of low affinity allowing this process. A Bessel-like nanosecond-duration laser beam can easily detach these weakly bound electrons and multiply them in an avalanche process. We have experimentally demonstrated such revivals over a channel length of 50 cm by focusing the nanosecond laser with an axicon.
authors: Teramobile Project, Laboratoire d'Optique Appliquée, Ecole Nationale Supérieure des Techniques Avancées-Ecole Polytechnique, CNRS UMR 7639, F-91761 Palaiseau Cedex, France.
authors: Bing
authors: B
authors: Zhou
authors: Selcuk
authors: S
authors: Akturk
authors: Bernard
authors: B
authors: Prade
authors: Yves-Bernard
authors: YB
authors: André
authors: Aurélien
authors: A
authors: Houard
authors: Yi
authors: Y
authors: Liu
authors: Michel
authors: M
authors: Franco
authors: Ciro
authors: C
authors: D'Amico
authors: Estelle
authors: E
authors: Salmon
authors: Zuo-Qiang
authors: ZQ
authors: Hao
authors: Noelle
authors: N
authors: Lascoux
authors: André
authors: A
authors: Mysyrowicz
mesh_terms: D000388:Air; D004583:Electrons; D004867:Equipment Design; D007834:Lasers; D055095:Optics and Photonics; D010100:Oxygen / Q000737:chemistry; D013997:Time Factors
chemical_list: D010100:Oxygen