Spatial mode cleaning by femtosecond filamentation in air

Bernard Prade (1) , Michel A. Franco (1) , André Mysyrowicz (1) , Arnaud Couairon (2) , H. Buersing (3) , B. Eberle (3) , M. Krenz (3) , D. Seiffer (3) , Olivier Vasseur (4)

1 LOA - Laboratoire d'optique appliquée
2 CPHT - Centre de Physique Théorique [Palaiseau]
3 FOM - Research Institute for Optronics and Pattern Recognition
4 ONERA - The French Aerospace Lab [Palaiseau]

By studying the conical emission of a blue femtosecond laser filament in air, it is shown that self-improvement of the beams' spatial mode quality occurs for a self-guided laser pulse.

Keywords: Nonlinear Optics; filamentation

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Bernard Prade, Michel A. Franco, André Mysyrowicz, Arnaud Couairon, H. Buersing, et al.. Spatial mode cleaning by femtosecond filamentation in air. Optics Letters, 2006, 31 (17), pp.2601-2603. ⟨10.1364/OL.31.002601⟩. ⟨hal-00463606⟩