Phase sensitive parametric amplification of optical vortex beams
Institut FEMTO-ST, Département d'Optique P.M. Duffieux, Unité Mixte de Recherche 6174 du CNRS, Université de Franche-Comté, 25030 Besançon Cedex, France
Corresponding author: a email@example.com
Revised: 28 November 2006
Published online: 24 January 2007
Optical vortex beams with different topological charges are amplified in a travelling wave phase sensitive parametric interaction. Amplified beams observed either in the near field or in the far field domains exhibit patterns that depend on the relative phase between the pump and the vortex beams. Experimental results are compatible with the conservation of orbital angular momentum of the input beam whatever phase matching conditions.
PACS: 42.65.Yj – Optical parametric oscillators and amplifiers / 41.85.Ct – Beam shaping, beam splitting
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007