title: Experimental demonstration of passive coherent combining of fiber lasers by phase contrast filtering.
abstract: We report experiments on a new laser architecture involving phase contrast filtering to coherently combine an array of fiber lasers. We demonstrate that the new technique yields a more stable phase-locking than standard methods using only amplitude filtering. A spectral analysis of the output beams shows that the new scheme generates more resonant frequencies common to the coupled lasers. This property can enhance the combining efficiency when the number of lasers to be coupled is large.
authors.affiliation: XLIM UMR 7252, CNRS–Université de Limoges, 123 Avenue Albert Thomas, 87060 Limoges, France.
authors.forename: François
authors.initials: F
authors.lastname: Jeux
authors.forename: Agnès
authors.initials: A
authors.lastname: Desfarges-Berthelemot
authors.forename: Vincent
authors.initials: V
authors.lastname: Kermène
authors.forename: Alain
authors.initials: A
authors.lastname: Barthelemy
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005374:Filtration / Q000295:instrumentation*; D007834:Lasers; D018511:Systems Integration