title: Combining efficiency degraded by gain in passively phase-locked laser arrays: contribution of the spectral filtering.
abstract: Passive phase-locking of laser arrays is usually less efficient when the operating point is far above the laser threshold. We investigated the contribution due to the spectral filtering effect induced by the coupled cavities. Experiments carried out on a basic dual-arm laser as well as modeling show that some laser combining losses arise from the spectral filtering whose transmission windows have a non-uniform profile. A simple analytical model of the laser confirms this interpretation.
authors.forename: D
authors.initials: D
authors.lastname: Kabeya
authors.forename: V
authors.initials: V
authors.lastname: Kermene
authors.forename: A
authors.initials: A
authors.lastname: Desfarges-Berthelemot
authors.forename: A
authors.initials: A
authors.lastname: Tonello
authors.forename: A
authors.initials: A
authors.lastname: Barthelemy