title: Gain analysis and design of evanescently coupled N+1 core fiber laser arrays.
abstract: Using coupled mode theory it is shown how transverse mode shaping and selection can be performed, including in-phase operation, by engineering of the refractive index and gain. Analytical predictions are confirmed by a detailed numerical model.
authors.affiliation: Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, NM 87117, USA. erik.bochove@kirtland.af.mil
authors.forename: Erik J
authors.initials: EJ
authors.lastname: Bochove