title: Wavelength beam combining of ytterbium fiber lasers.
abstract: Wavelength beam combining of five ytterbium fiber lasers is demonstrated in a master-oscillator power-amplifier configuration at combined powers up to 6 W. The combined beam profile has an M2 value of 1.14, which is equal to that of an individual fiber. Beam steering in one dimension over 140 resolvable spots is also demonstrated.
authors.affiliation: Massachusetts Institute of Technology Lincoln Laboratory, 244 Wood Street, Lexington, Massachusetts 02420, USA. saugst@ll.mit.edu
authors.forename: S J
authors.initials: SJ
authors.lastname: Augst
authors.forename: A K
authors.initials: AK
authors.lastname: Goyal
authors.forename: R L
authors.initials: RL
authors.lastname: Aggarwal
authors.forename: T Y
authors.initials: TY
authors.lastname: Fan
authors.forename: A
authors.initials: A
authors.lastname: Sanchez