title: 1009 nm continuous-wave ytterbium-doped fiber amplifier emitting 146 W.
abstract: In this Letter, we demonstrate a single-mode continuous-wave fiber laser amplifier emitting 146 W of average output power at a wavelength of 1009 nm. The wavelength and bandwidth of the seed oscillator are defined by a pair of fiber Bragg gratings. The seed is amplified in a two-stage ytterbium-doped rod-type amplifier to 146 W with a high slope efficiency of 64%, showing excellent beam quality and stability throughout the experiment. The ASE suppression is as high as 63 dB.
authors: F
authors: F
authors: Beier
authors: H-J
authors: HJ
authors: Otto
authors: C
authors: C
authors: Jauregui
authors: O
authors: O
authors: de Vries
authors: T
authors: T
authors: Schreiber
authors: J
authors: J
authors: Limpert
authors: R
authors: R
authors: Eberhardt
authors: A
authors: A
authors: Tünnermann