title: Design and experimental demonstration of a large pedestal thulium-doped fibre.
abstract: We present a novel large-mode-area thulium-doped fibre with a large pedestal design. We discuss the advantages of this large pedestal fibre in the context of overcoming limitations imposed by cleaving and splicing tolerances. Finally we demonstrate the use of such a fibre in constructing monolithic fibre lasers operating at 1.95 µm with 170 W of output power, 0.1 nm line-width and a diffraction limited beam quality of M(2)(X,Y) = 1.02, 1.03.
authors.forename: Nikita
authors.initials: N
authors.lastname: Simakov
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Hemming
authors.forename: Adrian
authors.initials: A
authors.lastname: Carter
authors.forename: Kevin
authors.initials: K
authors.lastname: Farley
authors.forename: Alan
authors.initials: A
authors.lastname: Davidson
authors.forename: Neil
authors.initials: N
authors.lastname: Carmody
authors.forename: Mark
authors.initials: M
authors.lastname: Hughes
authors.forename: Jae M O
authors.initials: JM
authors.lastname: Daniel
authors.forename: Len
authors.initials: L
authors.lastname: Corena
authors.forename: Dmitrii
authors.initials: D
authors.lastname: Stepanov
authors.forename: John
authors.initials: J
authors.lastname: Haub