title: Actively mode-locked visible upconversion fiber laser.
abstract: Active mode locking of a Pr(3+)/Yb (3+) -doped upconversion fluoride fiber laser with an all-fiber ZnO acousto-optic phase modulator is demonstrated for the first time to the authors' knowledge. Optical pulses of ~550-ps duration with a repetition rate of 239 MHz at a wavelength of 635 nm have been generated.
authors: D M
authors: DM
authors: Costantini
authors: H G
authors: HG
authors: Limberger
authors: T
authors: T
authors: Lasser
authors: C A
authors: CA
authors: Muller
authors: H
authors: H
authors: Zellmer
authors: P
authors: P
authors: Riedel
authors: A
authors: A
authors: Tünnermann