Actively mode-locked visible upconversion fiber laser.
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.
Costantini
D M
DM
Limberger
H G
HG
Lasser
T
T
Muller
C A
CA
Zellmer
H
H
Riedel
P
P
Tünnermann
A
A