Costantini, Daniele M.Limberger, Hans GeorgLasser, TheoMuller, Claude A. P.Zellmer, H.Riedel, R.Tünnermann, A.2009-07-202009-07-202009-07-20200010.1364/OL.25.001445https://infoscience.epfl.ch/handle/20.500.14299/41516WOS:000089438400013Active mode locking of a Pr3+/Yb3+-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 similar to 550-ps duration with a repetition rate of 239 MHz at a wavelength of 635 nm have been generated. (C) 2000 Optical Society of America.[OFD]PHASE MODULATORStext::journal::journal article::research article