title: Passively continuous-wave mode-locked Er(3+)-doped ZBLAN fiber laser at 2.8 μm.
abstract: An Er(3+)-doped ZrF(4)-BaF(2)-LaF(3)-AlF(3)-NaF (ZBLAN) fiber laser was passively mode-locked by inserting a Fe(2+):ZnSe crystal into the free space part of the cavity. Continuous-wave mode-locked pulses at 2.8 μm with a pulse duration of 19 ps estimated from the spectral bandwidth and an average power of 51 mW were generated when a collimated beam traversed the Fe(2+):ZnSe crystal, while Q-switched mode-locked pulses were obtained when the Fe(2+):ZnSe crystal was illuminated by the focused beam.
authors.affiliation: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA.
authors.forename: Chen
authors.initials: C
authors.lastname: Wei
authors.forename: Xiushan
authors.initials: X
authors.lastname: Zhu
authors.forename: R A
authors.initials: RA
authors.lastname: Norwood
authors.forename: N
authors.initials: N
authors.lastname: Peyghambarian