title: Generation of high energy square-wave pulses in all anomalous dispersion Er:Yb passive mode locked fiber ring laser.
abstract: We have experimentally demonstrated square pulses emission from a co-doped Er:Yb double-clad fiber laser operating in anomalous dispersion DSR regime using the nonlinear polarization evolution technique. Stable mode-locked pulses have a repetition rate of 373 kHz with 2.27 µJ energy per pulse under a pumping power of 30 W in cavity. With the increase of pump power, both the duration and the energy of the output square pulses broaden. The experimental results demonstrate that the passively mode-locked fiber laser operating in the anomalous regime can also realize a high-energy pulse, which is different from the conventional low-energy soliton pulse.
authors.forename: Georges
authors.initials: G
authors.lastname: Semaan
authors.forename: Fatma
authors.initials: F
authors.lastname: Ben Braham
authors.forename: Mohamed
authors.initials: M
authors.lastname: Salhi
authors.forename: Yichang
authors.initials: Y
authors.lastname: Meng
authors.forename: Faouzi
authors.initials: F
authors.lastname: Bahloul
authors.forename: François
authors.initials: F
authors.lastname: Sanchez