title: Pulse-shaping mechanisms in passively mode-locked thulium-doped fiber lasers.
abstract: Different pulse-shaping mechanisms were investigated experimentally and numerically in passively mode-locked thulium-doped fiber lasers. Conventional solitons were demonstrated in a passively semiconductor saturable absorber mirror mode-locked anomalous dispersion thulium-doped fiber laser. With normal dispersion fiber and spectral filter added in cavity, pulse-shaping processes were theoretically analyzed in the presence of dispersion map and dissipation in thulium-doped fiber lasers. The existence of parabolic pulse as nonlinear attraction was proved and distinct pulse intensity profiles evolution from Gaussian shape to parabolic shape was proposed in dissipative dispersion-managed thulium-doped fiber lasers.
authors.forename: Huihui
authors.initials: H
authors.lastname: Li
authors.forename: Jiang
authors.initials: J
authors.lastname: Liu
authors.forename: Zhaochen
authors.initials: Z
authors.lastname: Cheng
authors.forename: Jia
authors.initials: J
authors.lastname: Xu
authors.forename: Fangzhou
authors.initials: F
authors.lastname: Tan
authors.forename: Pu
authors.initials: P
authors.lastname: Wang