title: Harmonic mode locking counterparts of dark pulse and dark-bright pulse pairs.
abstract: We have investigated experimentally different operational states of an all-normal-dispersion ytterbium-doped fiber (YDF) ring laser with a long cavity. Various operational states were obtained by adjusting a polarization controller (PC) and the pump power. Self-pulsing, bright pulses, dark-bright pulse pairs and their harmonic mode locking (HML) counterparts, as well as dark pulses and their HML counterparts have all been obtained. Numerical simulations reproduce well the formation processes of dark pulses and dark-bright pulse pairs.
authors.affiliation: College of Physics Science and Information Engineering, Hebei Advanced Thin Films Laboratory, Hebei Normal University, Shijiazhuang 050024, China.
authors.forename: Xingliang
authors.initials: X
authors.lastname: Li
authors.forename: Shumin
authors.initials: S
authors.lastname: Zhang
authors.forename: Yichang
authors.initials: Y
authors.lastname: Meng
authors.forename: Yanping
authors.initials: Y
authors.lastname: Hao
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation