title: Properties and stability limits of an optimized mode-locked Yb-doped femtosecond fiber laser.
abstract: Stable mode-locked operation in a simple normal-cavity-dispersion laser oscillator that consists of only Yb-doped fiber and saturable absorber is studied. The Yb-doped fiber design parameters: group velocity dispersion (GVD), nonlinearity coefficient, bandwidth (Yb-BW), length and gain are considered to be the controlling parameters of the laser cavity. The pulse characteristics such as the temporal width, spectrum and pulse energy as a function of these elements are reported here. A pulse spectrum transition from M-like to Pi-like and then to parabolic-like shape is observed with different values of the controlling parameters which are similar to that has been observed before in a solid-state laser. The stability limits in the domain of the Yb-BW and length are studied. The stability dependence on GVD, nonlinearity coefficient and gain of the Yb-doped fiber are elucidated. Moreover, the pulse instability dyn ics beyond stability limits are found to be similar to that reported before for similariton.
authors.affiliation: School of Information Technology and Enginerring, University of Ottawa, Ottawa, Ontario, Canada K1N6N5. abosafe@site.uottawa.ca
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: Abdelalim
authors.forename: Yury
authors.initials: Y
authors.lastname: Logvin
authors.forename: Diaa A
authors.initials: DA
authors.lastname: Khalil
authors.forename: Hanan
authors.initials: H
authors.lastname: Anis
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D015018:Ytterbium