title: Mode-locked ytterbium fiber laser tunable in the 980-1070-nm spectral range.
abstract: Spectral tuning of a mode-locked Yb-doped fiber laser over a 90-nm range is reported. Using semiconductor saturable absorber mirrors in a fiber laser cavity incorporating a grating-pair dispersive delay line, we obtain reliable self-starting mode locking over the whole tuning range. The wide tuning range is achieved by optimization of reflection characteristics and bandgap energy of the multiple-quantum-well semiconductor saturable absorber and by proper engineering of the laser cavity.
authors.affiliation: Optoelectronics Research Centre, Tampere University of Technology, P.O. Box 692, FIN-33101, Tampere, Finland. Oleg.Okhotnikov@orc.tut.fi
authors.forename: O G
authors.initials: OG
authors.lastname: Okhotnikov
authors.forename: L
authors.initials: L
authors.lastname: Gomes
authors.forename: N
authors.initials: N
authors.lastname: Xiang
authors.forename: T
authors.initials: T
authors.lastname: Jouhti
authors.forename: A B
authors.initials: AB
authors.lastname: Grudinin