title: Double-clad 10-W Yb3+-doped fiber master oscillator power fiber amplifier for He3+ optical pumping.
abstract: We describe an all-fiber ytterbium-doped laser followed by a double-stage ytterbium-doped double-clad fiber amplifier of 10-W output power for helium pumping. Different cavity designs are investigated with the goal of achieving high-power multimode emission at 1083 nm, wavelength tunability over the helium absorption bands, and linewidth envelope control over the range 1-3 GHz. We point out the domains with unstable output power and discuss their origin.
authors.affiliation: sbordais@keopsys.com
authors.forename: Sylvain
authors.initials: S
authors.lastname: Bordais
authors.forename: Sébastien
authors.initials: S
authors.lastname: Grot
authors.forename: Yves
authors.initials: Y
authors.lastname: Jaouën
authors.forename: Pascal
authors.initials: P
authors.lastname: Besnard
authors.forename: Marc
authors.initials: M
authors.lastname: Le Flohic