title: Second-harmonic generation of light at 544 and 272 nm from an ytterbium-doped distributed-feedback fiber laser.
abstract: We report external cavity second-harmonic generation of light at 544 and 272 nm based on an ytterbium-doped distributed-feedback fiber laser. The nonlinear crystal used to generate light at 544 nm is LiNbO3, and the maximum output of the cavity is 845 mW, corresponding to a conversion efficiency of 55%. In a second frequency-doubling step, using a beta-BaBa2O4 crystal, we generate up to 115 mW of light at 272 nm with a conversion efficiency of 14%.
authors.affiliation: QUANTOP--Danish National Research Foundation Center for Quantum Optics, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark. herskind@phys.au.dk
authors.forename: Peter
authors.initials: P
authors.lastname: Herskind
authors.forename: Jens
authors.initials: J
authors.lastname: Lindballe
authors.forename: Christoph
authors.initials: C
authors.lastname: Clausen
authors.forename: Jens Lykke
authors.initials: JL
authors.lastname: Sørensen
authors.forename: Michael
authors.initials: M
authors.lastname: Drewsen