title: Passively mode-locked Yb:KLu(WO4)2 oscillators.
abstract: We demonstrate passive mode locking based on the novel monoclinic double tungstate crystal Yb:KLu(WO4)2. We report the shortest pulses ever produced with an Yb-doped tungstate laser using a semiconductor saturable absorber. A pulse duration of 81 fs has been achieved for an average power of 70 mW at 1046 nm. We compare the performance of the polarization oriented parallel to the Nm- and Np-crystallo-optic axes. Results in the femtosecond and picosecond regime are presented applying either Ti:sapphire or diode laser pumping. The great potential of Yb:KLu(WO4)2 as an active medium for ultrashort pulses is demonstrated for the first time, to our knowledge.
authors.forename: U
authors.initials: U
authors.lastname: Griebner
authors.forename: S
authors.initials: S
authors.lastname: Rivier
authors.forename: V
authors.initials: V
authors.lastname: Petrov
authors.forename: M
authors.initials: M
authors.lastname: Zorn
authors.forename: G
authors.initials: G
authors.lastname: Erbert
authors.forename: M
authors.initials: M
authors.lastname: Weyers
authors.forename: X
authors.initials: X
authors.lastname: Mateos
authors.forename: M
authors.initials: M
authors.lastname: Aguiló
authors.forename: J
authors.initials: J
authors.lastname: Massons
authors.forename: F
authors.initials: F
authors.lastname: Díaz