title: Femtosecond diode-pumped solid-state laser with a repetition rate of 4.8 GHz.
abstract: We report on a diode-pumped Yb:KGW (ytterbium-doped potassium gadolinium tungstate) laser with a repetition rate of 4.8 GHz and a pulse duration of 396 fs. Stable fundamental modelocking is achieved with a semiconductor saturable absorber mirror (SESAM). The average output power of this compact diode-pumped solid state laser is 1.9 W which corresponds to a peak power of 0.9 kW and the optical-to-optical efficiency is 36%. To the best of our knowledge, this is the femtosecond DPSSL with the highest repetition rate ever reported so far.
authors.affiliation: Department of Physics, Institute of Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland.
authors.forename: Selina
authors.initials: S
authors.lastname: Pekarek
authors.forename: Alexander
authors.initials: A
authors.lastname: Klenner
authors.forename: Thomas
authors.initials: T
authors.lastname: Südmeyer
authors.forename: Christian
authors.initials: C
authors.lastname: Fiebig
authors.forename: Katrin
authors.initials: K
authors.lastname: Paschke
authors.forename: Götz
authors.initials: G
authors.lastname: Erbert
authors.forename: Ursula
authors.initials: U
authors.lastname: Keller