title: Continuous wave and mode-locked Yb3+:Y2O3 ceramic thin disk laser.
abstract: CW and mode-locked laser operation based on an Yb3+:Y2O3 ceramic thin disk is reported. In CW laser operation, an output power of 70 W with an optical-to-optical efficiency of 57.4% was achieved. A higher slope efficiency of 70% was also obtained with a 50-W pump laser diode with more suitable emission characteristics. In mode-locked laser operation, pulses as short as 547 fs with an average power of 7.4 W were obtained. To our knowledge, this is the first demonstration of a high power CW and mode-locked laser operation based on Yb3+:Y2O3 ceramic thin disks.
authors.affiliation: Institute for Laser Science, University of Electro-Communications, Tokyo, Japan. tokura@ils.uec.ac.jp
authors.forename: Masaki
authors.initials: M
authors.lastname: Tokurakawa
authors.forename: Akira
authors.initials: A
authors.lastname: Shirakawa
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Ueda
authors.forename: Hideki
authors.initials: H
authors.lastname: Yagi
authors.forename: Takagimi
authors.initials: T
authors.lastname: Yanagitani
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Kaminskii
authors.forename: Kolja
authors.initials: K
authors.lastname: Beil
authors.forename: Christian
authors.initials: C
authors.lastname: Kränkel
authors.forename: Günter
authors.initials: G
authors.lastname: Huber