title: 1.1 kW average output power from a thin-disk multipass amplifier for ultrashort laser pulses.
abstract: We report on a thin-disk multipass amplifier for ultrashort laser pulses delivering an average output power of 1105 W. The amplifier was seeded by a Trumpf TruMicro5050 laser with a power of 80 W at a wavelength of 1030 nm, pulse duration of 6.5 ps, and repetition rate of 800 kHz. The energy of the amplified pulses is 1.38 mJ with a duration of 7.3 ps. The amplifier exhibits an optical efficiency of 44% and a slope efficiency of 46%. The beam quality was measured to be better than M²=1.25.
authors.forename: Jan-Philipp
authors.initials: JP
authors.lastname: Negel
authors.forename: Andreas
authors.initials: A
authors.lastname: Voss
authors.forename: Marwan
authors.initials: M
authors.lastname: Abdou Ahmed
authors.forename: Dominik
authors.initials: D
authors.lastname: Bauer
authors.forename: Dirk
authors.initials: D
authors.lastname: Sutter
authors.forename: Alexander
authors.initials: A
authors.lastname: Killi
authors.forename: Thomas
authors.initials: T
authors.lastname: Graf