title: Average power of 1.1 kW from spectrally combined, fiber-amplified, nanosecond-pulsed sources.
abstract: We report on spectral combination of four high repetition rate 5 ns pulsed Yb-doped fiber amplifiers at 1 microm wavelength. The output beam is spatially and temporally superposed by use of an all-reflective diffraction grating. 1.1 kW average power and 220 microJ pulse energy were extracted with a combining efficiency of 99%.
authors.affiliation: Friedrich Schiller University Jena, Institute of Applied Physics, Albert-Einstein-Strasse 15,D-07745 Jena, Germany. oschmidt@iap.uni-jena.de
authors.forename: O
authors.initials: O
authors.lastname: Schmidt
authors.forename: C
authors.initials: C
authors.lastname: Wirth
authors.forename: I
authors.initials: I
authors.lastname: Tsybin
authors.forename: T
authors.initials: T
authors.lastname: Schreiber
authors.forename: R
authors.initials: R
authors.lastname: Eberhardt
authors.forename: J
authors.initials: J
authors.lastname: Limpert
authors.forename: A
authors.initials: A
authors.lastname: Tünnermann