Average power of 1.1 kW from spectrally combined, fiber-amplified, nanosecond-pulsed sources.
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%.
Schmidt
O
O
Friedrich Schiller University Jena, Institute of Applied Physics, Albert-Einstein-Strasse 15,D-07745 Jena, Germany. oschmidt@iap.uni-jena.de
Wirth
C
C
Tsybin
I
I
Schreiber
T
T
Eberhardt
R
R
Limpert
J
J
Tünnermann
A
A