Title :
All-Fiber Counter-Propagation Pumped Single Frequency Amplifier Stage With 300-W Output Power
Author :
Theeg, Thomas ; Sayinc, Hakan ; Neumann, Jörg ; Kracht, Dietmar
Author_Institution :
Laser Zentrum Hannover e.V., Hannover, Germany
Abstract :
We present a single frequency ytterbium-doped fiber amplifier, counter-propagation pumped with an all-fiber pump and signal combiner. The fiber combiner is capable of handling 440 W of pump power as well as the maximum achieved output power of 301 W. The threshold of stimulated Brillouin scattering of the high-power fiber amplifier was shifted from 175 to 280 W by external thermal management in combination with the pump-induced intrinsic temperature gradient.
Keywords :
optical fibre amplifiers; optical pumping; stimulated Brillouin scattering; ytterbium; all fiber counter propagation pumped single frequency amplifier; all-fiber pump; external thermal management; fiber combiner; power 300 W; power 301 W; power 440 W; pump induced intrinsic temperature gradient; signal combiner; stimulated Brillouin scattering; Laser excitation; Optical fiber amplifiers; Optical fiber polarization; Power amplifiers; Power generation; Scattering; All-fiber pump light combiner; single-frequency; stimulated Brillouin scattering; ytterbium fiber amplifier;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2217487
