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

Volume

24

Issue

20

fYear

2012

Firstpage

1864

Lastpage

1867

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2217487

Filename

6296691