Abstract We demonstrate a high efficiency 1083 nm fibre amplifier tandem pumped by a 1030 nm fibre laser. The 1030 nm fibre laser is coupled into a 25 m long single clad ytterbium doped fibre via a high power wave division multiplexer to core pump the 1083 nm signal laser. An output power of 4.5 W and a power conversion efficiency of 76.6% are achieved without power-roll. The performance of the amplifier can be improved by optimizing the gain fibre length.
(Efficiency, stability, gain, and other operational parameters)
Cite this article:
Xiao Hu(肖虎), Wu Wu-Ming(吴武明), Xu Jiang-Ming(许将明), Zhou Pu(周朴), and Xu Xiao-Jun(许晓军) High power tandem pumping fibre amplifier 2011 Chin. Phys. B 20 114208
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