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He B.,CAS Shanghai Institute of Optics and fine Mechanics | He B.,Shanghai Key Laboratory of All Solid State Laser and Applied | Zhou J.,CAS Shanghai Institute of Optics and fine Mechanics | Zhou J.,Shanghai Key Laboratory of All Solid State Laser and Applied | And 14 more authors.
Microwave and Optical Technology Letters | Year: 2010

We have demonstrated a homemade high-efficient ytterbium-doped fiber laser with up to 1.75 kW of continuous-wave output power at 1.09 lm with a slope efficiency of 76%. The fiber is pumped by two laser diode array (LDA) sources launched through opposite ends. No undesirable effect is observed with increasing pump power, which suggests that the homemade fiber laser could produce higher power output by using more pump sources. © 2010 Wiley Periodicals, Inc. Source

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