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Efficient Generation of Watt-Level Output From Short-Length Nd-Doped Phosphate Fiber Lasers

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7 Author(s)
Zhang, Guang ; Key Lab. of Mater. Sci. & Technol. for High Power Lasers, Chinese Acad. of Sci., Shanghai, China ; Meng Wang ; Yu, Chunlei ; Qinling Zhou
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We report experimental results on high-power heavily Nd-doped phosphate continuous-wave (CW) fiber lasers of very short length. The optimum fiber laser with a length of 26 cm exhibited a maximum output power of as much as 2.87 W and a slope efficiency of 44.7% with respect to absorbed pump power at 795 nm. Up to 1-W laser was also obtained from a 6-cm-short active fiber. The fiber lasers were demonstrated at 1053 nm with a linewidth of 1.6 nm, and showed no evidence of roll-over even at highest output power. The output powers were stable and limited only by available pump power.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 6 )