A 980 nm Yb-doped single-mode fibre laser with 946 nm Nd:YAG laser as pump source

doi:10.1088/1674-1056/19/7/074211

Abstract Based on rate equations, this paper gives expressions of the output power, the pump power threshold, the slope efficiency, the fibre optimal length and the laser gain of a quasi-three-level Yb-doped fibre laser. The gain relationship between quasi-three-level system and four-level system is also given, which provides a theoretical basis for suppressing the four-level transmissions. In the experiment, we adopt the backward pumping configuration and use a linear cavity. The Yb-doped fibre laser has an output power of 372 mW of single-mode laser emission at 980 nm with a slope efficiency of 21.2% when the fibre length is 29.5~cm close to an optimal fibre length in theory. The experimental results accord well with the theoretical analyses.

Keywords: quasi-three-level Yb-doped fibre 980 nm laser

Revised: 22 December 2009
Accepted manuscript online:

PACS:	42.55.Wd	(Fiber lasers)
	42.60.By	(Design of specific laser systems)
	42.81.Dp	(Propagation, scattering, and losses; solitons)
	42.81.Qb	(Fiber waveguides, couplers, and arrays)

Cite this article:

Li Ping-Xue(李平雪), Zou Shu-Zhen(邹淑珍), Zhang Xue-Xia(张雪霞), and Li Gang (李港) A 980 nm Yb-doped single-mode fibre laser with 946 nm Nd:YAG laser as pump source 2010 Chin. Phys. B 19 074211

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A 980 nm Yb-doped single-mode fibre laser with 946 nm Nd:YAG laser as pump source

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