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High power 1.9 μm Tm3+-silica fibre laser pumped at 1.09 μm by a Yb3+-silica fibre laser

✍ Scribed by Yuen H. Tsang; Daniel J. Coleman; Terence A. King

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 300 KB
Volume: 231
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2003.11.072

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✦ Synopsis

Wavelength conversion of the Yb 3þ -silica fibre laser operating near 1.09 lm has been demonstrated by acting as a direct pump source for a small scale Tm 3þ -silica fibre laser to provide an output at 1.9 lm. The characterisation of the Tm 3þ -silica fibre laser is described; it operated with a threshold of 30 ± 20 mW, a slope efficiency of 27.2 ± 0.4% with respect to the launched pump power and a maximum output power of 1.1 W. There is evidence of saturation in the output power due to excited state absorption which suggests that the maximum achievable output power of this corepumped Tm 3þ -doped fibre laser is approximately 2 W for 1.09 lm pumping.

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