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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 14473–14478

Influence of Tm- or Er-codoping on the photodarkening kinetics in Yb fibers

Sylvia Jetschke, Martin Leich, Sonja Unger, Anka Schwuchow, and Johannes Kirchhof  »View Author Affiliations


Optics Express, Vol. 19, Issue 15, pp. 14473-14478 (2011)
http://dx.doi.org/10.1364/OE.19.014473


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Abstract

We investigated photodarkening (PD) parameters of Yb/Al-doped silica fibers as a function of the concentration of additional rare earth ions like Tm or Er. It was found that both Tm and Er cause a decrease in Yb inversion followed by a reduction of PD in the case of Er, whereas Tm-codoping with more than 10 mol-ppm can strongly accelerate the process and also increase the PD loss. However, contrary to [1], we conclude that the typical PD behavior of Yb/Al fibers is an intrinsic feature of this fiber type and not caused by trace impurities of Tm (< 1 mol-ppm) unintentionally incorporated by the raw materials during fiber preparation.

© 2011 OSA

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(160.2290) Materials : Fiber materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 23, 2011
Revised Manuscript: July 5, 2011
Manuscript Accepted: July 5, 2011
Published: July 13, 2011

Citation
Sylvia Jetschke, Martin Leich, Sonja Unger, Anka Schwuchow, and Johannes Kirchhof, "Influence of Tm- or Er-codoping on the photodarkening kinetics in Yb fibers," Opt. Express 19, 14473-14478 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-15-14473


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References

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