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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 6 — Mar. 25, 2013
  • pp: 7590–7598

Evidence of Tm impact in low-photodarkening Yb-doped fibers

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


Optics Express, Vol. 21, Issue 6, pp. 7590-7598 (2013)
http://dx.doi.org/10.1364/OE.21.007590


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Abstract

In contrast to Yb/Al-doped fibers, the influence of very low Tm2O3 concentrations (≥ 0.1 mol-ppm) on photodarkening (PD) is clearly detectable in Yb/P-doped fibers that are known to show little degradation effects. For Tm2O3 additions of more than 50 mol-ppm, the measured PD loss is even similar to Yb/Al-doped fibers with comparable rare earth concentrations. Our work reveals the risk of color center generation by pumping at wavelengths of 915 nm or 976 nm even in Al-free Yb-doped fibers and emphasizes the importance of high purity of raw materials for the preparation of Yb laser fibers with expected very low PD.

© 2013 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: January 31, 2013
Revised Manuscript: March 7, 2013
Manuscript Accepted: March 11, 2013
Published: March 19, 2013

Citation
Sylvia Jetschke, Sonja Unger, Anka Schwuchow, Martin Leich, Julia Fiebrandt, Matthias Jäger, and Johannes Kirchhof, "Evidence of Tm impact in low-photodarkening Yb-doped fibers," Opt. Express 21, 7590-7598 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-6-7590


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