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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 32 — Nov. 10, 2012
  • pp: 7758–7764

Photodarkening kinetics as a function of Yb concentration and the role of Al codoping

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


Applied Optics, Vol. 51, Issue 32, pp. 7758-7764 (2012)
http://dx.doi.org/10.1364/AO.51.007758


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Abstract

We investigated the photodarkening (PD) kinetics of two fiber series with variation of the Yb content for constant Al concentration or constant ratio of Al/Yb, respectively. The results show the outstanding importance of the absolute value of Al concentration also in the case of fibers with strongly reduced Yb content. An Al/Yb ratio of 5 to 6 is not sufficient to mitigate PD loss. Moreover, a model to describe PD loss and rate constant as functions of Yb concentration and excitation is suggested that links measurements of PD in single fibers of the same type (variation of Yb inversion) and in fiber series (constant Yb inversion).

© 2012 Optical Society of America

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: August 17, 2012
Manuscript Accepted: October 10, 2012
Published: November 6, 2012

Citation
Sylvia Jetschke, Sonja Unger, Martin Leich, and Johannes Kirchhof, "Photodarkening kinetics as a function of Yb concentration and the role of Al codoping," Appl. Opt. 51, 7758-7764 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-32-7758


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References

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