Improved photodarkening resistivity in ytterbium-doped fiber lasers by cerium codoping

M. Engholm; P. Jelger; F. Laurell; L. Norin

doi:10.1364/OL.34.001285

Improved photodarkening resistivity in ytterbium-doped fiber lasers by cerium codoping

M. Engholm, P. Jelger, F. Laurell, and L. Norin

Optics Letters
Vol. 34,
Issue 8,
pp. 1285-1287
(2009)
•https://doi.org/10.1364/OL.34.001285

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M. Engholm, P. Jelger, F. Laurell, and L. Norin, "Improved photodarkening resistivity in ytterbium-doped fiber lasers by cerium codoping," Opt. Lett. 34, 1285-1287 (2009)

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Related Topics
Table of Contents Category
- Lasers and Laser Optics
Optics & Photonics Topics
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The topics in this list come from the OSA Optics and Photonics Topics applied to this article.
Previously assigned OCIS codes
- Lasers, fiber (060.3510)
- Laser damage (140.3330)

About this Article
History
- Original Manuscript: January 30, 2009
- Revised Manuscript: March 16, 2009
- Manuscript Accepted: March 17, 2009
- Published: April 14, 2009

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Abstract

We show that the photodarkening resistivity of ytterbium-doped fiber lasers can be greatly improved by cerium codoping. It is suggested that the coexistence of the redox couple ${Ce}^{3 +} ∕ {Ce}^{4 +}$ in the glass provides means for trapping both hole- and electron-related color centers that are responsible for the induced optical losses in Yb-doped fiber lasers.

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Fiber	Yb Conc.	Ce Conc.	Al Conc.	$D_{core} ∕ D_{clad}$ $(μ m)$	Geometry	Pump Core NA (coating)
$Yb ∕ Al$	0.22	0.0	2.18	$20 ∕ 150$	Circular	0.32 (Acrylate)
$Yb ∕ Ce ∕ Al$ I	0.22	0.06	2.0	$20 ∕ 150$	Circular	0.32 (Acrylate)
$Yb ∕ Ce ∕ Al$ II	0.55	0.55	6.86	$20 ∕ 135$	Octagonal	0.35 (Silicone)
$Ce ∕ Al$	0.0	0.08	2.41	N/A	N/A	N/A

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