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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 21 — Nov. 1, 2010
  • pp: 3541–3543

Thermoluminescence characterization of traps involved in the photodarkening of ytterbium-doped silica fibers

Franck Mady, Mourad Benabdesselam, and Wilfried Blanc  »View Author Affiliations


Optics Letters, Vol. 35, Issue 21, pp. 3541-3543 (2010)
http://dx.doi.org/10.1364/OL.35.003541


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Abstract

The photodarkening (PD) mechanisms of ytterbium-doped silica optical fibers have still not been elucidated, although hardening routes have been proposed. Most basic questions are still under debate about the assignment of the darkening excitation bands into the UV range, the nature of absorbing centers (photoionized centers or trapped carriers?), or of traps accepting photo-released carriers (electron or hole traps?). We used thermoluminescence measurements to characterize traps populated by different radiation types. It is notably demonstrated that photodarkening involves silica hole traps. The popular idea that color centers are formed upon carrier trapping is not consistent with our observations.

© 2010 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(160.2750) Materials : Glass and other amorphous materials
(160.5690) Materials : Rare-earth-doped materials
(260.5210) Physical optics : Photoionization
(350.5610) Other areas of optics : Radiation
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Physical Optics

History
Original Manuscript: July 21, 2010
Manuscript Accepted: September 8, 2010
Published: October 18, 2010

Citation
Franck Mady, Mourad Benabdesselam, and Wilfried Blanc, "Thermoluminescence characterization of traps involved in the photodarkening of ytterbium-doped silica fibers," Opt. Lett. 35, 3541-3543 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-21-3541


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