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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 11 — Jun. 1, 2008
  • pp: 1216–1216

Comment on “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation”

M. Engholm and L. Norin  »View Author Affiliations


Optics Letters, Vol. 33, Issue 11, pp. 1216-1216 (2008)
http://dx.doi.org/10.1364/OL.33.001216


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Abstract

We present some strong evidence against the assignment of an ytterbium-related oxygen deficiency center (ODC) near 230 nm in Yb-doped aluminosilicate glass in the Letter by Yoo et al. [Opt. Lett. 32, 1626 (2007)] . The strong 230 nm absorption band is actually a charge-transfer band corresponding to the transfer of an electron from nearby oxygen ligands to the ytterbium ion and not related to ODCs.

© 2008 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.5690) Materials : Rare-earth-doped materials
(260.5210) Physical optics : Photoionization
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 8, 2007
Manuscript Accepted: December 17, 2007
Published: May 27, 2008

Citation
M. Engholm and L. Norin, "Comment on “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation”," Opt. Lett. 33, 1216-1216 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-11-1216


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