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

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Abstract

We present some strong evidence against the assignment of an ytterbium-related oxygen deficiency center (ODC) near 230nm in Yb-doped aluminosilicate glass in the Letter by Yoo et al. [Opt. Lett. 32, 1626 (2007)] . The strong 230nm 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

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Reply to comment on “Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation”

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne
Opt. Lett. 33(11) 1217-1218 (2008)

Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation

S. Yoo, C. Basu, A. J. Boyland, C. Sones, J. Nilsson, J. K. Sahu, and D. Payne
Opt. Lett. 32(12) 1626-1628 (2007)

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