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

Yoo, S., Basu, C., Boyland, A.J., Sones, C.L., Nilsson, J., Sahu, J.K. and Payne, D.N. (2007) Photodarkening in Yb-doped aluminosilicate fibers induced by 488 nm irradiation Optics Letters, 32, (12), pp. 1626-1628. (doi:10.1364/OL.32.001626).

Record type: Article

Abstract

Photodarkening of Yb-doped aluminosilicate fibers by continuous wave 488 nm irradiation was investigated. The irradiation induced significant excess loss in the UV-visible spectroscopy (VIS) region in Yb-doped aluminosilicate fibers while pure aluminosilicate fibers showed negligible induced loss. Ultraviolet-VIS-near infrared spectroscopy revealed an absorption peak at 220 nm in unexposed Yb-doped aluminosilicate fiber preforms. The observed peak was attributed to Yb-associated oxygen deficiency centers (ODCs) and proposed as a precursor of the photodarkening. The proposed model was supported by measurements on oxygen loaded Yb-doped aluminosilicate fibers. In these, the photodarkening could be significantly reduced, which we attribute to a smaller number of ODCs following oxygen loading.

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Published date: June 2007

Identifiers

Local EPrints ID: 49795
URI: http://eprints.soton.ac.uk/id/eprint/49795
ISSN: 0146-9592
PURE UUID: 0e7d1b4f-506b-4342-8d36-459c6fef81df

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Date deposited: 03 Dec 2007
Last modified: 17 Jul 2017 14:55

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Contributors

Author: S. Yoo
Author: C. Basu
Author: A.J. Boyland
Author: C.L. Sones
Author: J. Nilsson
Author: J.K. Sahu
Author: D.N. Payne

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