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Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
2007 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 32, no 22, 3352-3354 p.Article in journal (Refereed) Published
Abstract [en]

A broad visible luminescence band and characteristic IR luminescence of Yb3+ ions are observed under UV excitation in ytterbium-doped aluminosilicate glass. Samples made under both oxidizing and reducing conditions are analyzed. A strong charge-transfer absorption band in the UV range is observed for glass samples containing ytterbium. Additional absorption bands are observed for the sample made under reducing conditions, which are associated with f�d transitions of divalent ytterbium. The visible luminescence band is attributed to 5d�4f emission from Yb2+ ions, and the IR luminescence is concluded to originate from a relaxed charge-transfer transition. The findings are important to explain induced optical losses (photodarkening) in high-power fiber lasers.

Place, publisher, year, edition, pages
2007. Vol. 32, no 22, 3352-3354 p.
Keyword [en]
Ytterbium, Silica, Charge transfer, valence stability
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-4380DOI: 10.1364/OL.32.003352ISI: 000251747600044Scopus ID: 2-s2.0-38549100491Local ID: 4261OAI: oai:DiVA.org:miun-4380DiVA: diva2:29412
Available from: 2008-12-09 Created: 2008-12-09 Last updated: 2016-09-26Bibliographically approved
In thesis
1. Materials optimization for optical fiber amplifiers and fiber lasers
Open this publication in new window or tab >>Materials optimization for optical fiber amplifiers and fiber lasers
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Sundvall: Mid Sweden University, 2008. 46 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 50
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-7566 (URN)978-91-85317-93-6 (ISBN)
Public defence
(English)
Supervisors
Available from: 2008-12-10 Created: 2008-12-10 Last updated: 2008-12-10Bibliographically approved

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CiteExportLink to record
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