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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 22 — Nov. 15, 2007
  • pp: 3352–3354

Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation

M. Engholm, L. Norin, and D. Åberg  »View Author Affiliations

Optics Letters, Vol. 32, Issue 22, pp. 3352-3354 (2007)

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A broad visible luminescence band and characteristic IR luminescence of Yb 3 + 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 5 d 4 f emission from Yb 2 + 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.

© 2007 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.5690) Materials : Rare-earth-doped materials
(020.1335) Atomic and molecular physics : Atom optics

ToC Category:

Original Manuscript: August 16, 2007
Revised Manuscript: September 21, 2007
Manuscript Accepted: September 26, 2007
Published: November 14, 2007

M. Engholm, L. Norin, and D. Åberg, "Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation," Opt. Lett. 32, 3352-3354 (2007)

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