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Proceedings Paper

Strong excited state absorption (ESA) in Yb-doped fiber lasers
Author(s): Magnus Engholm; Sara Rydberg; Krister Hammarling
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Paper Abstract

Excited state absorption (ESA) measurements performed on Yb-doped silica bers show the onset of a strong absorption band in the visible range. In this work, we perform experiments to investigate the possibility for ESA to be part of the induced optical losses (photodarkening) observed in Yb-doped ber lasers. Our results indicate that an ESA process, from the 2F5/2 excited state manifold in the Yb3+ ion to the charge-transfer state with absorption bands in the UV range, may constitute a transfer route for pump- and laser photons in the near-infrared range.

Paper Details

Date Published: 22 March 2013
PDF: 7 pages
Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86010P (22 March 2013); doi: 10.1117/12.2002957
Show Author Affiliations
Magnus Engholm, Mid Sweden Univ. (Sweden)
Sara Rydberg, Mid Sweden Univ. (Sweden)
Krister Hammarling, Mid Sweden Univ. (Sweden)

Published in SPIE Proceedings Vol. 8601:
Fiber Lasers X: Technology, Systems, and Applications
Sami T. Hendow, Editor(s)

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