Suppression of photo‐darkening effect by Ca additive in Yb‐doped silica glass fibre | Zendy

Sugiyama S. | Zendy; Fujimoto Y. | Zendy; Murakami M. | Zendy; Nakano H. | Zendy; Sato T. | Zendy; Shiraga H. | Zendy

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Suppression of photo‐darkening effect by Ca additive in Yb‐doped silica glass fibre

Author(s) -

Sugiyama S.,

Fujimoto Y.,

Murakami M.,

Nakano H.,

Sato T.,

Shiraga H.

Publication year - 2013

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2012.4267

Subject(s) - doping , silica glass , materials science , glass fiber , optical fiber , composite material , optics , optoelectronics , physics

It is found that Ca additive effectively suppresses the photo‐darkening effect in Yb‐doped silica fibre even at 6.0 wt% of high Yb 2 O 3 concentration. Ca ion works as a stabiliser to maintain the Yb 3+ valence state. It is hypothesised that this phenomenon may reflect the local charge balance effect in silica glass. This Yb‐Ca co‐doped silica fibre can be useful for high‐power fibre lasers.

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