Photo darkening in ytterbium co-doped silica material

Kent Erik Mattsson; Stig Nissen Knudsen; Benoit Cadier; Thierry Robin

doi:10.1117/12.763117

25 February 2008 Photo darkening in ytterbium co-doped silica material

Kent Erik Mattsson, Stig Nissen Knudsen, Benoit Cadier, Thierry Robin

Proceedings Volume 6873, Fiber Lasers V: Technology, Systems, and Applications; 68731C (2008) https://doi.org/10.1117/12.763117
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

A model description of photo darkening based on 30 characterised fibres in an un-seeded amplifier setup is presented. Photo darkening of ytterbium / aluminium and/or phosphorous co-doped silica fibres is found to saturate following prolonged exposure to pump radiation. The photo darkening is associated with non-binding oxygen at surfaces of ytterbium / aluminium clusters. The dominant colour centre at near infrared wavelengths in MCVD material is a combination of 1.9 eV (FWHM of 0.62 eV) and 2.4 eV (FWHM of 0.85 eV) absorption dependent on average phonon energy of the glass material.

Citation Download Citation

Kent Erik Mattsson, Stig Nissen Knudsen, Benoit Cadier, and Thierry Robin "Photo darkening in ytterbium co-doped silica material", Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 68731C (25 February 2008); https://doi.org/10.1117/12.763117

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