Effects of F- on the optical and spectroscopic properties of Yb3+/Al3+-co-doped silica glass

Wenbin Xu , Chunlei Yu , Shikai Wang , Fengguang Lou , Suya Feng , Meng Wang , Qinling Zhou , Danping Chen , Lili Hu , Malgorzata Guzik , Georges Boulon (1)

1 ILM - Institut Lumière Matière [Villeurbanne]

Yb3+/Al3+-co-doped silica glasses with different F− content were prepared in this work by sol–gel method combined with high temperature sintering. XRF, FTIR and XPS methods were used to confirm the presence of F−. The effects of F− on the optical and spectroscopic properties of these glasses have been investigated. It is worth to notice that the F−/Si4+ mass ratio equal to 9% is a significant value showing a real change in the variation trends of numerous following parameters: refractive index, UV absorption edge, absorption and emission cross sections, scalar crystal-field NJ and fluorescent lifetimes. Furthermore, introduction of F− can adjust the refractive index of Yb3+/Al3+-co-doped silica glass and it is useful for large mode area (LMA) fibers.

Mots clés: Silica glass; Yb3+ spectroscopy; F− and Al3+ influences; Refractive index

Domaines: Chimie; Physique [physics]; Sciences de l'ingénieur [physics]

Wenbin Xu, Chunlei Yu, Shikai Wang, Fengguang Lou, Suya Feng, et al.. Effects of F- on the optical and spectroscopic properties of Yb3+/Al3+-co-doped silica glass. Optical Materials, 2015, 42, pp.245-250. ⟨10.1016/j.optmat.2014.12.039⟩. ⟨hal-02305584⟩