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

Abstract 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.

[1]  Danping Chen,et al.  Influence of Al3+ and P5+ ion contents on the valence state of Yb3+ ions and the dispersion effect of Al3+ and P5+ ions on Yb3+ ions in silica glass , 2014 .

[2]  J. Mackenzie,et al.  Sol-gel processing of silica. II: The role of the catalyst , 1986 .

[3]  M. J. Edwards,et al.  Symmetric Inertial Confinement Fusion Implosions at Ultra-High Laser Energies , 2009, Science.

[4]  Liang Dong,et al.  Extremely large mode area optical fibers formed by thermal stress. , 2009, Optics express.

[5]  I P Kaminow,et al.  Binary silica optical fibers: refractive index and profile dispersion measurements. , 1976, Applied optics.

[6]  Jianhui Yang,et al.  Effect of radiative trapping on measurement of the spectroscopic properties of Yb3+:phosphate glasses , 2003 .

[7]  Shuichi Shibata,et al.  Fabrication of fluorine-doped silica glasses by the sol-gel method , 1988 .

[8]  S. Unger,et al.  Efficient Yb laser fibers with low photodarkening by optimization of the core composition. , 2008, Optics express.

[9]  A. Kurkov.  Oscillation spectral range of Yb-doped fiber lasers , 2007 .

[10]  J. Fleming,et al.  Refractive index dispersion and related properties in fluorine doped silica. , 1983, Applied optics.

[11]  Stephan Grimm,et al.  Highly efficient Yb-doped silica fibers prepared by powder sinter technology. , 2011, Optics letters.

[12]  S. Nolte,et al.  High-power air-clad large-mode-area photonic crystal fiber laser , 2003, Conference on Lasers and Electro-Optics, 2003. CLEO '03..

[13]  Fuxi Gan,et al.  Yb:phosphate laser glass with high emission cross-section , 2000 .

[14]  Lili Hu,et al.  Fabrication and laser behaviors of Yb3+ doped silica large mode area photonic crystal fiber prepared by sol–gel method , 2013 .

[15]  Zhong-hong Jiang,et al.  Effect of F− ions on emission cross-section and fluorescence lifetime of Yb3+-doped tellurite glasses , 2005 .

[16]  F. Auzel.  On the maximum splitting of the (2F7/2) ground state in Yb3+-doped solid state laser materials , 2001 .

[17]  Lili Hu,et al.  Compositional dependence of room-temperature Stark splitting of Yb³⁺ in several popular glass systems. , 2014, Optics letters.

[18]  Kazuya Saito,et al.  Effects of fluorine on structure, structural relaxation, and absorption edge in silica glass , 2002 .