Effect of B2O3 addition on structure and properties of Yb3+/Al3+/B3+-co-doped silica glasses |
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| Authors: | Mengting Guo Chongyun Shao Yang Zhang Jingbo Yu Yan Jiao Malgorzata Guzik Georges Boulon Jinjun Ren Lili Hu |
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| Affiliation: | 1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China;2. Shanghai Institute of Satellite Engineering, Shanghai, China;3. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China;4. Faculty of Chemistry, University of Wrocław, Wrocław, Poland;5. Institute Light Matter, UMR 5306 University of Lyon 1-CNRS, University of Lyon, Villeurbanne, France |
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| Abstract: | The homogeneous Yb3+/Al3+/B3+-co-doped silica glasses were prepared via a sol-gel method. The impact of B2O3 addition on the physical and optical properties and network structure was systematically studied. The network structure was investigated by the Fourier Transform Infrared (FT-IR), Raman spectra, and Solid State Nuclear Magnetic Resonance (SSNMR). Herein, B2O3 addition can continuously decrease the refractive index and density. When B2O3 is lower than 2 mol%, B2O3 addition can obviously decrease the scalar crystal field parameters, Yb3+ asymmetry degree, Yb3+ cross-sections, due to the generation of Yb–O–B bonds at the cost of partial Yb–O–Al/Si ones. When B2O3 is more than 2 mol%, FT-IR, Raman spectra, and SSNMR results indicate that further increased B atoms prefer to connect with Si and Al rather than Yb. Consequently, the above parameters are basically unchanged. Based on the results, an intuitive model of structure and properties evolution during the substitution of SiO2 by B2O3 has been established. |
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| Keywords: | B2O3 addition network structure optical properties physical properties Yb3+-doped silica glass |
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