Spectroscopic properties of Pr3+ and Er3+ ions in lead-free borate glasses modified by BaF2 |
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| Affiliation: | 1. University of Silesia, Institute of Chemistry, Szkolna 9, 40-007 Katowice, Poland;2. Bialystok University of Technology, Faculty of Electrical Engineering, Wiejska 45D, 15-351 Bialystok, Poland;1. Dept. de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Laser Processing Group, Instituto de Óptica, CSIC, 28006 Madrid, Spain;3. Física i Cristalografia de Materials i Nanomaterials (FiCMA-FiCNA), Universitat Rovira i Virgili, Tarragona, Spain;1. Department of Energy Systems Research, Ajou University, Suwon 443-749, Republic of Korea;2. Department of Physics, Ajou University, Suwon 443-749, Republic of Korea;1. New Technologies – Research Centre, University of West Bohemia, Univerzitni 8, 306 14 Pilsen, Czech Republic;2. Center of Excellence Geopolymer and Green Technology, School of Material Engineering, University Malaysia Perlis, 01007 Kangar, Perlis, Malaysia;1. School of Information Science and Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Jinan 250100, China;2. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800, China;3. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China |
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| Abstract: | Lead-free oxyfluoride borate glasses singly doped with Pr3+ and Er3+ were prepared and next investigated using absorption and luminescence spectroscopy. In the studied glass system, barium oxide was substituted by BaF2. Two luminescence bands of Pr3+ located at visible spectral region are observed, which correspond to 3P0–3H4 (blue) and 1D2–3H4 (reddish orange) transitions, respectively. The luminescence bands due to 1D2–3H4 transition of Pr3+ are shifted to shorter wavelengths, when BaO was substituted by BaF2. Near-infrared luminescence spectra of Er3+ ions in lead-free borate glasses modified by BaF2 correspond to 4I13/2–4I15/2 transition. Their spectral linewidths increase with increasing BaF2 concentration. The changes in measured lifetimes of rare earth ions are well correlated with the bonding parameters calculated from the optical absorption spectra. |
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| Keywords: | Glasses Rare earth ions Absorption Luminescence Spectroscopic properties |
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