Effect of NaF doping on the transparency,microstructure and spectral properties of Yb3+: CaF2 transparent ceramics |
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| Affiliation: | 1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China;2. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621900, China;3. Center of Materials Research and Analysis, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China;1. College of Physics, Sichuan University, Chengdu, 610064, China;2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, 610064, China;3. Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China;4. Key Laboratory of High Energy Density Physics of Ministry of Education, Sichuan University, Chengdu 610064, China;5. Institute for Advanced Study, Chengdu University, Chengdu 610106, China;1. Department of Physics, Gandhigram Rural University, Gandhigram 624302, India;2. Department of Physics, Sri Venkateswara University, Tirupati 517502, India;1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou City, Fujian Province 350002, PR China;2. College of Chemistry and Materials Science, Fujian Normal University, Fuzhou City, Fujian Province 350007, PR China;3. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China (Mindu Innovation Laboratory), Fuzhou, Fujian 350108, PR China;4. College of Chemistry, Fuzhou University, Fuzhou City, Fujian Province 350116, PR China;5. Faculty of Materials Metallurgy and Chemical, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, PR China |
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| Abstract: | Yb3+:CaF2 transparent ceramics are promising laser gain media with outstanding performance. However, low transmittance in the visible range is the main challenge that restricts the application of Yb3+:CaF2 ceramics in the laser system. In this paper, a new scheme to eliminate the residual pores in the Yb3+:CaF2 transparent ceramics based on doping of NaF as a sintering aid is proposed. Microstructural characterization indicated that NaF could inhibit the grain growth and increase the transmittance in the visible range significantly. The corresponding transmittance was measured to be 85% at the wavelength of 400 nm. The spectra results showed that co-doped with Na+ ions could break the clusters of Yb3+ ions and modulate the spectroscopy properties of Yb3+: CaF2 lattice efficiently. This paper proved that doping with NaF is an efficient strategy to improve the transmittance and fluorescence quantum efficiency of Yb3+:CaF2 transparent ceramics. |
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| Keywords: | transparent ceramics sintering aids transmittance spectroscopy modulation |
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