Investigations on CaF2:Nd Microcrystal‐Glass Composites with High Transmittance and Long Fluorescence Lifetime |
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| Authors: | Dongdong Wang Ruilin Zheng Zhongyue Wang Weiyan Yue Zhao Quan Bo Peng Wei Wei |
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| Affiliation: | 1. Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, , Nanjing, 210023 China;2. School of Optoelectronic Engineering, Nanjing University of Posts & Telecommunications, , Nanjing, 210023 China;3. Engineering Research Center (NUPT) for Preparation and Application of Advanced Fiber Materials, , Nanjing, 210023 China |
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| Abstract: | A kind of novel CaF2:Nd microcrystal‐glass composites with high transmittance and long fluorescence lifetime were prepared by a two‐step melt‐quenching technique. Based on Mie theory, a theoretical estimate of the scattering losses was suggested for the microcrystal‐glass composites. By matching dispersion curve of the glass matrix and CaF2 microcrystal in the range of UV–Vis‐NIR, the transmittance can reach 83%. The effects of CaF2:Nd microcrystals/glass ratio on structure and optical properties were investigated. The composite sample‐doped 30 wt% CaF2:Nd nano/microcrystals exhibits long fluorescence lifetime of 518 μs at 1051 nm. |
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