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Wang D.,Nanjing University of Posts and Telecommunications | Zheng R.,Nanjing University of Posts and Telecommunications | Zheng R.,Engineering Research Center for Preparation and Application of Advanced Fiber Materials | Wang Z.,Nanjing University of Posts and Telecommunications | And 5 more authors.
Journal of the American Ceramic Society | Year: 2014

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. © 2014 The American Ceramic Society. Source

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