作者
Tássia S Gonçalves, Raphaell J Moreira Silva, Marcos de Oliveira Junior, Cynthia R Ferrari, Gäel Y Poirier, Hellmut Eckert, Andrea SS de Camargo
发表日期
2015/5/1
期刊
Materials Chemistry and Physics
卷号
157
页码范围
45-55
出版商
Elsevier
简介
Rare earth (RE3+)-doped fluorophosphate glasses are among the most promising candidates for high-efficiency laser generation in the near-infrared spectral region. By proper choice of composition, these materials can combine the advantages of fluorides (low phonon energies, low refractive indices, extensive optical window, low hygroscopicity) and of oxides (high chemical and mechanical stability and high dopant solubility), resulting in enhancement of the RE3+ emissive properties. In this work, we present the synthesis and structural/spectroscopic investigation of new glasses with composition 25BaF225SrF2(30-x)Al(PO3)3xAlF3(20-z)YF3:zREF3, where x = 20 or 15, RE = Er3+ and/or Yb3+, z = 0.25–5.0 mol%. Results indicate considerable improvement of the emissive properties of both ions when compared to phosphate or even other fluorophosphate host compositions. Long excited state lifetimes (τ = 10 ms …
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TS Gonçalves, RJM Silva, M de Oliveira Junior… - Materials Chemistry and Physics, 2015