LiF及AlF3对掺Tm3+氟磷玻璃光学、光谱性质、析晶性能及结构的影响

为了平衡掺铥氟磷玻璃对辐射寿命、发射截面和析晶稳定性的综合要求,研究了LiF及AlF₃对掺铥氟磷玻璃光学光谱性质和析晶性能的影响. 研究表明,高达30 mol%的LiF仍可保证氟磷玻璃具有较好的析晶稳定性能且其在提高Tm³⁺离子的辐射寿命上具有非常重要的作用;高AlF₃玻璃具有很好的析晶稳定性能,但Tm³⁺离子在其中的辐射寿命下降较快; 鉴于LiF和AlF₃含量的相对变化对发射截面的影响不大,因此关键词：氟磷玻璃辐射寿命发射截面析晶稳定性

Influence of LiF and AlF3 on optical, spectroscopic,crystallization and structrural properties of Tm3+ doped fluorophosphate glass

To balance the requirements for lifetime, cross section and crystallization stability in rare-earth-doped fluorophosphate(FP) glass, we studied the influence of LiF and AlF₃ on the properties of FP. Results indicate that LiF plays an important role in improving the radiative lifetime of Tm³⁺, and the glass performs good crystallization stability with LiF proportion as high as 30mol%. Crystallization stability in high AlF₃ glass is excellent but the radiative lifetime of Tm³⁺decreases fast. Emission cross section changes mildly with the variation of LiF and AlF₃ proportions, so lifetime, cross section and crystallization stability can achieve their batter values through the ajustment of LiF and AlF₃ proportions.Comparations between J-O parameters and several properties of the Tm³⁺ doped FP glass show that with AlF₃ increasing, the overlap integral of 4f and 5d orbitals of the rare earth ions increases. Raman spectra testify the great variation of glass structure when LiF and AlF₃ contents change largely.