The effect of Y3+ doping upon Nd: S-FAP transparent ceramics for effective spectral performance improvement
The effect of Y3+ doping upon Nd: S-FAP transparent ceramics for effective spectral performance improvement
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DOI：
10.1016/j.ceramint.2022.09.117
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发表时间：
2022-09
影响因子：
5.2
通讯作者：
Yongqiang Zhang;Zhiwei Zhou;B. Mei;Yu Yang
中科院分区：
文献类型：
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作者：
Yongqiang Zhang;Zhiwei Zhou;B. Mei;Yu Yang
近年来，掺钕透明陶瓷作为激光增益介质发挥了重要作用。具有各向异性结构的陶瓷在发光方面更有优势。采用常规化学共沉淀法合成了Nd， Y共掺杂Sr5(PO4)3F （Nd, Y: S-FAP）纳米颗粒。采用热压烧结法制备了Nd， Y: S-FAP透明陶瓷。此外，采用Judd-Ofelt （J-O）理论进一步评价了光谱性质。合成的纳米颗粒粒径约为25 nm，呈椭球状。该陶瓷的最高透过率为2% Nd: S-FAP，在1000 nm处达到85%。从实测吸收光谱计算得到4i9 /2→4F5/2+ 2h9 /2跃迁的吸收截面为4.58 × 10−20cm2。随着掺杂Y3+离子浓度的增加，1057 nm处的发射峰强度逐渐增大。计算得到的4f3 /2→4i11 /2跃迁的受激发射截面为7.61 × 10−20cm2，与现有矩阵相比有很大提高。因此，这项研究显示了Nd， Y: S-FAP作为固态激光器的巨大前景。
In recent years, neodymium (Nd) doped transparent ceramics have played a great role as laser gain media. The ceramics with anisotropic structures have more advantages in luminescence. The Nd, Y co-doped Sr5(PO4)3F (Nd, Y: S-FAP) nanoparticles were synthesized by a conventional chemical co-precipitation method. The transparent Nd, Y: S-FAP ceramics with high quality were fabricated by the hot-pressed sintering method. Moreover, the Judd-Ofelt (J-O) theory was adopted to further evaluate the spectral properties. The as-synthesized nanoparticles, whose grain size was about 25 nm, were nearly ellipsoidal. The highest transmittance of the ceramic was 2% Nd: S-FAP, reaching 85% at 1000 nm. The calculated absorption cross-section of the4I9/2→4F5/2+2H9/2transition from the measured absorption spectra was 4.58 × 10−20cm2. With the increase of the concentration of doped Y3+ions, the intensity of the emission peak at 1057 nm increased gradually. Moreover, the calculated stimulated emission cross-section of4F3/2→4I11/2transitions was 7.61 × 10−20cm2, which was greatly improved compared to the current matrix. The research, therefore, showed the great promise of Nd, Y: S-FAP as a solid-state laser.