Fabrication and Sintering Behavior of Er:SrF₂ Transparent Ceramics using Chemically Derived Powder.
Fabrication and Sintering Behavior of Er:SrF₂ Transparent Ceramics using Chemically Derived Powder.
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化学粉末制备 Er:SrF2 透明陶瓷及其烧结行为
DOI：
10.3390/ma11040475
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发表时间：
2018-03-22
期刊：
影响因子：
--
通讯作者：
Nie X
中科院分区：
文献类型：
--
作者：
Liu J;Liu P;Wang J;Xu X;Li D;Zhang J;Nie X
在本文中，我们报道了高质量的5At的制作。掺Er3+%的SrF2透明陶瓷是一种潜在的中红外激光增益介质的候选材料，采用化学衍生粉末在700℃热压40h。系统地研究了Er：SRF2陶瓷的相结构、致密化和显微组织演变。此外，还阐明了Er：SRF2晶体生长的动力学机制。结果表明，Er：SRF2透明陶瓷的晶体生长机制为晶格扩散，其在2000 nm处的最大在线透过率达到92%，与单晶的理论透过率非常接近。此外，发射光谱显示最强的发射带位于2735 nm。这意味着可以在5at中实现大约2.7atμm的激光输出。%Er3+离子掺杂的SrF2透明陶瓷。
In this paper, we report the fabrication of high-quality 5 at. % Er3+ ions doped SrF2 transparent ceramics, the potential candidate materials for a mid-infrared laser-gain medium by hot-pressing at 700 °C for 40 h using a chemically-derived powder. The phase structure, densification, and microstructure evolution of the Er:SrF2 ceramics were systematically investigated. In addition, the grain growth kinetic mechanism of Er:SrF2 was clarified. The results showed lattice diffusion to be the grain growth mechanism in the Er:SrF2 transparent ceramic of which highest in-line transmittance reached 92% at 2000 nm, i.e., very close to the theoretical transmittance value of SrF2 single crystal. Furthermore, the emission spectra showed that the strongest emission band was located at 2735 nm. This means that it is possible to achieve a laser output of approximately 2.7 μm in the 5 at. % Er3+ ions doped SrF2 transparent ceramics.