Effects of Ho3+ concentration on the fabrication and properties of Ho: Y2O3-MgO nanocomposite for Mid-infrared laser applications |
| |
| Affiliation: | 1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang, Liaoning, 110819, China;2. Research Center for Advanced Ceramic Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning, 110819, China;3. School of Mechanical Engineering, Shenyang University, Shenyang, 110044, China;4. Foshan Graduate School of Northeastern University, Foshan, 528311, Guangdong, China |
| |
| Abstract: | Infrared transparent Ho: Y2O3-MgO nanocomposite ceramics with a volume ratio of 50:50 (RE2O3: MgO) were prepared by combining sol-gel powder synthesis and hot-pressing sintering techniques. In order to obtain Ho: Y2O3-MgO nanocomposite ceramics with fine grain size, dense microstructure and homogeneous phase domains, the effect of sintering temperature and Ho3+ doping concentration were studied. Transmittance and SEM measurement revealed that the grain size of 3 at.% Ho: Y2O3-MgO ceramic sintered at 1250 °C is 141 nm, and the transmission is up to 85.2% at 5 μm. The detailed spectroscopic investigation of x at.% Ho: Y2O3-MgO (x = 1, 3, 5, 7, 9, 15) ceramics was performed. The nanocomposites exhibited photoluminescence properties similar to that of Ho: Y2O3 crystals and ceramics. In addition, the thermal conductivity of 3 at.% Ho: Y2O3-MgO ceramic is 13.04 W/m·K, which is superior to that of Ho:Y2O3 ceramics. The high transmission, excellent thermal conductivity, and outstanding optical characteristics indicated that Ho: Y2O3-MgO ceramics is a promising material for efficient infrared solid-state laser. |
| |
| Keywords: | Transparent ceramic Mid-infrared laser Hot-pressing sintering Photoluminescence |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
