Fabrication and Property of Yb:CaF2 Laser Ceramics from Co-precipitated Nanopowders
Fabrication and Property of Yb:CaF2 Laser Ceramics from Co-precipitated Nanopowders
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DOI：
10.15541/jim20190121
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发表时间：
2019
影响因子：
1.7
通讯作者：
Jiabei Wei;G. Toci;A. Pirri;B. Patrizi;Yagang Feng;M. Vannini;Jiang Li
中科院分区：
文献类型：
--
作者：
Jiabei Wei;G. Toci;A. Pirri;B. Patrizi;Yagang Feng;M. Vannini;Jiang Li
: 采用共沉淀粉体，通过真空烧结和热压后处理，成功制备出透明掺镱氟化钙陶瓷（Yb:CaF 2 ）。通过600 ℃预烧1 h、700 ℃热压后处理2 h制备的5at% Yb:CaF 2 透明陶瓷在1200 nm波长下的在线透过率达到92.0%。对陶瓷的微观结构、光谱特性和激光性能进行了测量和讨论。该样品显示出均匀的微观结构，平均晶粒尺寸为 360 nm。此外，计算出陶瓷在977 nm处的吸收截面和在1030 nm处的发射截面分别为0.39×10 –20 cm 2 和0.26×10 –20 cm 2 。最后，对激光行为进行了测试，发现最大输出功率为 0.9 W，而最高斜率效率为 23.6%。
: Transparent ytterbium doped calcium fluoride ceramics (Yb:CaF 2 ) were successfully fabricated by vacuum sintering and hot pressing post-treatment from coprecipitated powders. In-line transmittance of 5at% Yb:CaF 2 transparent ceramics fabricated by pre-sintering at 600 ℃ for 1 h and hot pressing post-treatment at 700 ℃ for 2 h, reaches 92.0% at the wavelength of 1200 nm. Microstructure, spectroscopic characteristics and laser performance of the ceramics were measured and discussed. The sample shows a homogeneous microstructure with average grain size of 360 nm. Fur-thermore, the absorption cross section at 977 nm and the emission cross section at the 1030 nm of the ceramics are calculated to 0.39×10 –20 cm 2 and 0.26×10 –20 cm 2 , respectively. Finally, the laser behavior was tested, finding a maximum output power of 0.9 W while the highest slope efficiency was 23.6%.