Journal of Inorganic Materials ›› 2019, Vol. 34 ›› Issue (12): 1341-1348.DOI: 10.15541/jim20190121

Special Issue: 优秀作者论文集锦 2019~2020年度优秀作者作品欣赏:功能材料

• RESEARCH LETTERS • Previous Articles     Next Articles

Fabrication and Property of Yb:CaF2 Laser Ceramics from Co-precipitated Nanopowders

WEI Jia-Bei1,2,TOCI Guido3,PIRRI Angela4,PATRIZI Barbara5,FENG Ya-Gang1,2,VANNINI Matteo3,LI Jiang1,2()   

  1. 1. Key Laboratory of Transparent Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
    2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    3. Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, CNR-INO, Via Madonna del Piano 10C, 50019 Sesto Fiorentino (Fi), Italy
    4. Istituto di Fisica Applicata “Carrara”, Consiglio Nazionale delle Ricerche, CNR-IFAC, Via Madonna del Piano 10C, 50019 Sesto Fiorentino (Fi), Italy;
    5. Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, CNR-INO, Via G. Moruzzi, 1, 56124 Pisa (Pi), Italy
  • Received:2019-03-25 Revised:2019-04-25 Published:2019-12-20 Online:2019-07-23
  • Supported by:
    Foundation item: National Natural Science Foundation of China(61575212);Key Research Project of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-JSC022)

Abstract:

Transparent ytterbium doped calcium fluoride ceramics (Yb:CaF2) were successfully fabricated by vacuum sintering and hot pressing post-treatment from coprecipitated powders. In-line transmittance of 5at% Yb:CaF2 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. Furthermore, 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 2and 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%.

Key words: Yb:CaF2, co-precipitation synthesis, two-step sintering, laser ceramics, optical property

CLC Number: