Yanqiu JING, Qiang LIU, Sha SU, Xiaoying LI, Ziyu LIU, Jingya WANG, Jiang LI. Fabrication of Highly Transparent Co:MgAl2O4 Ceramic Saturable Absorber for Passive Q-switching in 1.5 μm [J]. Journal of Inorganic Materials, 2021, 36(8): 877

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- Journal of Inorganic Materials
- Vol. 36, Issue 8, 877 (2021)

1. FESEM image of Co:MgAl2O4 powders

2. FESEM images of Co:MgAl2O4 ceramics vacuum-sintered at different temperatures for 5 h
(a) 1500 ℃; (b) 1550 ℃; (c) 1600 ℃; (d) 1650 ℃; (e) 1700 ℃

3. Relative density and average grain size of 0.05at% Co:MgAl2O4 ceramics pre-sintered at different temperatures for 5 h

4. FESEM microstructures of Co:MgAl2O4 ceramics vacuum-sintered at different temperatures for 5 h and then HIP post-treated at 1800 ℃ for 3 h
(a) 1500 ℃; (b) 1550 ℃; (c) 1600 ℃; (d) 1650 ℃; (e) 1700 ℃

5. Average grain sizes of 0.05at% Co:MgAl2O4 ceramics pre-sintered at different temperatures for 5 h and then HIP post-treated

6. Photo (a) and in-line transmission spectra (b) of the Co:MgAl2O4 ceramics pre-sintered at 1500-1700 ℃ for 5 h and HIP post-treated at 1800 ℃ for 3 h
Colorful figure are available on website

7. Absorption coefficient spectrum of 0.05at% Co:MgAl2O4 ceramic pre-sintered at 1650 ℃ for 5 h and HIP post-treated at 1800 ℃ for 3 h

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