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12 results on '"Yin, Danlei"'

3. Fabrication of Er:Y₂O₃ transparent ceramics for 2.7 μm mid-infrared solid-state lasers

Author

Yin, Danlei, Wang, Jun, Wang, Ying, Liu, Peng, Ma, Jie, Xu, Xiaodong, Shen, Deyuan, Dong, Zhili, Kong, Ling Bing, Tang, Dingyuan, School of Electrical and Electronic Engineering, and School of Materials Science and Engineering

Subjects
Materials [Engineering], Mid-Infrared, Electrical and electronic engineering [Engineering], Solid-State Lasers
Abstract

Laser grade 7 at.% Er:Y2O3 transparent ceramics with submicron grain size were fabricated by using one-step vacuum sintering followed by hot isostatic pressing (HIPing) technique. Through studying the sintering trajectory of Er:Y2O3 ceramics, the sintering temperature zone where sufficient relative density (>96%), no pore-boundary separation, and sub-micron grain size (

Published
2020

6. Fabrication and microstructural characterizations of lasing grade Nd:Y2O3 ceramics.

Author

Yin, Danlei, Wang, Jun, Liu, Peng, Zhu, Haiyong, Yao, Bingqing, Dong, Zhili, and Tang, Dingyuan

Subjects
*TRANSPARENT ceramics, *ISOSTATIC pressing, *CERAMICS, *THULIUM, *HOT pressing, *SOLID-state lasers, *MICROSTRUCTURE
Abstract

Transparent 0.6 at% Nd:Y2O3 ceramics were fabricated by vacuum sintering at 1550°C and hot isostatic pressing (HIP) at 1540°C. The ceramics sintered at such temperatures had good homogeneity with dense microstructures, without any residual pores and secondary phases. The in‐line transmittance reached 81.6% at 1000 nm and remained 81.1% at 650 nm. Continuous wave (CW) laser operation of an uncoated ceramic slab was evaluated. A maximum output power of 3.6 W with slope efficiency of 45.2% at 1.08 μm was obtained. [ABSTRACT FROM AUTHOR]

Published
2019
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9. Submicron‐grained Yb:Lu2O3 transparent ceramics with lasing quality.

Author

Yin, Danlei, Ma, Jie, Liu, Peng, Yao, Bingqing, Wang, Jun, Dong, Zhili, Kong, Ling Bing, and Tang, Dingyuan

Subjects
*YTTERBIUM, *TRANSPARENT ceramics, *FABRICATION (Manufacturing), *DOPING agents (Chemistry), *LUTETIUM compounds
Abstract

We report on our recent progress of fabricating Yb3+‐doped Lu2O3 transparent ceramics for 1 μm solid‐state laser application. Well‐dispersed 3.3 at.% Yb:Lu2O3 nanopowders were synthesized using a co‐precipitation method. Without using any sintering aids, the Yb:Lu2O3 nanopowders could be densified by vacuum sintering at 1500°C/10 hours followed by HIPing at 1480°C/4 hours. Such obtained Yb:Lu2O3 ceramics had not only dense microstructure and submicron grain size of about 0.6 μm, but also in‐line transmission of 80.0% at 600 nm. Preliminary continuous wave (CW) laser experiments with an uncoated Yb:Lu2O3 ceramic slab have demonstrated highly efficient CW laser oscillation at 1079.8 nm. [ABSTRACT FROM AUTHOR]

Published
2019
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12. Fabrication of Highly Transparent Y 2 O 3 Ceramics with CaO as Sintering Aid.

Author

Yin, Danlei, Wang, Jun, Ni, Meng, Liu, Peng, Dong, Zhili, and Tang, Dingyuan

Subjects
*TRANSPARENT ceramics, *ISOSTATIC pressing, *CERAMICS, *SINTERING, *THERMAL conductivity, *HOT pressing, *LOW temperatures
Abstract

Highly transparent Y2O3 ceramics were successfully fabricated with CaO as sintering aid. The microstructure evolution, optical transmittance, hardness and thermal conductivity of the Y2O3 ceramics were investigated. It was found that doping a small amount (0.01–0.15 wt.%) of CaO could greatly improve the densification rate of Y2O3. With an optimized CaO dosage of 0.02 wt.% combined with the low temperature vacuum sintering plus hot isostatic pressing (HIP-ing), Y2O3 ceramics with in-line transmittance of 84.87% at 1200 nm and 81.4% at 600 nm were obtained. [ABSTRACT FROM AUTHOR]

Published
2021
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