High efficient Nd:YAG laser ceramics fabricated by dry pressing and tape casting

High efficient Nd:YAG laser ceramics fabricated by dry pressing and tape casting
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干压流延法制备高效 Nd:YAG 激光陶瓷

DOI:
10.1016/j.jallcom.2014.08.083
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发表时间:
2014-12
影响因子:
6.2
通讯作者:
Cao, Yongge
Cao, Yongge
中科院分区:
材料科学2区
文献类型:
--
作者:
Ma, Chaoyang;Dai, Zhen;Guo, Wang;Cao, Yongge

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我们通过干压法和流延法分别成功制备了单体和复合结构的Nd:YAG陶瓷。实验结果表明,可以获得全致密的显微组织,晶粒尺寸约为10μm。两种陶瓷的透光率都超过80%。经过高温退火处理后,基于电子顺磁共振,Nd离子价态从+2价态变为+3价态。通过使用 808 nm 二极管激光器作为泵浦源,我们获得了斜率效率高达 70% 的连续波激光输出,而 Nd:YAG 单体陶瓷的斜率效率为 44%。
We successfully fabricated Nd:YAG ceramics with single body and composite structure respectively by dry pressing and tape casting. The experimental results showed that the full dense microstructure could be obtained with grain size of about 10 μm. The optical transmittance exceeds 80% for both ceramics. After high temperature annealing treatment, the Nd ions valance state changes from +2 to +3 based on the electron paramagnetic resonance. By using a 808 nm diode laser as the pumping source, we obtained C.W. laser output with the slope efficiency up to 70%, compared with that of 44% as we did for Nd:YAG single body ceramics.
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