All-solid-state Nd:YAG ceramic fourth-harmonic ultraviolet laser at 266 nm

作者：Liu, Wenbin^*; Mi, Zhongliang; Zhao, Xuejun; Li, Jiang; Liu, Binglong; Liu, Jing; Pan, Yubai

来源：Ceramics International, 2015, 41(10): 15250-15254.

DOI：10.1016/j.ceramint.2015.07.203

• Nd:YAG ceramic
• Optical quality
• 226 nm
• Laser output

Transparent Nd:YAG ceramic was fabricated by a solid-state reaction method using a mixture of commercial alpha-Al2O3, Y2O3 and Nd2O3 powders. The sample with an average grain size of 20 mu m has a fully dense microstructure. The transmittances of the ceramic sample are 82.1% and 84.3% at 400 nm and 1064 nm, respectively, which are very close to the theoretical values of Nd:YAG single crystal with good quality. 266 nm ultraviolet-beam generation by fourth-harmonic generation of an all-solid-state Nd:YAG ceramic laser is demonstrated. When the pump power at 808 nm is 20 W, the average output power at 266 nm is 0.32 W. The optical-to-optical conversion efficiency from 808 nm to 266 nm is 1.6%. This is the first report on laser output at 266 nm for Nd:YAG ceramics to date.

• 出版日期2015-12
• 单位中国科学院; 中国科学院上海硅酸盐研究所