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

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• 作者：Wenbin Liu^a ; ^{wbliu1981@163.com" class="auth_mail" title="E-mail the corresponding author} ; Zhongliang Mi^a ; Xuejun Zhao^a ; Jiang Li^b ; Binglong Liu^b ; Jing Liu^b ; Yubai Pan^b
• 关键词：Nd ; YAG ceramic ; Optical quality ; 226  ; nm ; Laser output
• 刊名：Ceramics International
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：41
• 期：10
• 页码：15250-15254
• 全文大小：1051 K

文摘

Transparent Nd:YAG ceramic was fabricated by a solid-state reaction method using a mixture of commercial α-Al₂O₃, Y₂O₃ and Nd₂O₃ powders. The sample with an average grain size of 20 μm 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.