Diode-side-pumped 1123 nm Nd:YAG ceramic laser

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• 作者：Wenbin Liu ; Di Zhang ; Yanping Zeng ; Jiang Li ; Yubai Pan ; Jingkun Guo ; Yong Bo ; Qinjun Peng ; Zuyan Xu
• 关键词：B. Microstructure ; B. Grain boundaries ; C. Optical properties ; 1123  ; nm laser output
• 刊名：Ceramics International
• 出版年：2012
• 出版时间：December, 2012
• 年：2012
• 卷：38
• 期：8
• 页码：6969-6973
• 全文大小：830 K

文摘

Transparent Nd:YAG ceramics were fabricated by solid-state reactive sintering, a mixture of commercial Al₂O₃, Y₂O₃, and Nd₂O₃ powders, and their microstructure and optical properties were investigated. A fully dense 1.0 at. % Nd:YAG ceramic with an average grain size of ¡«15 ¦Ìm was obtained by vacuum sintering at 1750 ¡ãC for 50 h. The optical in-line transmittance of the corresponding sample was very close to that of single crystal. Diode-side-pumped laser operation with two ceramic rods (?6¡Á100 mm²) was demonstrated. When the pump power was 2000 W, the output power of 509 W at 1123 nm for Nd:YAG ceramic laser was obtained, and the optical-to-optical conversion efficiency was 25.5 % . 509 W is the highest laser output power for an Nd:YAG laser (including ceramic and single crystal) operating at 1123 nm to date.