Comparison of 885 nm pumping and 808 nm pumping in Nd:CNGG laser operating at 1061 nm and 935 nm

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• 作者：Yuxian Shi ; Qinan Li ; Dongxiang Zhang ; Baohua Feng ; Zhiguo Zhang ; Huaijin Zhang ; Jiyang Wang
• 关键词：Nd ; CNGG crystal ; Diode-pumped solid-state laser ; Direct pumping
• 刊名：Optics Communications
• 出版年：2010
• 出版时间：15 July 2010
• 年：2010
• 卷：283
• 期：14
• 页码：2888-2891
• 全文大小：433 K

文摘

A Nd:CNGG laser operated at 935 nm and 1061 nm pumped at 885 nm and 808 nm, respectively, is demonstrated. The 885 nm direct pumping scheme shows some advantages over the 808 nm traditional pumping scheme. It includes higher slope efficiency, lower threshold, and better beam quality at high output power. With the direct pumping, the slope efficiency increases by 43 % and the threshold decreases by 10 % compared with traditional pumping in the Nd:CNGG laser operated at 935 nm. When the Nd:CNGG laser operates at 1061 nm, the direct pumping increases the slope efficiency by 14 % with a 20 % reduction in the oscillation threshold.