Efficient pumping scheme for neodymium-doped materials by direct excitation of the upper lasing level.
Efficient pumping scheme for neodymium-doped materials by direct excitation of the upper lasing level.
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DOI：
10.1364/ao.38.007382
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发表时间：
1999-12
期刊：
影响因子：
1.9
通讯作者：
R. Lavi;Steven Jackel;Y. Tzuk;Michael Winik;E. Lebiush;Mordechai Katz;I. Paiss
中科院分区：
文献类型：
--
作者：
R. Lavi;Steven Jackel;Y. Tzuk;Michael Winik;E. Lebiush;Mordechai Katz;I. Paiss
实验证明了一种有效的泵浦方案，该方案涉及直接激发Nd（3+）离子的上激光能级。将Nd:YAG R2 （869 nm）和Nd:YVO(4) （880 nm）的直接上激光能级抽运结果与传统的约808 nm抽运带激发进行了比较。采用可调谐连续波钛蓝宝石激光器作为泵浦源。在Nd:YAG中，振荡器斜率效率提高了10%，阈值降低了11%。在Nd:YVO(4)中，斜率效率提高了5%，阈值降低了11%。这些结果与理论相符。光效率的提高表明激光材料的热负荷可以大大降低。
An efficient pumping scheme that involves direct excitation of the upper lasing level of the Nd(3+) ion is demonstrated experimentally. The results obtained for direct upper laser level pumping of Nd:YAG R2 (869 nm) and Nd:YVO(4) (880 nm) were compared with traditional approximately 808-nm pump band excitation. A tunable cw Ti:sapphire laser was used as the pump source. In Nd:YAG, the oscillator slope efficiency increased by 10% and the threshold decreased by 11%. In Nd:YVO(4), the slope efficiency increased by 5% and the threshold decreased by 11%. These results agree with theory. The increase in optical efficiency indicates that laser material thermal loading can be substantially reduced.