High-energy LDA side-pumped electro-optical Q-switched Nd:YAG ceramic laser
High-energy LDA side-pumped electro-optical Q-switched Nd:YAG ceramic laser
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DOI：
10.1364/josab.24.001042
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发表时间：
2007-05
影响因子：
1.9
通讯作者：
Yunfeng Qi;Xiaolei Zhu;Q. Lou;Jianghua Ji;Jing-xing Dong;Runrong Wei
中科院分区：
文献类型：
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作者：
Yunfeng Qi;Xiaolei Zhu;Q. Lou;Jianghua Ji;Jing-xing Dong;Runrong Wei
采用均匀紧凑的侧面泵浦系统，实现了高能量电光调Q Nd：YAG陶瓷激光器。采用420 W准连续激光二极管阵列抽运808 nm，调制重复频率100 Hz，获得了50 mJ的1064 nm激光输出，脉宽10 ns，平均输出功率5 W，峰值功率5 MW。相应的斜率效率为29.8%。激光系统运行稳定，没有观察到饱和现象，这意味着可以预期更高的输出能量。比较了Nd：YAG陶瓷激光器和单晶激光器的激光参数，详细研究了不同重复频率下Nd：YAG陶瓷激光器的脉冲特性。Nd：YAG陶瓷是一种极具潜力的高能激光介质。
By employing a uniformly compact side-pumping system, a high-energy electro-optical Q-switched Nd:YAG ceramic laser has been demonstrated. With 420 W quasi-cw laser-diode-array pumping at 808 nm and a 100 Hz modulating repetition rate, 50 mJ output energy at 1064 nm was obtained with 10 ns pulse width, 5 W average output power, and 5 MW peak power. Its corresponding slope efficiency was 29.8%. The laser system operated quite stably and no saturation phenomena have been observed, which means higher output energy could be expected. Laser parameters between ceramic and single-crystal Nd:YAG lasers have been compared, and pulse characteristics of Nd:YAG ceramic with different repetition rate have been investigated in detail. The still-evolving Nd:YAG ceramics are potential super excellent media for high-energy laser applications.