High average power diode end-pumped composite Nd:YAG laser passively Q-switched by Cr4+:YAG saturable absorber
High average power diode end-pumped composite Nd:YAG laser passively Q-switched by Cr4+:YAG saturable absorber
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DOI：
10.1143/jjap.40.1253
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发表时间：
2001-03-01
期刊：
影响因子：
--
通讯作者：
Taira, T
中科院分区：
文献类型：
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作者：
Pavel, N;Saikawa, J;Taira, T
我们报道了一种二极管端面泵浦的复合Nd:YAG激光器，它以Cr4+:YAG晶体作为可饱和吸收体进行被动调Q。对于平均功率为2.6 W、脉宽为16.8 ns且能量为272 μJ的激光脉冲，其最大峰值功率超过16 kW。当激光器以24.0 kHz的重复频率工作，脉宽为47.8 ns（峰值功率为3.7 kW），光束质量M² = 1.34时，最大平均功率为4.2 W。建立了一个同时考虑有源介质和可饱和吸收体动力学的速率方程模型。实验结果与模型吻合良好。
We report a diode end-pumped composite Nd:YAG laser, passively Q-switched by a Cr4+:YAG crystal as saturable absorber. The maximum peak power exceeded 16 kW for an average power of 2.6 W, laser pulses of 16.8-ns duration and 272-muJ energy. The maximum average power was 4.2 W with the laser operating at 24.0 kHz repetition frequency and 47.8-ns pulses duration (3.7 kW peak power) at a beam quality of M-2 = 1.34. A rate-equation model that considers both the active medium and the saturable absorber dynamics was developed. A good agreement between the experiments and modeling resulted.