Diode-pumped quasi-cw intracavity optical parametric oscillator at 1.57 μm with efficient pulse shortening
Diode-pumped quasi-cw intracavity optical parametric oscillator at 1.57 μm with efficient pulse shortening
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DOI：
10.1007/pl00021130
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发表时间：
2000-06
期刊：
影响因子：
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通讯作者：
A. Agnesi;S. Dell'acqua;G. Reali
中科院分区：
文献类型：
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作者：
A. Agnesi;S. Dell'acqua;G. Reali
报道了一种采用腔内光参量振荡器的被动调Q二极管泵浦Nd：YAG激光器，在1572 nm处获得了脉宽为1.6ns、峰值功率为75 kW、能量为120 μJ、光束质量为M2 <$1.1、脉冲幅度波动小于2%的激光脉冲。在200 Hz重复频率、80 W峰值功率的单二极管条泵浦下，被动调Q激光器在1064 nm处产生了12 ns、460 μJ能量的线偏振脉冲。一个不同的，更复杂的腔设置优化被动Q开关产生160 μJ 2 ns的信号脉冲，峰值功率略有增加。
We report on a passively Q-switched diode-pumped Nd:YAG laser including an intracavity optical parametric oscillator, that generates 120-μJ pulses with 1.6 ns time duration (75 kW peak power) at 1572 nm with excellent beam quality (M2≈1.1) and pulse amplitude fluctuation ≈2%. The passively Q-switched laser alone, pumped by a 200-Hz repetition rate, 80-W peak-power single diode bar, produced linearly polarized pulses of 12 ns and 460 μJ energy at 1064 nm. A different, more complex cavity setup optimizing the passive Q-switching yielded 160-μJ 2-ns signal pulses with slightly increased peak power.