High-repetition-rate eye-safe intracavity KTA OPO driven by a diode-end-pumped Q-switched Nd:YVO4 laser

High-repetition-rate eye-safe intracavity KTA OPO driven by a diode-end-pumped Q-switched Nd:YVO4 laser
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由二极管端泵浦 Q 开关 Nd:YVO4 激光器驱动的高重复率人眼安全腔内 KTA OPO

DOI:
10.1007/s00340-007-2820-6
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发表时间:
2007
期刊:
Appl Phys. B
影响因子:
--
通讯作者:
祝世宁
祝世宁
中科院分区:
其他
文献类型:
--
作者:
祝世宁

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首次提出了一种人眼安全、高重复频率、单谐振腔内纳秒光学参量振荡器(IOPO),该振荡器基于非临界位相匹配的KTA晶体,由二极管端面泵浦的声光调Q激光器驱动。在吸收泵浦功率为11.3W的情况下,与25 mm长的KTA晶体同步获得了1.1W的平均功率和2.5ns30 kHz重复频率的信号波长(1534 Nm)的脉冲宽度。相应的峰值功率和单脉冲能量分别达到14.7kW和36.7kW·μJ,半导体激光功率到OPO信号输出功率的转换效率为9.8%,相应的斜率效率为15.4%。
An eye-safe, high-repetition-rate, single-resonant nanosecond intracavity optical parametric oscillator (IOPO), based on a non-critically phase-matched KTA crystal driven by a diode-end-pumped acousto-optically Q-switchedNd:YVO4 laser, was demonstrated for the first time to our knowledge. With an absorbed pump power of 11.3 W, 1.1 W average power and 2.5 ns pulse width at the signal (1534 nm) wavelength for 30-kHz repetition rate are synchronously achieved with the 25 mm long KTA crystal. The corresponding peak power and single pulse energy are estimated to be up to 14.7 kW and 36.7 μJ. The conversion efficiency from diode laser power to OPO signal output power was 9.8% and the corresponding slope efficiency was 15.4%.
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