High-power eye-safe intracavity KTA OPO driven by a diode-pumped Q-switched Nd:YAG laser
High-power eye-safe intracavity KTA OPO driven by a diode-pumped Q-switched Nd:YAG laser
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DOI：
10.1002/lapl.200810076
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发表时间：
2008-12
影响因子：
1.7
通讯作者：
B. Zhang;X. Dong;J. L. He;H. T. Huang;K. Yang;C. Zuo;J. Xu;S. Zhao
中科院分区：
文献类型：
--
作者：
B. Zhang;X. Dong;J. L. He;H. T. Huang;K. Yang;C. Zuo;J. Xu;S. Zhao
报道了一种工作在1534 nm信号波长的高功率、高稳定、人眼安全的腔内光参量振荡器。当采用25 mm长的KTA晶体时，在最大808 nm泵浦功率为143W、重复频率为6 kHz时，最大平均输出功率为5.35W，最小脉宽为3.71 ns，1534 nm信号光与1064 nm基波光之间的光-光转换效率为31.1%。据我们所知，这是由二极管侧面泵浦的掺钕激光器驱动的KTA IOPO的最高转换效率。单脉冲能量和峰值功率分别为892kJ和287kW。在最大输出功率下，1小时内的功率不稳定性小于1.72%。
A high power, high stability, eye-safe intracavity optical parametric oscillator (IOPO) working at the signal wavelength of 1534 nm was demonstrated, in which a type of non-critically phase-matched KTiOAsO4 (KTA) crystals were pumped by a diode-side-pumped acousto-optically Q-switched Nd:YAG laser. When a 25 mm-long KTA crystal was employed, a maximum average output power of 5.35 W and the minimum pulse width of 3.71 ns were obtained at the maximum 808 nm pump power of 143 W and the repetition rate of 6 kHz, giving an optical-optical conversion efficiency of 31.1% between the signal light at 1534 nm and the fundamental light at 1064 nm. To our best knowledge, it's the highest conversion efficiency for the KTA IOPO driven by diode-side-pumped Nd-doped lasers. The single pulse energy and peak power were determined to be 892 μJ and 287 kW, respectively. The power instability at the maximum output power was observed to be less than 1.72% during one hour.