Mid-infrared ZGP-OPO with a high optical-to-optical conversion efficiency of 75.7.
Mid-infrared ZGP-OPO with a high optical-to-optical conversion efficiency of 75.7.
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DOI：
10.1364/oe.25.003373
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发表时间：
2017-02
期刊：
影响因子：
3.8
通讯作者：
Li Wang;Tinglun Xing;Shuwu Hu;Xianyou Wu;Haixin Wu;Ji-yang Wang;Hai-he Jiang
中科院分区：
文献类型：
--
作者：
Li Wang;Tinglun Xing;Shuwu Hu;Xianyou Wu;Haixin Wu;Ji-yang Wang;Hai-he Jiang
我们实验证明了ZnGeP 2基光参量振荡器（ZGP-OPO）的光-光转换效率的记录。为了提高转换效率，我们设计并构造了一个双程泵浦的高增益OPO和一个匹配的大尺寸高峰值功率泵浦光，以抑制空间走离和转换。在中红外3-5 μm波段，双谐振ZGP-OPO获得了19 mJ、脉宽27.8ns的脉冲能量，光束质量M2约为9.6，光光转换效率高达75.7%。
We experimentally demonstrate a ZnGeP2 based optical parametric oscillator (ZGP-OPO) with a record of the optical-to-optical conversion efficiency. To improve the conversion efficiency, we design and construct a double-pass pumped high-gain OPO and a matched large-sized high-peak-power pump beam to suppress the spatial walk-off and conversion. Pulse energy of 19 mJ with pulse width of 27.8 ns at 5 Hz in the mid-infrared 3-5 μm waveband is obtained in the doubly resonated ZGP-OPO, the beam quality M2 is about 9.6, and the corresponding optical-to-optical conversion efficiency reaches up to 75.7%.