A highly-efficient tunable 1.6 μm MgO:PPLN-OPO, which we believe to be the first one pumped by a diode-end-pumped Raman laser, is demonstrated. A good beam-quality of actively Q-switched Nd:YVO4/YVO4 Raman laser at 1176 nm and a good mode matching of the whole system resulted in a high-performance OPO. The highest Raman-to-signal conversion efficiency was 49.5% at 1638.8 nm when the incident Raman power was 2 W. The maximum output power of 3.2 W at 1663.5 nm with the pulse-width of 2.85 ns was obtained pumped by 7.57-W Raman laser. Meanwhile, the linewidth was less than 0.3 nm and a high beam quality with M2 factor of 1.92 was obtained.

中文翻译：

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由 Nd:YVO4/YVO4 拉曼激光器泵浦的高效可调 1.6-μm MgO:PPLN 光学参量振荡器

展示了一种高效的可调谐 1.6 μm MgO:PPLN-OPO，我们认为这是第一个由二极管端泵浦拉曼激光器泵浦的。1176 nm 的主动调 Q Nd:YVO4/YVO4 拉曼激光器的良好光束质量和整个系统的良好模式匹配导致高性能 OPO。当入射拉曼功率为 2 W 时，在 1638.8 nm 处的最高拉曼信号转换效率为 49.5%。在 1663.5 nm 处的最大输出功率为 3.2 W，脉冲宽度为 2.85 ns 是由 7.57-W 拉曼泵浦获得的激光。同时，线宽小于 0.3 nm，获得了 M2 因子为 1.92 的高光束质量。