The multi-optical parametric oscillator (MOPO) based on electro-optical polarization mode conversion is reported in this paper, which get two idle lights at 3.3 μm and 3.84 μm simultaneously. In the optical parametric cavity, two electro-optical polarization mode converters are placed to rotate the parametric light polarization. When the electric field intensity of electro-optical polarization mode converters are 11.5 V/mm and 34.9 V/mm respectively, the maximum output power of 3.3 μm and 3.84 μm are 2.03 W and 2.25 W, the conversion efficiency to 1064 nm is 8.3% and 9.2%, and the power ratio of 3.3 μm to 3.84 μm is 0.90. The experimental results confirm that the electro-optical polarization mode converters can regulate the conversion of MOPO, resulting in the suppression of back conversion, and the adjustment of parametric light gain.

本文报道了一种基于电光偏振模式转换的多参数参量振荡器（MOPO），它同时获得了两个分别为3.3μm和3.84μm的空闲光。在光学参数腔中，放置两个电光偏振模式转换器以旋转参数光偏振。当电光偏振模式转换器的电场强度分别为11.5 V / mm和34.9 V / mm时，最大输出功率3.3μm和3.84μm为2.03 W和2.25 W，到1064 nm的转换效率为8.3％功率比为9.2％，而3.3μm至3.84μm的功率比为0.90。实验结果证实，电光偏振模式转换器可以调节MOPO的转换，从而抑制反向转换，并可以调节参数光增益。