偏振无关的旋光双反射结构的实验研究

完成了偏振无关双旋光晶体双反射结构的实验研究. 根据其偏振补偿特点对双旋光晶体双反射结构进行简化, 提出了一种偏振无关的单旋光晶体双反射结构. 实验表明, 两种反射结构的偏振保持度均能达到99.97%以上. 作为对比, 分别测试了单个反射镜反射90°和两个反射镜反射90°时的输出光偏振态. 该条件下, 无保偏处理的反射镜的偏振保持度分别只有92.1%和76.2%. 关键词： 偏振态 偏振无关反射 旋光晶体

Experimental study on polarization-independent reflector structure based on magneto-optical crystal and two mirrors

The experimental demonstration of polarization-independent reflection structure that consists of two magneto-optical crystals and two mirrors is reported. According to the characteristics of polarization compensation, the reflection structure was simplified in this paper. A single magneto-optical crystal and two mirrors reflection structure is presented to simplify the polarization-independent reflection structure. The experiment shows that the degrees of polarization maintenance of the two reflection structures are both higher than 99.97%. By way of contrast, the polarization states of 90° reflection laser of single mirror and two mirrors are measured. Under these conditions, the degrees of polarization maintenance of mirrors are 92.1% and 76.2%, respectively.
Keywords： polarization state polarization independent reflection magneto-optical crystal