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中文摘要：
萨格纳克干涉仪中传播的两束光具有相同的光程,因而适合用于高稳定的合束系统,螺旋相位片作为无源、分离器件具有螺旋光束转化效率高、工作环境适用条件低等优点。研究将萨格纳克干涉仪和螺旋相位片结合起来生成矢量光束的方法具有重要的研究意义。通过分析光束的轨道角动量态和偏振态在萨格纳克干涉仪中的演化规律,优化设计出了等腰直角三角形的合束光路结构。合束装置可以不使用1/2波片进行光束偏振态调制,因此光路结构更紧凑和稳定。通过旋转检偏器方法测量了生成矢量光束的阶数。实验结果证实了合束方法的高稳定性和高效率。
英文摘要：
Two beams in the traveling the same path with opposite directions makes it is more suitable for stability beam combination. As a passive and separation device, spiral phase plate has the advantages of high efficiency and low working conditions. It has important significance to propose a method to generation vector beam with Sagnac interferometer and spiral phase plate combination. By analyzing the evolution of the orbital angular momentum states and the polarization states of the beams in the Sagnac interferometer, an isosceles right triangle optical structure beam combination system was designed. Without half wave plate, the optical structure was more compact and stability. The order of generated vector beams were checked with rotation of polarizer. The experimental results confirm the high stability and high efficiency of the combined beam method.
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