论文部分内容阅读
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。
The two beams of light propagating in the Sagnac interferometer have the same optical path and are therefore suitable for highly stable combined systems. The spiral phase plate as a passive, splitter device has a spiral beam with high conversion efficiency and low working conditions Etc. It is of great significance to study the method of combining the Sagnac interferometer and the spiral phase slice to generate a vectorial beam. By analyzing the evolution law of the orbital angular momentum state and polarization state of the light beam in the Sagnac interferometer, the optical path structure of isosceles right-angled triangle is optimized. Beam combining device can not use the 1/2 wave plate for polarization state modulation, so the optical path structure is more compact and stable. The order of generating the vectorial beam was measured by the method of rotating the analyzer. The experimental results confirm the high stability and high efficiency of the method.