随着光学操控技术的迅速发展, 测量与重建径向偏振光束（RPB）成为迫切任务之一。利用一套石英旋光片组合, 首先产生了RPB。借助计算机控制的CCD, 对RPB的斯托克斯矢量场分布进行了测量, 并获得其偏振态分布。结果表明: 所产生的RPB归一化功率偏差为0.054 8, 偏振偏差为0.004 4。利用干涉仪, 获得了RPB的相位分布, 相邻断面间平均相位差为1.471。最后, 通过偏振和相位信息的数据处理, 成功重建了RPB的矢量场分布, 并发现其拓扑荷在3左右。这些结论为实现精密量子调控与测量铺平了道路。

With rapid development of optical manipulation technology, it became urgent to measure and reconstruct the radially polarized beam (RPB). Utilizing a set of quartz rotators, the RPB was prepared firstly. In consideration of optical quality assessment, due to the direct connection with longitudinal component at the focal region, the parameter of polarization orientation and power deviation have been brought up and measured. A method to reconstruct the vector-structure of RPB was designed and implemented. Results show that the normalized amplitude deviation was 0.054 8 and polarization deviation is 0.004 4. Furthermore, by the interferometer, the phase distribution of the RPB has been achieved, and the average phase difference was 1.471 between neighboring sections. Finally, by processing the data of polarization and phase information, the vector-field of the RPB have been successfully reconstructed, the topological charge was 3, which paves the way for accurate quantum manipulation and measurement.