Comprehensive quantitative analysis of vector beam states based on vector field reconstruction
Comprehensive quantitative analysis of vector beam states based on vector field reconstruction
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DOI：
10.1038/s41598-019-46390-7
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发表时间：
2019-07
影响因子：
4.6
通讯作者：
Masato Suzuki;K. Yamane;K. Oka;Y. Toda;R. Morita
中科院分区：
文献类型：
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作者：
Masato Suzuki;K. Yamane;K. Oka;Y. Toda;R. Morita
我们展示了一个全面的定量分析矢量光束状态（VBSs）通过使用矢量场重建（VFR）技术集成干涉测量和成像偏振法，其中分析给出了一个圆柱偏振拉盖尔-高斯（LG）模式展开的VBSs。从圆柱极化LG模光束的实验实例中，我们得到了vb在径向和方位角上的复杂振幅分布，并对其进行了定量评价。结果表明，我们得到了纯度高达98%的(l,p) = (1,0) LG径向极化态。我们还认为，圆柱极化LG模态分解对实验结果的详细讨论，如模态纯度和模态污染的分析是有意义的。因此，VFR技术对于分析由激光器和变换器产生的偏振结构光束具有重要意义。
We demonstrate a comprehensive quantitative analysis of vector beam states (VBSs) by using a vector field reconstruction (VFR) technique integrating interferometry and imaging polarimetry, where the analysis is given by a cylindrically polarized Laguerre–Gaussian (LG) mode expansion of VBSs. From test examples of cylindrically polarized LG mode beams, we obtain the complex amplitude distributions of VBSs and perform their quantitative evaluations both in radial and azimuthal directions. The results show that we generated (l,p) = (1, 0) LG radially polarized state with a high purity of 98%. We also argue that the cylindrically polarized LG modal decomposition is meaningful for the detail discussion of experimental results, such as analyses of mode purities and mode contaminations. Thus the VFR technique is significant for analyses of polarization structured beams generated by lasers and converters.