Suzuki Masato, Yamane Keisaku, Oka Kazuhiko, Toda Yasunori, Morita Ryuji
Department of Applied Physics, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, 060-8628, Japan.
Faculty of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, 036-8561, Japan.
Sci Rep. 2019 Jul 10;9(1):9979. doi: 10.1038/s41598-019-46390-7.
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.
我们通过使用一种将干涉测量法和成像偏振测量法相结合的矢量场重建（VFR）技术，展示了对矢量光束状态（VBSs）的全面定量分析，其中该分析是通过VBSs的圆柱偏振拉盖尔 - 高斯（LG）模式展开给出的。从圆柱偏振LG模式光束的测试示例中，我们获得了VBSs的复振幅分布，并在径向和方位角方向上对其进行了定量评估。结果表明，我们生成了纯度高达98%的（l, p） = （1, 0）LG径向偏振态。我们还认为，圆柱偏振LG模态分解对于详细讨论实验结果具有重要意义，例如模式纯度和模式污染的分析。因此，VFR技术对于分析由激光器和转换器产生的偏振结构光束具有重要意义。
