Managing focal fields of vector beams with multiple polarization singularities
Managing focal fields of vector beams with multiple polarization singularities
复制标题
管理具有多个偏振奇点的矢量光束的焦场
DOI：
10.1364/ao.55.009049
复制
发表时间：
2016-11-10
期刊：
影响因子：
1.9
通讯作者：
Zhao, Jianlin
中科院分区：
文献类型：
--
作者：
Han, Lei;Liu, Sheng;Zhao, Jianlin
We explore the tight focusing behavior of vector beams with multiple polarization singularities, and analyze the influences of the number, position, and topological charge of the singularities on the focal fields. It is found that the ellipticity of the local polarization states at the focal plane could be determined by the spatial distribution of the polarization singularities of the vector beam. When the spatial location and topological charge of singularities have even-fold rotation symmetry, the transverse fields at the focal plane are locally linearly polarized. Otherwise, the polarization state becomes a locally hybrid one. By appropriately arranging the distribution of the polarization singularities in the vector beam, the polarization distributions of the focal fields could be altered while the intensity maintains unchanged. (C) 2016 Optical Society of America
