Dark-spot formation by vector beams.
Dark-spot formation by vector beams.
复制标题
DOI：
10.1364/ol.33.002326
复制
发表时间：
2008-10
期刊：
影响因子：
3.6
通讯作者：
Y. Kozawa;S. Sato
中科院分区：
文献类型：
--
作者：
Y. Kozawa;S. Sato
通过计算高阶横模矢量光束与线偏振和圆偏振的拉盖尔-高斯光束聚焦产生的焦点附近的电场分布，证明了暗斑的形成。暗斑在径向上的大小从一个光束到另一个光束是不同的，但是在轴向上的大小几乎是相同的。径向偏振的TM 02模光束被预测仅由轴向电场形成暗斑。
Dark-spot formation is demonstrated by calculating electric-field distribution near the focus produced by focusing higher-order transverse-mode vector beams with radial and azimuthal polarizations in addition to Laguerre-Gaussian beams with linear and circular polarizations. The size of the dark spot in the radial direction varies from one beam to another, but the size in the axial direction is almost the same. The radially polarized TM02-mode beam is predicted to form a dark spot solely by an axial electric field.