论文标题
矢量涡流梁极化奇异性的新机制
New mechanism for polarization singularity of vector vortex beams
论文作者
论文摘要
最近意识到，光束积分表示中平面波模式的极化基础需要取决于由无差异的麦克斯韦方程产生的自由度。这是文献中经常引入的实际单元向量，称为Stratton载体。如此确定的极化基碱在与Stratton载体平行的动量下是奇异的。在这里，我们表明，积分表示给出的向量涡流梁的极化奇异性来自与Stratton载体相关的极化碱基的奇异性。还讨论了矢量涡流梁及其极化碱基的极化结构的一致性。
It was recently realized that the polarization bases of the plane-wave modes in the integral representation of a light beam need to be determined by a degree of freedom arising from the divergence-free Maxwell's equation. This is a frequently introduced real unit vector in the literature, called Stratton vector. The polarization bases so determined are singular at the momentum that is parallel to the Stratton vector. Here we show that the polarization singularity of vector vortex beams given by the integral representation comes from the singularity of the polarization bases in association with the Stratton vector. The consistency of the polarization structure of the vector vortex beams with their polarization bases is also discussed.
