论文标题
近期光学涡流的纵向田地的相关性
Relevance of Longitudinal Fields of Paraxial Optical Vortices
论文作者
论文摘要
纵向电磁场通常与强烈的非律束中通常显性的横向成分相当。对于光学涡流模式，这里强调了它们的角动量特性如何产生纵向场，即使在近后制度内，也必须考虑这些纵向磁场。量化的拉瓜仪模式的一阶纵向成分被得出并相对于近后参数进行了数值研究，突出了源自较弱的，较弱的旁梁的纵向场和自旋轨道相互作用。对与原子，分子和其他纳米结构相互作用的光学涡度的近似近似的有效性施加了新的限制。
Longitudinal electromagnetic fields generally become comparable with the usually dominant transverse components in strongly-focussed, non-paraxial beams. For optical vortex modes it is highlighted here how their angular momentum properties produce longitudinal fields that in general must be accounted for, even within the paraxial regime. First-order longitudinal components of quantized Laguerre-Gaussian modes are derived and numerically studied with respect to the paraxial parameter, highlighting light-matter and spin-orbit interactions that stem from longitudinal fields of weakly-focussed, paraxial beams in free space. New restrictions are cast on the validity of the paraxial approximation for optical vortices interacting with atoms, molecules and other nanostructures.
