聚焦、散射和成像系统中的自旋到轨道角动量转换。

Spin-to-orbital angular momentum conversion in focusing, scattering, and imaging systems.

作者信息

Bliokh Konstantin Y, Ostrovskaya Elena A, Alonso Miguel A, Rodríguez-Herrera Oscar G, Lara David, Dainty Chris

机构信息

Applied Optics Group, School of Physics, National University of Ireland, Galway, Galway, Ireland.

出版信息

Opt Express. 2011 Dec 19;19(27):26132-49. doi: 10.1364/OE.19.026132.

DOI:10.1364/OE.19.026132

PMID:22274201

Abstract

We present a general theory of spin-to-orbital angular momentum (AM) conversion of light in focusing, scattering, and imaging optical systems. Our theory employs universal geometric transformations of non-paraxial optical fields in such systems and allows for direct calculation and comparison of the AM conversion efficiency in different physical settings. Observations of the AM conversions using local intensity distributions and far-field polarimetric measurements are discussed.

摘要

我们提出了一种关于光在聚焦、散射和成像光学系统中自旋角动量到轨道角动量（AM）转换的通用理论。我们的理论采用了此类系统中非傍轴光场的通用几何变换，并允许直接计算和比较不同物理环境下的AM转换效率。文中还讨论了利用局部强度分布和远场偏振测量对AM转换的观测结果。