Linear and angular momenta in tightly focused vortex segmented beams of light(Invited Paper)  

作　　者：Martin Neugebauer Andrea Aiello Peter Banzer 

机构地区：[1]Max Planck Institute for the Science of Light, Staudtstr. 2, Erlangen D-91058, Germany [2]Institute of Optics, Information and Photonics, University Erlangen-Nuremberg, Staudtstr. 7/B2, Erlangen D-91058, Germany

出　　处：《Chinese Optics Letters》2017年第3期7-11,共5页中国光学快报（英文版）

摘　　要：We investigate the linear momentum density of light, which can be decomposed into spin and orbital parts, in the complex three-dimensional field distributions of tightly focused vortex segmented beams. The chosen angular spectrum exhibits two spatially separated vortices of opposite charge and orthogonal circular polarization to generate phase vortices in a meridional plane of observation. In the vicinity of those vortices, regions of negative orbital linear momentum occur. Besides these phase vortices, the occurrence of transverse orbital angular momentum manifests in a vortex charge-dependent relative shift of the energy density and linear momentum density.We investigate the linear momentum density of light, which can be decomposed into spin and orbital parts, in the complex three-dimensional field distributions of tightly focused vortex segmented beams. The chosen angular spectrum exhibits two spatially separated vortices of opposite charge and orthogonal circular polarization to generate phase vortices in a meridional plane of observation. In the vicinity of those vortices, regions of negative orbital linear momentum occur. Besides these phase vortices, the occurrence of transverse orbital angular momentum manifests in a vortex charge-dependent relative shift of the energy density and linear momentum density.

关 键 词：Invited Paper VSB Linear and angular momenta in tightly focused vortex segmented beams of light 

分 类 号：O43[机械工程—光学工程]