Controlled negative energy flow in the focus of a radial polarized optical beam

Optics Express
Hehe LiXinzhong Li

Abstract

The controlled and continuous negative energy flow (from negative to positive) on the optical axis in the focal region is obtained by adjusting the polarization distribution of the input second-order radially polarized beam (the polarization topological charge is equal to 2). Moreover, the similar evolution of negative energy flow also can be achieved for the tightly focused vector beams with polarization topological charge -2. It is because both the beams with polarization topological charges 2 and -2 can possess the same polarization and spin flow density distributions with the help of the polarization modulation. The results provide a potential method for modulating the effects induced by the spin-orbit coupling in tight focusing of optical beam.

References

Sep 4, 2007·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Andrey V Novitsky, Denis V Novitsky
Jan 15, 2011·Physical Review Letters·Xi-Lin WangHui-Tian Wang
Nov 29, 2012·Optics Express·Pablo Vaveliuk, Oscar Martinez-Matos
Feb 14, 2015·Optics Letters·Pravin Vaity, Leslie Rusch
Jul 21, 2015·Optics Express·Zhaozhong ChenJianping Ding
Sep 9, 2016·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·F G Mitri
Sep 29, 2017·Optics Letters·Chenliang ChangJianping Ding
Oct 28, 2019·Light, Science & Applications·Yijie ShenXiaocong Yuan

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