Backward Energy Flux in Sharp Focus of Beams with Linear and Circular Polarization

被引：0
|
作者：
Kotlyar, V. V. [1 ,2 ]
Nalimov, A. G. [1 ,2 ]
Stafeev, S. S. [1 ,2 ]
机构：
[1] RAS, Branch FSRC Crystallog & Photon, IPSI, Samara, Russia
[2] Samara Natl Res Univ, Samara, Russia
来源：
2019 PHOTONICS & ELECTROMAGNETICS RESEARCH SYMPOSIUM - SPRING (PIERS-SPRING) | 2019年
基金：
俄罗斯科学基金会;
关键词：
OPTICAL VORTEX;
D O I：
10.1109/piers-spring46901.2019.9017616
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Using the FDTD-aided numerical simulation, we show that uniform linearly or circularly polarized light passing through the described optical metasurface and then tightly focused with a binary zone plate generates an on-axis near-focus energy backflow comparable in magnitude with the incident energy. Notably, the magnitude of the reverse energy flow is shown to be the same when focusing a circularly polarized optical vortex with topological charge m = 2 and a light beam with the second-order polarization singularity.
引用
收藏
页码：335 / 338
页数：4
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