Spin-to-orbital angular momentum conversion through a coplanar converter

被引：0
|
作者：
Qu, Bingyue [1 ]
Shi, Hongyu [2 ]
Wang, Jiafu [3 ]
Yang, Jie [2 ]
Pang, Yongqiang [1 ]
Zhang, Anxue [2 ]
Xu, Zhuo [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Peoples R China
[3] Air Force Engn Univ, Coll Sci, Xian 710051, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2022年 / 55卷 / 18期
关键词：
spin angular momentum; orbital angular momentum; spin-to-orbital momentum conversion; LIGHT;
D O I：
10.1088/1361-6463/ac4d4a
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spin angular momentum (SAM) and orbital angular momentum (OAM), associated with the circular polarization and helical phase front of an electromagnetic wave, respectively, have been gaining increasing interest in various fields. In this paper, a new method of SAM to OAM conversion in the microwave band is proposed. The designed coplanar structure converses the SAM to OAM, whose three electric components, E-z, E-phi, and E-rho, carry same-order OAM. The paper explains the principle of SAM to OAM conversion and provides an experimental demonstration. Both simulation and measurement results demonstrate that this conversion method from SAM to OAM is feasible. Our work could provide a promising platform to study photonic spin-orbital interaction and find applications in the near-field vortex generators.
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页数：5
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