角动量
完美导体
物理
光学
间断(语言学)
超材料
导线
栅栏
旋涡
平面波
经典力学
散射
几何学
数学分析
数学
作者
Menglin L. N. Chen,Li Jun Jiang,Wei E. I. Sha
标识
DOI:10.1109/lawp.2019.2894772
摘要
A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.
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