Open AccessAnalytical full complex-amplitude control strategy for metasurface
Author(s) -
Chao Wu,
Li Na Quan,
Song Zhao,
Zhihui Zhang,
Shijie Wei,
Hongqiang Li
Publication year - 2021
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/ac17df
Subject(s) - physics , amplitude , phase (matter) , microwave , modulation (music) , amplitude modulation , optics , phase control , frequency modulation , acoustics , quantum mechanics , radio frequency , telecommunications , computer science
We proposed a meta-atom design strategy that can achieve full complex-amplitude modulation based on analytical method for circularly polarized waves. The meta-atom can be regarded as two cascaded quarter wave plates, the orientation angles of which provide two degrees of freedom for obtaining arbitrary amplitude and phase modulation through accurate analytical method. As verification, a microwave meta-atom is designed and used to realize lateral and axial dual focusing. The proposed design strategy provides a straightforward route for full, continuous control of both amplitude and phase, and can stimulate various advanced meta-devices.