Photonics Research, Volume. 11, Issue 6, 1047(2023)
Six-channel programmable coding metasurface simultaneously for orthogonal circular and linear polarizations
Fig. 1. Conceptual illustration of the proposed PCM, which can realize tunable functions for four polarization states and in six channels. The inset describes the mechanism that the spin-decoupled programmable meta-atom achieves 1-bit digital phase modulation in six channels. YX channel denotes the conversion from
Fig. 2. (a) The schematic diagram of the spin-decoupled programmable meta-atom, where
Fig. 3. Simulated co-polarized and cross-polarized reflection (a), (b) amplitudes and (c), (d) phases of the spin-decoupled programmable meta-atom with four different PIN diode states under
Fig. 4. Phase distributions of the PCM in six channels in (a)–(f) Scheme A and (g)–(l) Scheme B.
Fig. 5. Simulated bistatic RCS curves (top panels) and 3D far-field scattering patterns (bottom panels) of Scheme A in (a)
Fig. 6. Simulated normalized scattering field distributions of Scheme A in (a)
Fig. 7. Simulated bistatic RCS curves (top panels), phase profiles of the scattering beams (middle panels), and 3D far-field scattering patterns (bottom panels) of Scheme B in (a)
Fig. 8. (a) Fabricated prototype of the proposed PCM. (b) Far-field experimental setup. The measured normalized far-field scattering patterns in (c)
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Tonghao Liu, Yueyu Meng, Jiafu Wang, Hua Ma, Ruichao Zhu, Chao Liu, Weihan Li, Zuntian Chu, Sai Sui, Tianshuo Qiu, Wenxuan Tang, Shaobo Qu. Six-channel programmable coding metasurface simultaneously for orthogonal circular and linear polarizations[J]. Photonics Research, 2023, 11(6): 1047
Category: Surface Optics and Plasmonics
Received: Jan. 20, 2023
Accepted: Apr. 26, 2023
Published Online: May. 29, 2023
The Author Email: Yueyu Meng (mengyy1990@163.com), Jiafu Wang (wangjiafu1981@126.com), Hua Ma (mahuar@xjtu.edu.cn)