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arXiv · 2504.03115

Dispersion-Engineered Compact Twisted Metasurfaces Enabling 3D Frequency-Reconfigurable Holography

Cheng Pang·Yuzhong Wang·Pengcheng Wang·Axiang Yu·Yiding Liu·Ziang Yue·Mingshuang Hu·Jianqi Hu·Yongkang Dong·Jiaran Qi
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Abstract

Flexible dispersion manipulation is critical for holography to achieve broadband imaging or frequency division multiplexing. Within this context, metasurface-based holography offers advanced dispersion control, yet dynamic reconfigurability remains largely unexplored. This work develops a dispersion-engineered inverse design framework that enables 3D frequency-reconfigurable holography through a twisted metasurface system. The physical implementation is based on a compact layered configuration that cascades the broadband radiation-type metasurface (RA-M) and phase-only metasurface (P-M). The RA-M provides a phase-adjustable input to excite P-M, while the rotation of P-M creates a reconfigurable response of holograms. By employing the proposed scheme, dynamic switching of frequency-space multiplexing and achromatic holograms are designed and experimentally demonstrated in the microwave region. This method advances flexible dispersion engineering for metasurface-based holography, and the compact system holds significant potential for applications in ultra-broadband imaging, high-capacity optical display, and switchable meta-devices.

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Cheng Pang, Yuzhong Wang, Pengcheng Wang, Axiang Yu, Yiding Liu, Ziang Yue, Mingshuang Hu, Jianqi Hu, Yongkang Dong, Jiaran Qi. 2025-04-04. Dispersion-Engineered Compact Twisted Metasurfaces Enabling 3D Frequency-Reconfigurable Holography. https://arxiv.org/abs/2504.03115

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