中国物理B ›› 2026, Vol. 35 ›› Issue (6): 64211-064211.doi: 10.1088/1674-1056/ae5592

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Design of a tunable Airy zoom metasurface based on the moiré effect

Baibing Li(李白冰)1, Jiatong Liu(刘家同)2, Hao Huang(黄浩)1,†, and Ruiting Hao(郝瑞亭)2,‡   

  1. 1 Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China;
    2 College of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
  • 收稿日期:2026-01-04 修回日期:2026-03-10 接受日期:2026-03-23 发布日期:2026-06-15
  • 通讯作者: Hao Huang, Ruiting Hao E-mail:hhuang@gxu.edu.cn;ruitinghao@ynnu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant No. 62504057) and the Special Fund for Science and Technology Development of Guangxi Zhuang Autonomous Region, China (Grant No. AD25069078).

Design of a tunable Airy zoom metasurface based on the moiré effect

Baibing Li(李白冰)1, Jiatong Liu(刘家同)2, Hao Huang(黄浩)1,†, and Ruiting Hao(郝瑞亭)2,‡   

  1. 1 Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China;
    2 College of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
  • Received:2026-01-04 Revised:2026-03-10 Accepted:2026-03-23 Published:2026-06-15
  • Contact: Hao Huang, Ruiting Hao E-mail:hhuang@gxu.edu.cn;ruitinghao@ynnu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant No. 62504057) and the Special Fund for Science and Technology Development of Guangxi Zhuang Autonomous Region, China (Grant No. AD25069078).

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摘要： Dynamic control of Airy beam focusing is important for applications in optical manipulation, imaging, and laser processing. However, most metasurface-based Airy beam generators are statically designed, and tunability typically relies on mechanical translation, which limits system compactness and integration. Here, we propose a tunable Airy zoom metasurface based on the moiré effect. The device consists of two rotationally symmetric dielectric metasurfaces composed of titanium dioxide nanopillars. By encoding the Airy autofocusing phase and exploiting the rotational moiré modulation between the two layers, the output phase distribution can be continuously tuned through relative rotation, enabling dynamic control of the Airy beam focal position. Numerical simulations demonstrate that at a wavelength of 610 nm the focal length can be continuously tuned from 8 μm to 32 μm. Compared with conventional quadratic-phase moiré zoom metasurfaces, the proposed design preserves the nondiffracting characteristics of Airy beams while providing improved focusing efficiency and enhanced lateral resolution. This work offers a compact and mechanically simple approach for dynamically controllable metasurface optics and may facilitate the development of integrated and programmable photonic systems.

关键词: metasurface, airy beam, autofocus

Abstract: Dynamic control of Airy beam focusing is important for applications in optical manipulation, imaging, and laser processing. However, most metasurface-based Airy beam generators are statically designed, and tunability typically relies on mechanical translation, which limits system compactness and integration. Here, we propose a tunable Airy zoom metasurface based on the moiré effect. The device consists of two rotationally symmetric dielectric metasurfaces composed of titanium dioxide nanopillars. By encoding the Airy autofocusing phase and exploiting the rotational moiré modulation between the two layers, the output phase distribution can be continuously tuned through relative rotation, enabling dynamic control of the Airy beam focal position. Numerical simulations demonstrate that at a wavelength of 610 nm the focal length can be continuously tuned from 8 μm to 32 μm. Compared with conventional quadratic-phase moiré zoom metasurfaces, the proposed design preserves the nondiffracting characteristics of Airy beams while providing improved focusing efficiency and enhanced lateral resolution. This work offers a compact and mechanically simple approach for dynamically controllable metasurface optics and may facilitate the development of integrated and programmable photonic systems.

Key words: metasurface, airy beam, autofocus

中图分类号:  (Lenses, prisms and mirrors)

  • 42.79.Bh
42.25.Fx (Diffraction and scattering) 78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials)