A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection

Engineering ›› 2024, Vol. 35 ›› Issue (4) : 69 -75. DOI: 10.1016/j.eng.2023.07.008

Research

Article

Fei Zhang ^a^,^b^,^d^,^#
, Minghao Liao ^a^,^b^,^c^,^#
, Mingbo Pu ^a^,^b^,^c^,^d^,^*
, Yinghui Guo ^a^,^b^,^c^,^d
, Lianwei Chen ^a^,^b^,^c
, Xiong Li ^a^,^b^,^c
, Qiong He ^a^,^b
, Tongtong Kang ^a^,^b^,^d
, Xiaoliang Ma ^a^,^b^,^c
, Yuan Ke ^e
, Xiangang Luo ^a^,^b^,^c^,^d^,^*

Author information +

History +

Received	Accepted	Published
2022-12-20	2023-07-17	2024-04-01
Issue Date	Revised Date
2024-06-12	2023-04-03

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Abstract

Wide-angle imaging and spectral detection play vital roles in tasks such as target tracking, object classification, and anti-camouflage. However, limited by their intrinsically different architectures, as determined by frequency dispersion requirements, their simultaneous implementation in a shared-aperture system is difficult. Here, we propose a novel concept to realize reconfigurable dual-mode detection based on electrical-control tunable metasurfaces. As a proof-of-concept demonstration, the simultaneous implementation of wide-angle imaging and polarization-spectral detection in a miniature shared-aperture meta-optical system is realized for the first time via the electrical control of cascaded catenary-like metasurfaces. The proposed system supports the imaging (spectral) resolution of approximately 27.8 line-pairs per millimeter (lp·mm⁻¹; ∼80 nm) for an imaging (spectral) mode from 8 to 14 μm. This system also bears a large field of view of about 70°, enabling multi-target recognition in both modes. This work may promote the miniaturization of multifunctional optical systems, including spectrometers and polarization imagers, and illustrates the potential industrial applications of meta-optics in biomedicine, security, space exploration, and more.

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Keywords

Metasurfaces / Reconfigurable / Imaging / Spectral

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Fei Zhang, Minghao Liao, Mingbo Pu, Yinghui Guo, Lianwei Chen, Xiong Li, Qiong He, Tongtong Kang, Xiaoliang Ma, Yuan Ke, Xiangang Luo, , , , , , , , , , , . A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection. Engineering, 2024, 35(4): 69-75 DOI:10.1016/j.eng.2023.07.008