一种基于偏振相关介电超表面的光谱重构方法及相关装置

By employing a spectral reconstruction method based on polarization-dependent dielectric metasurfaces, and utilizing a spectral reconstruction device with a calcium fluoride substrate and silicon nanowire array structure, adjusting the metaatomic array parameters and combining it with compressed sensing algorithms, the problem of low cost and high precision in mid-infrared spectral reconstruction was solved, achieving high-resolution spectral reconstruction results.

CN121275144BActive Publication Date: 2026-07-17JINAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JINAN UNIVERSITY
Filing Date
2025-10-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the spectral reconstruction method in the mid-infrared band cannot simultaneously meet the requirements of low cost and high reconstruction accuracy. Traditional spectrometers are large and expensive, computational spectrometers have limited modulation freedom, and spectral resolution and bandwidth are limited by the number of detectors.

Method used

A spectral reconstruction method based on polarization-correlated dielectric metasurfaces is adopted. By utilizing a periodically arranged silicon nanowire array structure on a calcium fluoride substrate and adjusting the structural parameters of the metaatomic array, rich, complex, and low-correlation transmission spectrum data are obtained. The incident spectrum is then reconstructed by combining compressed sensing and dictionary learning algorithms.

Benefits of technology

It achieves high-precision spectral reconstruction under low-cost conditions, significantly improves the spectral reconstruction effect, reduces system design costs while maintaining high resolution, and can accurately reconstruct the absorption spectrum of carbon dioxide gas with a fidelity of up to 98.75%.

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Abstract

本申请涉及光谱技术领域，尤其涉及一种基于偏振相关介电超表面的光谱重构方法及相关装置。所述方法包括：选定入射光信号，并将入射光信号透射过各个超原子阵列，得到透射谱数据；满足预设要求的透射谱数据作为目标透射谱数据；获取入射光信号透射过各个超原子阵列后得到的光强探测值；根据目标透射谱数据和所述光强探测值建立重构问题，并求解重构问题，得到入射光谱的最优解，将最优解作为入射光谱的重构光谱。本申请无需利用体积庞大且成本较高的光谱仪，即可得到高重构精度的入射光谱，只需简单调整超原子阵列的结构参数，即可获得丰富、复杂、低相关性的宽带光谱响应，显著改善光谱重构，在保持高分辨率的前提下有效减少了系统设计成本。
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Citation Information

Patent Citations

  • Polarization spectrum measuring method and system and application thereof

    CN116858382A

  • Intermediate infrared spectrum analysis system and method based on metasurface calculation reconstruction

    CN116858797A