一种多层堆叠周期结构的光场注入计算方法及系统

By using an equivalent model and a surface plasmon resonance light field injection method, the problem of deep-level detection in optical detection of multi-layered opaque stacked structures was solved, achieving efficient and rapid light field penetration and simplifying the simulation process.

CN119132465BActive Publication Date: 2026-07-17HUAZHONG UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Filing Date
2024-08-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional optical detection methods struggle to achieve deeper feature detection in multi-layered, opaque stacked structures and suffer from low detection efficiency.

Method used

By employing an anisotropic and homogeneous dielectric equivalent multilayer stacked structure and utilizing the surface plasmon resonance optical field injection method, electromagnetic simulations are performed by calculating the minimum wavelength and equivalent model to optimize the optical field penetration depth. The dielectric constant is calculated by combining the Lorentz-Drude model and the Maxwell-Garnet approximation theory to achieve deep penetration of the optical field.

Benefits of technology

It improves optical detection efficiency, breaks the skin limit of metals, realizes non-destructive and non-contact light field penetration, simplifies simulation calculation time, and improves detection efficiency.

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Abstract

本发明属于半导体材料相关技术领域,并公开了一种多层堆叠周期结构的光场注入计算方法及系统。该方法包括:构建待测的金属‑电介质多层堆叠周期结构的三维几何模型;计算三维几何模型激发表面等离子共振时需满足的最小波长;采用各向异性的均匀介质等效所述三维几何模型中的不同材料组合,获得三维几何模型对应的等效模型;采用不同波长的入射光对该等效模型进行电磁学仿真,获得在发生等离子体共振后入射光能渗透进等效模型时对应的共振波长;利用该波长的入射光再次进行电磁学仿真,获得该等效模型横截面的光场分布,即为待测的金属‑电介质多层堆叠周期结构横截面的光场分布。通过本发明,快速,完整、准确地表达出堆叠周期结构的光学特性。
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