We propose a robust equivalent circuit model for the accurate prediction of magnetic polariton (MP) resonances in SiC grooves. By considering the boundary effects and introducing a parasitic capacitance, the analytical results of the structural-dependent MP resonances are in good agreements with the numerical results calculated by finite difference time domain (FDTD) method. With the model, we further propose a MP absorber with a broad bandwidth successfully. We believe this robust circuit model offers us opportunities in the design of novel applications based on MPs such as filters, detectors, and coherent sources in the infrared fields.

中文翻译：

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SiC 凹槽中磁极化子的稳健等效电路模型

我们提出了一个稳健的等效电路模型，用于准确预测 SiC 凹槽中的磁极化 (MP) 共振。通过考虑边界效应并引入寄生电容，结构相关的 MP 共振的分析结果与通过有限差分时域 (FDTD) 方法计算的数值结果非常吻合。通过该模型，我们进一步成功地提出了具有宽带宽的 MP 吸收器。我们相信，这种强大的电路模型为我们设计基于 MP 的新型应用提供了机会，例如红外领域中的滤波器、探测器和相干源。