Interplay of surface plasmon and Fabry-Perot resonances in metallic hole arrays on dielectric layers

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Current Applied Physics Pub Date : 2024-11-13 DOI:10.1016/j.cap.2024.11.006

J. Jeon , H.J. Kim , B.S. Chun , S.J. Lee

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Abstract

This study investigates the resonant behavior of a nanostructured absorber consisting of a metal hole array (MHA) on a dielectric layer (BCB) forming a cavity on a metal ground plane (MGP). By varying the thickness of the BCB layer, the resonance spectra were analyzed under different conditions. Our simulations reveal the intricate interplay between surface plasmon and Fabry-Perot resonances within the MHA-BCB-MGP structure. We observe that as the dielectric thickness changes, the resonance peaks shift, exhibiting phenomena such as Rabi splitting and bifurcation. These features are particularly pronounced under transverse magnetic polarization, indicating the complex interaction between different resonance modes and polarization states. In addition, changes in MHA diameter affected the dominance of either surface plasmon or Fabry-Perot resonances, illustrating the complex relationship between structure and resonance behavior. Reflection spectra under different polarizations and angles of incidence showed agreement between simulation and experiment, validating the proposed model.

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介电层上金属孔阵列中表面等离子体与法布里-珀罗共振的相互作用

本研究探讨了纳米结构吸收器的共振行为，该吸收器由介质层（BCB）上的金属孔阵列（MHA）组成，在金属地平面（MGP）上形成一个空腔。通过改变 BCB 层的厚度，我们分析了不同条件下的共振频谱。我们的模拟揭示了 MHA-BCB-MGP 结构中表面等离子体和法布里-珀罗共振之间错综复杂的相互作用。我们观察到，随着电介质厚度的变化，共振峰也会发生变化，表现出拉比分裂和分叉等现象。这些特征在横向磁极化条件下尤为明显，表明不同共振模式和极化态之间存在复杂的相互作用。此外，MHA 直径的变化会影响表面等离子体或法布里-珀罗共振的主导地位，这说明了结构与共振行为之间的复杂关系。不同偏振和入射角下的反射光谱显示模拟与实验结果一致，验证了所提出的模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.