Polarization-dependent near-field coupling and far-field harmonic modulation in a graphene-based plasmonic nanostructure

IF 2.6 3区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Physica Scripta Pub Date : 2024-09-17 DOI:10.1088/1402-4896/ad78ca
Ye Ming Qing, Zhaoyan Yang, Yunxia Wang, Yongze Ren and Jun Wu
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Abstract

The interplay between light and matter has fostered innovative research in surface plasmons, specifically in graphene, due to its tunable Fermi energy and reduced losses in the infrared and terahertz spectra. This study explores the anisotropic coupling of nonlocalized surface plasmons in graphene with localized magnetic polaritons (MP) in a silicon carbide (SiC) array. By adjusting graphene’s Fermi energy and polarization angle, we successfully achieved hybrid coupling, giving rise to three clearly distinguishable hybridized states. Using the coupled oscillator model as a framework, we conducted an analysis of the intricate multimode coupling and accurately ascertained the weighting efficiencies of the individual modes comprising the hybrids. By integrating the design principles of space-time coding metasurfaces, we successfully broadened the scope of the application, extending its reach from the near-field to the far-field. These novel discoveries pave new paths for advancements in thermal emitters, photonic systems, energy conversion technologies, and the creation of cutting-edge plasmonic devices.
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石墨烯基等离子纳米结构中的偏振相关近场耦合和远场谐波调制
光与物质之间的相互作用促进了对表面质子的创新研究,特别是石墨烯,因为石墨烯具有可调费米能并能减少红外和太赫兹光谱中的损耗。本研究探讨了石墨烯中的非局域表面质子与碳化硅(SiC)阵列中的局域磁极子(MP)的各向异性耦合。通过调整石墨烯的费米能和极化角,我们成功地实现了混合耦合,产生了三种明显不同的混合态。我们以耦合振荡器模型为框架,对错综复杂的多模耦合进行了分析,并准确地确定了构成混合态的各个模式的加权效率。通过整合时空编码元表面的设计原理,我们成功地拓宽了应用范围,将其覆盖范围从近场扩展到远场。这些新发现为热发射器、光子系统、能量转换技术以及尖端等离子体设备的开发铺平了新的道路。
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来源期刊
Physica Scripta
Physica Scripta 物理-物理:综合
CiteScore
3.70
自引率
3.40%
发文量
782
审稿时长
4.5 months
期刊介绍: Physica Scripta is an international journal for original research in any branch of experimental and theoretical physics. Articles will be considered in any of the following topics, and interdisciplinary topics involving physics are also welcomed: -Atomic, molecular and optical physics- Plasma physics- Condensed matter physics- Mathematical physics- Astrophysics- High energy physics- Nuclear physics- Nonlinear physics. The journal aims to increase the visibility and accessibility of research to the wider physical sciences community. Articles on topics of broad interest are encouraged and submissions in more specialist fields should endeavour to include reference to the wider context of their research in the introduction.
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