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arXiv 2103.07760physics.optics
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单热激励非对称二聚体天线中的混合模

Hybrid modes in a single thermally excited asymmetric dimer antenna

Loubnan Abou-Hamdan, Claire Li, Riad Haidar, Valentina Krachmalnicoff, Patrick Bouchon, Yannick De Wilde

摘要:

相邻天线的单个二聚体中的混合模式的研究是优化大规模超颖表面或由亚波长构建块组成的任何复杂天线结构的远场电磁(EM)响应的重要步骤。在这里,我们提出了远场红外空间调制光谱(IR-SMS)测量的一个单一的热激发的非对称二聚体的方形金属-绝缘体-金属(MIM)天线由纳米间隙分开。通过热涨落,天线的所有电磁模式被激发,并且可以同时观察到混合成键模式和反键模式。我们研究后者内的等离子体杂交模型,并分析其对远场响应的影响。

英文摘要:

The study of hybrid modes in a single dimer of neighboring antennas is an essential step to optimize the far-field electromagnetic (EM) response of large-scale metasurfaces or any complex antenna structure made up of subwavelength building blocks. Here we present far-field infrared spatial modulation spectroscopy (IR-SMS) measurements of a single thermally excited asymmetric dimer of square metal-insulator-metal (MIM) antennas separated by a nanometric gap. Through thermal fluctuations, all the EM modes of the antennas are excited and hybrid bonding and antibonding modes can be observed simultaneously. We study the latter within a plasmon hybridization model, and analyse their effect on the far-field response.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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