Hybrid modes in a single thermally excited asymmetric dimer antenna
Optics
2021-03-16 v1
Abstract
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.
Keywords
Cite
@article{arxiv.2103.07760,
title = {Hybrid modes in a single thermally excited asymmetric dimer antenna},
author = {Loubnan Abou-Hamdan and Claire Li and Riad Haidar and Valentina Krachmalnicoff and Patrick Bouchon and Yannick De Wilde},
journal= {arXiv preprint arXiv:2103.07760},
year = {2021}
}