2021/01/26 by Loubnan Abou-Hamdan, Claire Li, Riad Haïdar +4
Engineering · Materials Science · Physics and Astronomy · #Antenna (radio) #Atomic physics #Dimer #Excited state #Materials science #Metamaterials and Metasurfaces Applications #Near and far field #Nuclear magnetic resonance #Optics #Optoelectronics #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Telecommunications #Thermal Radiation and Cooling Technologies #physics.optics
paper · pdf · doi:10.1364/ol.413382
published as Optics Letters 46(5) 981-984 (2021)
openalex publication_date 2021/01/26 · arxiv created 2021/03/13 · arxiv updated 2021/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
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 anti-bonding modes can be observed simultaneously. We study the latter within a plasmon hybridization model, and analyze their effect on the far-field response.