Imaging of THz Photonic Modes by Scattering Scanning Near-Field Optical Microscopy.

Autor: Thomas L; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Hannotte T; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Santos CN; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Walter B; Vmicro SAS, Villeneuve d'Ascq, 59650 France., Lavancier M; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Eliet S; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Faucher M; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Lampin JF; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France., Peretti R; Institut d'Electronique, de Microélectronique et de Nanotechnologie, CNRS, Univ. Lille, Villeneuve d'Ascq, 59652 France.
Jazyk: angličtina
Zdroj: ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2022 Jul 20; Vol. 14 (28), pp. 32608-32617. Date of Electronic Publication: 2022 Jul 08.
DOI: 10.1021/acsami.2c01871
Abstrakt: We investigated the near-field distribution associated to the photonic mode of terahertz photonic micro-resonators by scattering scanning near-field optical microscopy. Probing individual THz micro-resonators concentrating electric fields is important for high-sensitivity chemical and biochemical sensing and fundamental light-matter interactions studies at the nanoscale. We imaged both electric field concentration predicted by numerical simulations and unexpected patterns that deviate from intuitive assumptions. We propose a scenario based on the combination of the near-field with the far-field pattern of the probe/resonator ensemble that is in excellent agreement with the experimental data and propose an image analysis procedure to recover the near-field of such structures.
Databáze: MEDLINE
Externí odkaz: