Electrodynamic resonance of surface conduction and THz transmission through arrays of rectangular apertures in opaque metallic thin films
| Autor: | Christophe Minot, Edmond Cambril, Frédéric Garet, Jean-Louis Coutaz, Christophe Dupuis |
|---|---|
| Přispěvatelé: | Centre de Nanosciences et de Nanotechnologies [Marcoussis] (C2N), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), Laboratoire de Microstructures et de Microélectronique (L2M), Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation (IMEP-LAHC ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Materials science Admittance Guided-mode resonance business.industry Surface plasmon Physics::Optics Resonance 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics symbols.namesake Optics 0103 physical sciences Transmittance symbols [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Computer Vision and Pattern Recognition Thin film Rayleigh scattering business ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of the Optical Society of America. A Optics, Image Science, and Vision Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2019, 36 (6), pp.964. ⟨10.1364/JOSAA.36.000964⟩ |
| ISSN: | 1520-8532 1084-7529 |
| DOI: | 10.1364/JOSAA.36.000964⟩ |
| Popis: | A modal method is developed analytically to investigate the THz optical transmission and reflection of a metallic thin film perforated by a 2D array of rectangular apertures. For subwavelength apertures, this optical model is interpreted in terms of passive electrical circuits, with interface admittances accounting for the THz surface conduction properties of the metallic film. The reactive component of the admittance of the evanescent diffraction cloud is shown to exhibit resonant behavior governed by the shape factors of the array. Interaction of such an electrodynamic resonance with the Rayleigh diffraction orders may alter their standard Fano profiles. Experimental evidence of the resonance is obtained owing to lineshape analysis of transmittance measurements in the THz range on metallic thin films deposited on a dielectric substrate, both above and below the first Wood-Rayleigh anomaly. |
| Databáze: | OpenAIRE |
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