Coupling between subwavelength nano-slits lattice modes and metal-insulator-graphene cavity modes: A semi-analytical model
| Autor: | Edee, Kofi, Benrhouma, Maha, Antezza, Mauro, Fan, Jonathan Albert, Guizal, Brahim |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | OSA Continuum Vol. 2, Issue 4, pp. 1296-1309 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OSAC.2.001296 |
| Popis: | We present a semi-analytical model of the resonance phenomena occurring in a hybrid system made of a 1D array of periodic subwavelength slits deposited on an insulator/graphene layer. We show that the spectral response of this hybrid system can be fully explained by a simple semi-analytical model based on a weak and strong couplings between two elementary sub-systems. The first elementary sub-system consists of a 1D array of periodic subwavelength slits viewed as a homogeneous medium. In this medium lives a metal-insulator-metal lattice mode interacting with surface and cavity plasmon modes. A weak coupling with surface plasmon modes on both faces of the perforated metal film leads to a broadband spectrum while a strong coupling between this first sub-system and a second one made of a graphene-insulator-metal gap leads to a narrow band spectrum. We provide a semi-analytical model based on these two interactions allowing to efficiently access the full spectrum of the hybrid system. Comment: 14 pages, OSA Continuum (accepted, in press) |
| Databáze: | arXiv |
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