Transmission resonances in plasmonic metallic gratings.
| dc.contributor.author | D’Aguanno, Giuseppe | |
| dc.contributor.author | Mattiucci, N. | |
| dc.contributor.author | Bloemer, M. J. | |
| dc.contributor.author | Ceglia, D. de | |
| dc.contributor.author | Vincenti, M. A. | |
| dc.contributor.author | Alù, A. | |
| dc.date.accessioned | 2020-06-03T16:25:00Z | |
| dc.date.available | 2020-06-03T16:25:00Z | |
| dc.date.issued | 2011-01-12 | |
| dc.description.abstract | Using the Fourier modal method (FMM) we report our analysis of the transmission resonances of a plasmonic grating with subwavelength period and extremely narrow slits for wavelengths of the incoming, transverse magnetic (TM)-polarized, radiation ranging from 240nm to 1500nm and incident angles from 0° to 90°. In particular, we study the case of a silver grating placed in vacuo. Consistent with previous studies on the topic, we highlight that the main mechanism for extraordinary transmission is a TM-Fabry-Perot (FP) branch supported by waveguide modes inside each slit. The TM-FP branch may also interact with surface plasmons (SPs) at the air/Ag interface through the reciprocal lattice vectors of the grating, for periods comparable with the incoming wavelength. When the TM-FP branch crosses an SP branch, a bandgap is formed along the line of the SP dispersion. The gap has a Fano-Feshbach resonance at the low frequency band edge and a ridge resonance with extremely long lifetime at the high frequency band edge. We discuss the nature of these dispersion features, and in particular we describe the ridge resonance in the framework of guided-mode resonances (GMRs). In addition, we elucidate the connection of the coupling between the TM-FP branch and SPs within the Rayleigh condition. We also study the peculiar characteristics of the field localization and the energy transport in two topical examples. | en_US |
| dc.description.sponsorship | We thank M. Scalora, N. Akozbek, and M. Buncick for helpful discussions. The work of G. D. and N. M has been partially supported by DARPA projects “Nonlinear Plasmonic Devices” and “TunableMetamaterials.”A.A.was partiallysupportedbyAEgis Technologies Group, Inc., with contract 41-STTR-UTX-0652. | en_US |
| dc.description.uri | https://www.osapublishing.org/josab/abstract.cfm?uri=josab-28-2-253 | en_US |
| dc.format.extent | 12 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m22sk6-ng1b | |
| dc.identifier.citation | G. D’Aguanno, N. Mattiucci, M. J. Bloemer, D. de Ceglia, M. A. Vincenti, and A. Alù, "Transmission resonances in plasmonic metallic gratings," J. Opt. Soc. Am. B 28, 253-264 (2011),https://doi.org/10.1364/JOSAB.28.000253 | en_US |
| dc.identifier.uri | https://doi.org/10.1364/JOSAB.28.000253 | |
| dc.identifier.uri | http://hdl.handle.net/11603/18809 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | OSA Publishing | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Computer Science and Electrical Engineering Department Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Transmission resonances in plasmonic metallic gratings. | en_US |
| dc.title.alternative | The nature of transmission resonances in plasmonic metallic gratings | |
| dc.type | Text | en_US |