Effect of Surface Plasmon Coupling to Optical Cavity Modes on the Field Enhancement and Spectral Response of Dimer-Based sensors

Handle URI:
http://hdl.handle.net/10754/625443
Title:
Effect of Surface Plasmon Coupling to Optical Cavity Modes on the Field Enhancement and Spectral Response of Dimer-Based sensors
Authors:
Alrasheed, Salma; Di Fabrizio, Enzo M. ( 0000-0001-5886-4678 )
Abstract:
We present a theoretical approach to narrow the plasmon linewidth and enhance the near-field intensity at a plasmonic dimer gap (hot spot) through coupling the electric localized surface plasmon (LSP) resonance of a silver hemispherical dimer with the resonant modes of a Fabry-Perot (FP) cavity. The strong coupling is demonstrated by the large anticrossing in the reflection spectra and a Rabi splitting of 76 meV. Up to 2-fold enhancement increase can be achieved compared to that without using the cavity. Such high field enhancement has potential applications in optics, including sensors and high resolution imaging devices. In addition, the resonance splitting allows for greater flexibility in using the same array at different wavelengths. We then further propose a practical design to realize such a device and include dimers of different shapes and materials.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Physical Sciences and Engineering (PSE) Division
Citation:
Alrasheed S, Di Fabrizio E (2017) Effect of Surface Plasmon Coupling to Optical Cavity Modes on the Field Enhancement and Spectral Response of Dimer-Based sensors. Scientific Reports 7. Available: http://dx.doi.org/10.1038/s41598-017-11140-0.
Publisher:
Springer Nature
Journal:
Scientific Reports
Issue Date:
5-Sep-2017
DOI:
10.1038/s41598-017-11140-0
Type:
Article
ISSN:
2045-2322
Sponsors:
We thank SMILEs lab members at King Abdullah University of Science and Technology for the fruitful discussions and suggestions. King Abdullah University of Science and Technology (OCRF-2014-CRG3-62140384).
Additional Links:
https://www.nature.com/articles/s41598-017-11140-0
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAlrasheed, Salmaen
dc.contributor.authorDi Fabrizio, Enzo M.en
dc.date.accessioned2017-09-11T08:41:31Z-
dc.date.available2017-09-11T08:41:31Z-
dc.date.issued2017-09-05en
dc.identifier.citationAlrasheed S, Di Fabrizio E (2017) Effect of Surface Plasmon Coupling to Optical Cavity Modes on the Field Enhancement and Spectral Response of Dimer-Based sensors. Scientific Reports 7. Available: http://dx.doi.org/10.1038/s41598-017-11140-0.en
dc.identifier.issn2045-2322en
dc.identifier.doi10.1038/s41598-017-11140-0en
dc.identifier.urihttp://hdl.handle.net/10754/625443-
dc.description.abstractWe present a theoretical approach to narrow the plasmon linewidth and enhance the near-field intensity at a plasmonic dimer gap (hot spot) through coupling the electric localized surface plasmon (LSP) resonance of a silver hemispherical dimer with the resonant modes of a Fabry-Perot (FP) cavity. The strong coupling is demonstrated by the large anticrossing in the reflection spectra and a Rabi splitting of 76 meV. Up to 2-fold enhancement increase can be achieved compared to that without using the cavity. Such high field enhancement has potential applications in optics, including sensors and high resolution imaging devices. In addition, the resonance splitting allows for greater flexibility in using the same array at different wavelengths. We then further propose a practical design to realize such a device and include dimers of different shapes and materials.en
dc.description.sponsorshipWe thank SMILEs lab members at King Abdullah University of Science and Technology for the fruitful discussions and suggestions. King Abdullah University of Science and Technology (OCRF-2014-CRG3-62140384).en
dc.publisherSpringer Natureen
dc.relation.urlhttps://www.nature.com/articles/s41598-017-11140-0en
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleEffect of Surface Plasmon Coupling to Optical Cavity Modes on the Field Enhancement and Spectral Response of Dimer-Based sensorsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalScientific Reportsen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorAlrasheed, Salmaen
kaust.authorDi Fabrizio, Enzo M.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.