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dc.contributor.author
Cuevas, Mauro
dc.date.available
2020-02-20T19:18:32Z
dc.date.issued
2018-10
dc.identifier.citation
Cuevas, Mauro; Theoretical investigation of the spontaneous emission on graphene plasmonic antenna in THz regime; Academic Press Ltd - Elsevier Science Ltd; Superlattices And Microstructures; 122; 10-2018; 216-227
dc.identifier.issn
0749-6036
dc.identifier.uri
http://hdl.handle.net/11336/98163
dc.description.abstract
The present work deals with a theoretical research on the emission and radiation properties of a dipole emitter source close to a dimer graphene plasmonic antenna. Modification of the radiation and the quantum efficiencies resulting from varying the position of the emitter and the orientation of its dipole moment are calculated by using a rigorous electromagnetic method based on Green's second identity. Large enhancements in the emission and the radiation of the emitter occur due to the coupling with the antenna surface plasmons in the spectral region from ≈4 THz to ≈15 THz. Our results show that the radiation efficiency can be enhanced by four orders of magnitude and that the quantum efficiency reaches values close to 0.8 when the emission frequency coincides with one of the resonant dipolar frequencies. On the other hand, these quantities can be reduced in a great measure at a specific frequency for a given emitter location. We present calculations of the near–field distribution and the far field intensity which reveal the role of the plasmonic antenna resonance in the emitter enhanced radiation. We show that the spectral region where the radiation is enhanced can be chosen over a wide range by varying the chemical potential of graphene from 0.2eV to 1eV.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
42.25.FX
dc.subject
73.20.MF
dc.subject
78.68.+M
dc.subject
81.05.UE
dc.subject
GRAPHENE
dc.subject
SPONTANEOUS EMISSION
dc.subject
SURFACE PLASMON
dc.subject.classification
Óptica
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Theoretical investigation of the spontaneous emission on graphene plasmonic antenna in THz regime
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-18T16:15:58Z
dc.journal.volume
122
dc.journal.pagination
216-227
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Cuevas, Mauro. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Grupo de Electromagnetismo Aplicado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Belgrano. Facultad de Ingeniería; Argentina
dc.journal.title
Superlattices And Microstructures
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0749603618309960
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.spmi.2018.08.006
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