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dc.contributor.author
Passarelli, Nicolás

dc.contributor.author
Bustos Marun, Raul Alberto

dc.contributor.author
Coronado, Eduardo A.

dc.date.available
2018-10-05T19:24:48Z
dc.date.issued
2016-10-04
dc.identifier.citation
Passarelli, Nicolás; Bustos Marun, Raul Alberto; Coronado, Eduardo A.; Spaser and optical amplification conditions in gold-coated active nanoparticles; American Chemical Society; Journal of Physical Chemistry C; 120; 43; 4-10-2016; 24941-24949
dc.identifier.issn
1932-7447
dc.identifier.uri
http://hdl.handle.net/11336/61817
dc.description.abstract
Due to their many potential applications, there is an increasing interest in studying hybrid systems composed of optically active media and plasmonic metamaterials. In this work we focus on a particular system which consists of an optically active silica core covered by a gold shell. We find that the spaser (surface plasmon amplification by stimulated emission of radiation) conditions can be found at the poles of the scattering cross section of the system, a result that remains valid beyond the geometry studied. We explored a wide range of parameters that cover most of the usual experimental conditions in terms of the geometry of the system and the wavelength of excitation. We show that the conditions of spaser generation necessarily require full loss compensation, but the opposite is not necessarily true. Our results, which are independent of the detailed response of the active medium, provide the gain needed and the wavelength of the spasers that can be produced by a particular geometry, discussing also the possibility of turning the system into optical amplifiers and surface enhanced Raman spectroscopy substrates with huge enhancements. We believe that our results can find numerous applications. In particular, they can be useful for experimentalists studying similar systems in both tuning the experimental conditions and interpreting the results. (Figure Presented).
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Plasmonic
dc.subject
Optically Active Materials
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Spaser
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Core-Shell Nanoparticles
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Astronomía

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Ciencias Físicas

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CIENCIAS NATURALES Y EXACTAS

dc.title
Spaser and optical amplification conditions in gold-coated active nanoparticles
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-10T15:48:09Z
dc.identifier.eissn
1932-7455
dc.journal.volume
120
dc.journal.number
43
dc.journal.pagination
24941-24949
dc.journal.pais
Estados Unidos

dc.journal.ciudad
Washington
dc.description.fil
Fil: Passarelli, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Bustos Marun, Raul Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
dc.description.fil
Fil: Coronado, Eduardo A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.journal.title
Journal of Physical Chemistry C

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpcc.6b05240
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.jpcc.6b05240
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