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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/19378
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dc.contributor.authorHohenau, Andreas-
dc.contributor.authorGarcía-Vidal, F. J.-
dc.contributor.authorRodrigo, Sergio G.-
dc.contributor.authorMartín-Moreno, Luis-
dc.date.accessioned2009-12-04T14:38:09Z-
dc.date.available2009-12-04T14:38:09Z-
dc.date.issued2007-02-
dc.identifier.citationPhysical Review B 75(8): 085104.1-085104.8 (2007)en_US
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10261/19378-
dc.description8 pages, 9 figures.-- PACS number(s): 42.65. k, 73.20.Mf, 02.70.Bf.-- et al.en_US
dc.description.abstractRegular arrays of rectangular gold nanoparticles placed on gold films are characterized by using linear reflection spectroscopy (in the wavelength range of 450–950 nm) and nonlinear scanning optical microscopy, in which two-photon photoluminescence (TPL) excited with a strongly focused laser beam (in the wavelength range of 730–820 nm) is detected. Experimental results are modeled using a finite-difference time-domain approach with the dielectric function of gold approximated by a Drude-Lorentz formula, showing a rather good agreement between the experimental and theoretical reflection and TPL enhancement spectra. The modeling is also used to optimize the array parameters for achieving strong and well-pronounced TPL enhancement maxima in the wavelength range accessible to the used experimental techniques, i.e., close to 800 nm. Accordingly designed samples are fabricated and characterized, corroborating the modeling predictions. We discuss the origin of TPL enhancement and its relation to local-field enhancements at the sample surface as well as its characterization with TPL microscopy. The implications of the obtained results are also discussed.en_US
dc.description.sponsorshipThe authors acknowledge support from the European Network of Excellence, Plasmo-Nano-Devices (FP6-2002-IST- 1-507879 , the STREP “Surface Plasmon Photonics” FP6- NMP4-CT-2003-505699) the NABIIT project (Contact No. 2106-05-033 from the Danish Research Agency) and the Spanish Ministry of Education and Science (Grant No. MAT2005-06608-C02).en_US
dc.format.extent259768 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsopenAccessen_US
dc.subjectGolden_US
dc.subjectNanoparticlesen_US
dc.subjectReflectivityen_US
dc.subjectScanning probe microscopyen_US
dc.subjectPhotoluminescenceen_US
dc.subjectTwo-photon spectraen_US
dc.titleSpectroscopy and nonlinear microscopy of gold nanoparticle arrays on gold filmsen_US
dc.typeartículoen_US
dc.identifier.doi10.1103/PhysRevB.75.085104-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevB.75.085104en_US
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.cerifentitytypePublications-
item.openairetypeartículo-
item.languageiso639-1en-
item.grantfulltextopen-
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