Nonlinear plasmonic behavior of nanohole arrays in thin gold films for imaging lipids

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSubramaniyam, Nagarajan
dc.contributor.authorShah, Ali
dc.contributor.authorDreser, Christoph
dc.contributor.authorIsomäki, Antti
dc.contributor.authorFleischer, Monika
dc.contributor.authorSopanen, Markku
dc.contributor.departmentDepartment of Electronics and Nanoengineering
dc.contributor.departmentUniversity of Tübingen
dc.contributor.departmentUniversity of Helsinki
dc.date.accessioned2018-06-29T12:49:49Z
dc.date.available2018-06-29T12:49:49Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2019-06-09
dc.date.issued2018-06-04
dc.description.abstractWe demonstrate linear and nonlinear plasmonic behaviors of periodic nanohole arrays in thin gold (Au) films with varying periodicities. As expected, the linear optical transmission spectra of the nanohole arrays show a red-shift of the resonance wavelength and Wood's anomaly with increasing hole spacing. The optical transmission and electric near-field intensity distribution of the nanohole arrays are simulated using the finite element method. The nonlinear plasmonic behavior of the nanohole arrays is studied by using picosecond pulsed excitation at near-infrared wavelengths. The characteristic nonlinear signals indicating two-photon excited luminescence (TPEL), sum frequency generation, second harmonic generation, and four-wave mixing (FWM) are observed. A maximum FWM/TPEL signal intensity ratio is achieved for nanohole arrays with a periodicity of 500 nm. Furthermore, the significant FWM signal intensity and contrast compared to the background were harnessed to demonstrate the ability of surface-enhanced coherent anti-Stokes Raman scattering to visualize low concentrations of lipids deposited on the nanohole array with a periodicity of 500 nm.en
dc.description.versionPeer revieweden
dc.format.extent5
dc.format.mimetypeapplication/pdf
dc.identifier.citationSubramaniyam , N , Shah , A , Dreser , C , Isomäki , A , Fleischer , M & Sopanen , M 2018 , ' Nonlinear plasmonic behavior of nanohole arrays in thin gold films for imaging lipids ' , Applied Physics Letters , vol. 112 , no. 23 , 233109 . https://doi.org/10.1063/1.5028118en
dc.identifier.doi10.1063/1.5028118
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.otherPURE UUID: c1507ffc-291a-46b7-9e55-1821893bfc8b
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/c1507ffc-291a-46b7-9e55-1821893bfc8b
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85048450027&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/26025192/ELEC_subramaniyam_et_al_Nonlinear_plasmonic_AIP.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/32615
dc.identifier.urnURN:NBN:fi:aalto-201806294025
dc.language.isoenen
dc.relation.ispartofseriesApplied Physics Lettersen
dc.relation.ispartofseriesVolume 112, issue 23en
dc.rightsopenAccessen
dc.titleNonlinear plasmonic behavior of nanohole arrays in thin gold films for imaging lipidsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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