Absorption leads to narrower plasmonic resonances

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dc.contributor.authorPeck, Ryan L.
dc.contributor.authorBrolo, Alexandre G.
dc.contributor.authorGordon, Reuven
dc.date.accessioned2023-04-27T21:08:36Z
dc.date.available2023-04-27T21:08:36Z
dc.date.copyright2019en_US
dc.date.issued2019-01-11
dc.description.abstractWhile it is generally accepted that adding loss dampens and broadens plasmonic resonances, here we find adding losses can actually narrow the linewidth and increase the resonance peak. We show that the scattering cross section of a metal nanoparticle in a lossy dielectric medium is 1 order of magnitude larger than the same nanoparticle in a lossless dielectric. The full width at half-maximum of the scattering spectrum is a quarter of that of the non-absorbing medium. The peak narrowing and increased scattering have benefits for biomarkers where high scattering efficiency and narrow linewidths (for denser multiplexing) are desired. The enhanced scattering and absorption in the surrounding lossy medium are also beneficial for photovoltaic applications.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work is supported by the NSERC (Canada) CREATE Materials for Enhanced Energy Technologies (MEET) program and the NSERC Discovery Grants program.en_US
dc.identifier.citationR. Peck, A. Brolo, and R. Gordon (2019), "Absorption leads to narrower plasmonic resonances," Journal of the Optical Society of America B 36, F117-F122 (2019). https://doi.org/10.1364/JOSAB.36.00F117en_US
dc.identifier.urihttps://doi.org/10.1364/JOSAB.36.00F117
dc.identifier.urihttp://hdl.handle.net/1828/15012
dc.language.isoenen_US
dc.publisherJournal of the Optical Society of America Ben_US
dc.subjectNanoplasmonics
dc.subjectNumerical simulation
dc.subjectScattering
dc.subjectScattering theory
dc.subjectSurface enhanced Raman scattering
dc.subjectSurface plasmon resonance
dc.subjectCentre for Advanced Materials and Related Technology (CAMTEC)
dc.subject.departmentDepartment of Electrical and Computer Engineering
dc.subject.departmentDepartment of Physics
dc.subject.departmentDepartment of Chemistry
dc.titleAbsorption leads to narrower plasmonic resonancesen_US
dc.typePostprinten_US

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