Publication:
Plasmonic enhancement of Rhodamine dye random lasers

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dc.citedby7
dc.contributor.affiliationsFaculty of Science and Technology
dc.contributor.affiliationsMacquarie University
dc.contributor.affiliationsARC Centre of Excellence Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS)
dc.contributor.affiliationsUniversiti Sains Islam Malaysia (USIM)
dc.contributor.authorIsmail W.Z.W.en_US
dc.contributor.authorVo T.P.en_US
dc.contributor.authorGoldys E.M.en_US
dc.contributor.authorDawes J.M.en_US
dc.date.accessioned2024-05-28T08:24:49Z
dc.date.available2024-05-28T08:24:49Z
dc.date.issued2015
dc.description.abstractWe demonstrate improved characteristics in Rhodamine dye random lasers with the addition of gold nanoparticles. As a result of the strong plasmonic enhancement induced by gold nanoparticles, Rhodamine 640/gold random lasers have less than half the lasing threshold compared with Rhodamine 640/alumina random lasers in the weakly scattering regime for 10-3 M dye concentration. The optimum concentration of gold nanoparticles occurs at ?8 � 1010 cm-3, close to the transition between the weakly scattering and diffusive regimes. Rhodamine 640 has a better performance compared with Rhodamine 6G which is attributed to the greater spectral overlap of the Rhodamine 6G fluorescence spectrum with the plasmon resonance of gold, leading to an increased energy transfer and fluorescence quenching for Rhodamine 6G by gold. We also observe the contrasting trends of lasing threshold between random dye lasers incorporating dielectric and metal nanoparticles in the diffusive scattering regime. The effects of gold nanoparticles in random dye lasers are discussed in the context of the tradeoff between local field enhancement and fluorescence quenching. � 2015 Astro Ltd.
dc.description.natureFinalen_US
dc.identifier.ArtNo85001
dc.identifier.doi10.1088/1054-660X/25/8/085001
dc.identifier.issn1054660X
dc.identifier.issue8
dc.identifier.scopus2-s2.0-84938408703
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84938408703&doi=10.1088%2f1054-660X%2f25%2f8%2f085001&partnerID=40&md5=d09f8ff64a6b9b7ed01b0748dcd5047d
dc.identifier.urihttps://oarep.usim.edu.my/handle/123456789/8568
dc.identifier.volume25
dc.languageEnglish
dc.language.isoen_US
dc.publisherInstitute of Physics Publishingen_US
dc.relation.ispartofLaser Physics
dc.sourceScopus
dc.subjectplasmonicsen_US
dc.subjectrandom dye lasersen_US
dc.subjectspectral overlap and lasing thresholden_US
dc.subjectDye lasersen_US
dc.subjectEnergy transferen_US
dc.subjectFiber optic sensorsen_US
dc.subjectFluorescenceen_US
dc.subjectGolden_US
dc.subjectLaser beamsen_US
dc.subjectNanoparticlesen_US
dc.subjectPlasmonsen_US
dc.subjectQuenchingen_US
dc.subjectDiffusive scatteringen_US
dc.subjectFluorescence quenchingen_US
dc.subjectFluorescence spectraen_US
dc.subjectLasing thresholden_US
dc.subjectLocal field enhancementen_US
dc.subjectOptimum concentrationen_US
dc.subjectPlasmon resonancesen_US
dc.subjectPlasmonicsen_US
dc.titlePlasmonic enhancement of Rhodamine dye random lasers
dc.typeArticleen_US
dspace.entity.typePublication

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