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Extended emission wavelength of random dye lasers by exploiting radiative and non-radiative energy transfer

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dc.FundingDetailsMacquarie University DP140104458
dc.FundingDetailsWe acknowledge funding and support from the ARC Centre of Excellence Program, Centre for Ultrahigh-bandwidth Devices for Optical Systems, ARC DP140104458, an Australia Endeavour Award, and Macquarie University.
dc.citedby3
dc.contributor.affiliationsMacquarie University
dc.contributor.affiliationsARC Centre of Excellence for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS)
dc.contributor.affiliationsUniversiti Sains Islam Malaysia (USIM)
dc.contributor.authorWan Ismail W.Z.en_US
dc.contributor.authorGoldys E.M.en_US
dc.contributor.authorDawes J.M.en_US
dc.date.accessioned2024-05-28T08:25:57Z
dc.date.available2024-05-28T08:25:57Z
dc.date.issued2016
dc.description.abstractWe demonstrate long-wavelength operation (>700�nm) of random dye lasers (using a methylene blue dye) with the addition of rhodamine 6G and titania, enabled by radiative and non-radiative energy transfer. The pump energy is efficiently absorbed and transferred to the acceptors, to support lasing in random dye lasers in the near infrared. The optimum random laser performance with the highest emission intensity and the lowest lasing threshold was achieved for a concentration of methylene blue as the acceptor equal to 6� the concentration of rhodamine 6G (donor). Excessive levels of methylene blue increased the lasing threshold and broadened the methylene blue emission linewidth due to dye quenching from re-absorption. This is due to competition between the donor emission and energy transfer and between absorption loss and fluorescence quenching. The radiative and non-radiative energy transfer is analyzed as a function of the acceptor concentration and pump energy density, with consideration of the spectral overlap. The dependence of the radiative and non-radiative transfer efficiency on the acceptor concentration is obtained, and the energy transfer parameters, including the radiative and non-radiative energy transfer rate constants (KR and KNR), are investigated using Stern�Volmer analysis. The analysis indicates that radiative energy transfer is the dominant energy transfer mechanism in this system. � 2016, Springer-Verlag Berlin Heidelberg.
dc.description.natureFinalen_US
dc.identifier.ArtNo40
dc.identifier.CODENAPBOE
dc.identifier.doi10.1007/s00340-016-6321-3
dc.identifier.epage9
dc.identifier.issn9462171
dc.identifier.issue2
dc.identifier.scopus2-s2.0-84958761451
dc.identifier.spage1
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84958761451&doi=10.1007%2fs00340-016-6321-3&partnerID=40&md5=8e6015c867825357139810213291a4e9
dc.identifier.urihttps://oarep.usim.edu.my/handle/123456789/8695
dc.identifier.volume122
dc.languageEnglish
dc.language.isoen_USen_US
dc.publisherSpringer Verlagen_US
dc.relation.ispartofApplied Physics B: Lasers and Optics
dc.sourceScopus
dc.subjectAromatic compoundsen_US
dc.subjectDye lasersen_US
dc.subjectInfrared devicesen_US
dc.subjectOrganic polymersen_US
dc.subjectPumping (laser)en_US
dc.subjectQuenchingen_US
dc.subjectRate constantsen_US
dc.subjectAcceptor concentrationsen_US
dc.subjectEmission wavelengthen_US
dc.subjectEnergy transfer mechanismsen_US
dc.subjectEnergy transfer parametersen_US
dc.subjectFluorescence quenchingen_US
dc.subjectNonradiative energy transferen_US
dc.subjectRadiative energy transferen_US
dc.subjectTransfer efficiencyen_US
dc.subjectEnergy transferen_US
dc.titleExtended emission wavelength of random dye lasers by exploiting radiative and non-radiative energy transferen_US
dc.typeArticleen_US
dspace.entity.typePublication

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