Visible and near infra-red up-conversion in Tm3+/Yb3+ co-doped silica fibres under 980 nm excitation

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dc.creatorSimpson, David A.
dc.creatorGibbs, Keith W. E.
dc.creatorCollins, Stephen F.
dc.creatorBlanc, Wilfried
dc.creatorDussardier, Bernard
dc.creatorMonnom, Gérard
dc.creatorPeterka, Pavel
dc.creatorBaxter, Gregory W.
dc.date2008-09-01
dc.date.accessioned2026-07-07T09:59:45Z
dc.date.available2026-07-07T09:59:45Z
dc.descriptionThe spectroscopic properties of Tm3+/Yb3+ co-doped silica fibers under excitation at 980 nm are reported. Three distinct up-conversion fluorescence bands were observed in the visible to near infra-red regions. The blue and red fluorescence bands at 475 and 650 nm, respectively, were found to originate from the 1G4 level of Tm3+. A three step up-conversion process was established as the populating mechanism for these fluorescence bands. The fluorescence band at 800 nm was found to originate from two possible transitions in Tm3+; one being the transition from the 3H4 to 3H6 manifold which was found to dominate at low pump powers; the other being the transition from the 1G4 to 3H6 level which dominates at higher pump powers. The fluorescence lifetime of the 3H4 and 3F4 levels of Tm3+ and 2F5/2 level of Yb3+ were studied as a function of Yb3+ concentration, with no significant energy back transfer from Tm3+ to Yb3+ observed.
dc.identifierhttps://arxiv.org/abs/0809.0229
dc.identifierhttp://arxiv.org/abs/0809.0229
dc.identifierOptics express 16, 18 (2008) 13781-13799
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/168133
dc.subjectOptics
dc.titleVisible and near infra-red up-conversion in Tm3+/Yb3+ co-doped silica fibres under 980 nm excitation
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