White Upconversion in Yb3+/Tm3+/Ho3+ Co-Doped Antimony-Germanate Glasses |
| J. Żmojda, D. Dorosz, M. Kochanowicz, P. Miluski and J. Dorosz
Department of Optoelectronics and Lighting Technology, Białystok University of Technology, Wiejska 45, 15-351 Białystok |
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| In the paper the spectroscopic properties of antimony-germanate glass co-doped with Yb3+/Ho3+ has been investigated. Fabricated Yb3+/Tm3+/Ho3+ co-doped glass is characterised by the emission of simultaneous multicolour upconversion: luminescence. Strong blue 1G4 → 3H6 (Tm3+), green 5F4 → 5I8 (Ho3+) and red 5F5 → 5I8 (Ho3+) upconversion emission bands have been measured under 976 nm excitation at room temperature. Influence of molar ratio of active ions and excitation power on the colour coordinates (CIE-1931) have been investigated. |
DOI: 10.12693/APhysPolA.124.598 PACS numbers: 42.81.-i, 42.79.Ag, 33.20.Kf, 42.25.Bs |