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The paper presents energy transfer in tellurite glass from the system TeO2 - GeO2 - PbO - PbF2- BaO - Nb2O5 -
LaF3 doped with Yb3+/Tm3+ ions. Under the excitation of 976 nm laser a strong blue emission (477 nm)
corresponding to the transition 1G4 → 3H6 in thulium ions was observed. Analysing the influence of the content of
Tm3+ ions on the level of luminescence obtained by the mechanism of upconversion it was established that the most
effective energy transfer between Yb 3+→ Tm3+ ions took place in the matrix doped in the following proportion:
1 Yb3+:0.1 Tm3+ (%mol). Based on the non-resonant process of energy transfer between Yb3+ and Tm3+ ions the
mechanism of upconversion was discussed.
J. Żmojda,D. Dorosz,M. Kochanowicz, andJ. Dorosz
"Upconversion energy transfer in Yb3+/Tm3+ doped tellurite glass", Proc. SPIE 8010, Optical Fibers and Their Applications 2011, 80100M (10 June 2011); https://doi.org/10.1117/12.896104
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J. Żmojda, D. Dorosz, M. Kochanowicz, J. Dorosz, "Upconversion energy transfer in Yb3+/Tm3+ doped tellurite glass," Proc. SPIE 8010, Optical Fibers and Their Applications 2011, 80100M (10 June 2011); https://doi.org/10.1117/12.896104