White light generation by frequency upconversion in Tm3+∕Ho3+∕Yb3+-codoped fluorolead germanate glass

White light generation by frequency upconversion in Tm3+∕Ho3+∕Yb3+-codoped fluorolead germanate glass

White light was produced exploiting an additive synthesis of red, green, and blue fluorescence through frequency upconversion in fluorolead-germanate glass codoped with Ho3+, Tm3+, and Yb3+. The 475, 540, and 650nm signals were, respectively, assigned to thulium (G41-H63) and holmium (S25;F45)→I85 a...

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Veröffentlicht in:Applied physics letters 2007-08, Vol.91 (9)
Hauptverfasser: Gouveia-Neto, A. S., Bueno, L. A., do Nascimento, R. F., da Silva, E. A., da Costa, E. B., do Nascimento, V. B.
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container_issue 9
container_start_page
container_title Applied physics letters
container_volume 91
creator Gouveia-Neto, A. S.
Bueno, L. A.
do Nascimento, R. F.
da Silva, E. A.
da Costa, E. B.
do Nascimento, V. B.
description White light was produced exploiting an additive synthesis of red, green, and blue fluorescence through frequency upconversion in fluorolead-germanate glass codoped with Ho3+, Tm3+, and Yb3+. The 475, 540, and 650nm signals were, respectively, assigned to thulium (G41-H63) and holmium (S25;F45)→I85 and F55→I85, excited via energy tranfer from ytterbium. The dopant concentrations were adjusted, yielding the emission of a wide color gamut in the visible spectrum and the production of white light using excitation at 975nm. The spectral positions and purity (blue, 97%; green, 100%; red, 95%) of the three colors produced CIE-X=0.3438 and CIE-Y=0.3639 coordinates.
doi_str_mv 10.1063/1.2775043
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title White light generation by frequency upconversion in Tm3+∕Ho3+∕Yb3+-codoped fluorolead germanate glass
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