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Intense upconversion luminescence and origin study in Tm3+/Yb3+ codoped calcium scandate
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10.1063/1.4753802
/content/aip/journal/apl/101/12/10.1063/1.4753802
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/12/10.1063/1.4753802

Figures

Image of FIG. 1.
FIG. 1.

UCL spectra of 0.004Tm3+/0.1Yb3+ codoped CaSc2O4 and Y2O3 pumped by a 980 nm LD with a low pump density of 7 mW/mm2. The emission band near 540 nm (labelled by the asterisk) is from a trace impurity of Ho3+. Inset shows the energy level diagrams and the energy transfer pathways.

Image of FIG. 2.
FIG. 2.

Infrared emission spectra of 0.1Yb3+ singly doped (a), and 0.004Tm3+ and 0.1Yb3+ codoped (b) CaSc2O4 and Y2O3 excited by a 980 nm LD.

Image of FIG. 3.
FIG. 3.

Decay curves of Yb3+:2F5/22F7/2 emissions at 1047 nm for the doped CaSc2O4 (a) and Y2O3 (b).

Image of FIG. 4.
FIG. 4.

Pump power dependences of emission intensities in CaSc2O4:0.004Tm3+/0.1Yb3+ under a 980 nm LD pump.

Tables

Generic image for table
Table I.

Intensities and lifetimes of Yb3+:2F5/22F7/2 emissions as well as parameters for Yb3+ absorption and Yb3+ → Tm3+ energy transfer in CaSc2O4 and Y2O3.

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/content/aip/journal/apl/101/12/10.1063/1.4753802
2012-09-18
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Intense upconversion luminescence and origin study in Tm3+/Yb3+ codoped calcium scandate
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/12/10.1063/1.4753802
10.1063/1.4753802
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