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Near-infrared quantum cutting in OH free Nd3+-Yb3+ co-doped low-silica calcium aluminosilicate glasses
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10.1063/1.4812373
/content/aip/journal/jap/114/1/10.1063/1.4812373
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/1/10.1063/1.4812373
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Energy level diagram of the Nd and Yb ions and quantum cutting mechanism in LSCAS. Cross relaxation between Nd ions Nd: FI; N:II (CR), and cross relaxations between Nd and Yb ions Nd:FI; Yb: FF (CR) and Nd:DG; Yb:FF (CR) are depicted.

Image of FIG. 2.
FIG. 2.

Infrared photoluminescence spectra of 1NdYb ( = 0, 1, and 8 represented by solid, dashed, and dotted lines, respectively) LSCAS glasses. The inset shows the intensity at 1030 nm of the Yb emission (the black squares) via the CR process as a function of the concentration of Yb. The Nd peak intensity at 914 nm (red circles) as a function of the concentration of Yb is also shown. The excitation wavelength was λ = 514 nm, i.e., resonant with the Nd:G level. The solid lines are visual guides.

Image of FIG. 3.
FIG. 3.

Normalized infrared emission spectra in the range of 800–1500 nm for the 1Nd4Yb co-doped LSCAS glass after excitation at 325 nm and 514 nm, represented by the solid and dotted lines, respectively. The spectra were normalized at 1330 nm (FI). For comparison, the emission at 1330 nm was 50-fold multiplied. The inset shows the relative intensity at 1030 nm as a function of the Yb concentration, for both excitation wavelengths.

Image of FIG. 4.
FIG. 4.

Nd:FI luminescence decay curves for the 1NdYb ( = 0, 1, 2, 4, 6, and 8) LSCAS glasses detected at 914 nm after a resonant excitation with a pulsed laser (λ = 532 nm, 5 ns). The inset shows the decay times for the Nd:FI transition at 914 nm (the black squares) and the energy transfer efficiency between Nd:F and Yb:F levels (the red circles). The lines are visual guides.

Image of FIG. 5.
FIG. 5.

Kinetic response of Yb DC luminescence for the 1NdYb ( = 1, 2, 4, 6, and 8) co-doped LSCAS glasses detected at 1030 nm under excitation with a pulsed laser (λ = 532 nm, 5 ns). The inset shows the measured probability ( ) of the CR and CR processes. The calculated of the CR process was performed through the subtraction . In the inset, the solid lines are visual guides.

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/content/aip/journal/jap/114/1/10.1063/1.4812373
2013-07-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Near-infrared quantum cutting in OH− free Nd3+-Yb3+ co-doped low-silica calcium aluminosilicate glasses
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/1/10.1063/1.4812373
10.1063/1.4812373
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