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Spectroscopic characteristics of Dy3+ doped Y3Al5O12 transparent ceramics
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Image of FIG. 1.
FIG. 1.

Part of the energy level scheme of Dy: YAG ceramic, showing the main visible emission lines.

Image of FIG. 2.
FIG. 2.

The 6H15/26H9/2, 6F11/2 absorption of Dy (5 at. %): YAG ceramic at (a) 10 K and (b) 300 K.

Image of FIG. 3.
FIG. 3.

Part of the visible-UV absorption of Dy3+ (5 at. %): YAG ceramic at 300 K (a) and the (6H15/24F9/2, 4I15/2, 4G11/2) absorption bands at 80 K (b) and 10 K (c).

Image of FIG. 4.
FIG. 4.

(a) The population (FTP) of the lowest (1) and highest (8) Stark levels of the 6H15/2 and normalized (to 10 K value) experimental peak intensities of 447.6 nm line and (b) the FTP of 4F9/2 Stark levels and the relative decreasing of 497 nm emission intensity.

Image of FIG. 5.
FIG. 5.

10 K visible emission of the Dy: YAG ceramic.

Image of FIG. 6.
FIG. 6.

Temperature dependence of the 4F9/26H13/2 emission of Dy: YAG ceramic: (a) 10 K, (b) 80 K, and (c) 300 K.


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Table I.

Stark energy levels of Dy3+: YAG ceramic.

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Table II.

Measured and calculated absorption line strengths of Dy3+ in YAG transparent ceramic at 300 K.

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Table III.

The J-O parameters for Dy3+ YAG ceramic and other crystalline garnets.

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Table IV.

Estimated fluorescence line strengths , radiative decay rates (AJJ′ ), and branching ratios (βJJ′ ) at 300 K for Dy: YAG.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spectroscopic characteristics of Dy3+ doped Y3Al5O12 transparent ceramics