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Efficient 2.0 μm emission in Nd3+/Ho3+ co-doped tungsten tellurite glasses for a diode-pump 2.0 μm laser
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10.1063/1.4803043
/content/aip/journal/jap/113/17/10.1063/1.4803043
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4803043

Figures

Image of FIG. 1.
FIG. 1.

The room absorption spectra of TWN, TWHN-0, and TWHN-0.5 glasses. The inset shows the magnified absorption band of Ho near 900 nm in TWHN-0 glass.

Image of FIG. 2.
FIG. 2.

IR fluorescence spectra in Nd/Ho co-doped TWHN-x (x = 0, 0.2, 0.5, 1, 1.5, 2) glasses with 808 nm excitation. The inset shows fluorescence decay curve of Ho:I level in TWHN-0.5 glass.

Image of FIG. 3.
FIG. 3.

Simplified energy level diagrams of Nd and Ho with relative transitions and energy transfer processes between Nd and Ho.

Image of FIG. 4.
FIG. 4.

(a) Upconversion luminescence spectra in TWHN-x (x = 0, 0.2, 0.5, 1, 1.5, 2) glasses upon 1.8 W 808 nm excitation. (b) NIR fluorescence spectra in TWHN-x glasses under 808 nm excitation. The inset shows the magnified emission band of Ho near 1200 nm.

Image of FIG. 5.
FIG. 5.

(a) Absorption and emission cross sections in TWHN-0.5 glass, (1) Nd:FI; (2) Ho:II; (3) Ho:II; (4) Ho:II. Note that the absorption cross section of Ho near 900 nm is magnified 10 times. (b) Fluorescence decay curves of Nd in TWN and TWHN-0.5 glasses.

Tables

Generic image for table
Table I.

Comparison of J-O intensity parameters of Ho ions in various glass hosts.

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/content/aip/journal/jap/113/17/10.1063/1.4803043
2013-05-02
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Efficient 2.0 μm emission in Nd3+/Ho3+ co-doped tungsten tellurite glasses for a diode-pump 2.0 μm laser
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4803043
10.1063/1.4803043
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