Enhanced 2.0 microm emission and gain coefficient of transparent glass ceramic containing BaF2: Ho3+,Tm3+ nanocrystals.
Identifieur interne : 000506 ( PubMed/Curation ); précédent : 000505; suivant : 000507Enhanced 2.0 microm emission and gain coefficient of transparent glass ceramic containing BaF2: Ho3+,Tm3+ nanocrystals.
Auteurs : W J Zhang [République populaire de Chine] ; Q Y Zhang ; Q J Chen ; Q. Qian ; Z M Yang ; J R Qiu ; P. Huang ; Y S WangSource :
- Optics express [ 1094-4087 ] ; 2009.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Barium Compounds, Fluorides, Holmium, Thulium.
- chemistry : Ceramics, Glass, Nanoparticles.
- instrumentation : Spectrophotometry, Infrared.
- Equipment Design, Ions, Lasers, Microscopy, Electron, Transmission, X-Ray Diffraction.
Abstract
Transparent glass ceramic containing BaF(2):Ho(3+),Tm(3+) nanocrystals has been prepared by melt quenching and subsequent thermal treatment. The precipitation of BaF(2) nanocrystals was confirmed by X-ray diffraction and high-resolution transmission electron microscopy. Intense 2.0 microm fluorescence originating from Ho(3+): (5)I(7) --> (5)I(8) transition was achieved upon excitation with 808 nm laser diode. A large ratio of forward Tm(3+) --> Ho(3+) energy transfer constant to that of backward process indicated high efficient energy transfer from Tm(3+)((3)F(4)) to Ho(3+)((5)I(7)), benefited from the reduced ionic distances of Tm(3+)-Tm(3+) and Tm(3+)-Ho(3+) pairs and low phonon energy environment with the incorporation of rare-earth ions into the precipitated BaF(2) nanocrystals. The results indicate that glass ceramic is a promising candidate material for 2.0 microm laser.
PubMed: 19997333
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<term>Ceramics (chemistry)</term>
<term>Equipment Design</term>
<term>Fluorides (chemistry)</term>
<term>Glass (chemistry)</term>
<term>Holmium (chemistry)</term>
<term>Ions</term>
<term>Lasers</term>
<term>Microscopy, Electron, Transmission</term>
<term>Nanoparticles (chemistry)</term>
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<term>Conception d'appareillage</term>
<term>Céramiques ()</term>
<term>Diffraction des rayons X</term>
<term>Fluorures ()</term>
<term>Holmium ()</term>
<term>Ions</term>
<term>Lasers</term>
<term>Microscopie électronique à transmission</term>
<term>Nanoparticules ()</term>
<term>Spectrophotométrie IR (instrumentation)</term>
<term>Thulium ()</term>
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<term>Holmium</term>
<term>Thulium</term>
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<term>X-Ray Diffraction</term>
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<term>Céramiques</term>
<term>Diffraction des rayons X</term>
<term>Fluorures</term>
<term>Holmium</term>
<term>Ions</term>
<term>Lasers</term>
<term>Microscopie électronique à transmission</term>
<term>Nanoparticules</term>
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<front><div type="abstract" xml:lang="en">Transparent glass ceramic containing BaF(2):Ho(3+),Tm(3+) nanocrystals has been prepared by melt quenching and subsequent thermal treatment. The precipitation of BaF(2) nanocrystals was confirmed by X-ray diffraction and high-resolution transmission electron microscopy. Intense 2.0 microm fluorescence originating from Ho(3+): (5)I(7) --> (5)I(8) transition was achieved upon excitation with 808 nm laser diode. A large ratio of forward Tm(3+) --> Ho(3+) energy transfer constant to that of backward process indicated high efficient energy transfer from Tm(3+)((3)F(4)) to Ho(3+)((5)I(7)), benefited from the reduced ionic distances of Tm(3+)-Tm(3+) and Tm(3+)-Ho(3+) pairs and low phonon energy environment with the incorporation of rare-earth ions into the precipitated BaF(2) nanocrystals. The results indicate that glass ceramic is a promising candidate material for 2.0 microm laser.</div>
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<Abstract><AbstractText>Transparent glass ceramic containing BaF(2):Ho(3+),Tm(3+) nanocrystals has been prepared by melt quenching and subsequent thermal treatment. The precipitation of BaF(2) nanocrystals was confirmed by X-ray diffraction and high-resolution transmission electron microscopy. Intense 2.0 microm fluorescence originating from Ho(3+): (5)I(7) --> (5)I(8) transition was achieved upon excitation with 808 nm laser diode. A large ratio of forward Tm(3+) --> Ho(3+) energy transfer constant to that of backward process indicated high efficient energy transfer from Tm(3+)((3)F(4)) to Ho(3+)((5)I(7)), benefited from the reduced ionic distances of Tm(3+)-Tm(3+) and Tm(3+)-Ho(3+) pairs and low phonon energy environment with the incorporation of rare-earth ions into the precipitated BaF(2) nanocrystals. The results indicate that glass ceramic is a promising candidate material for 2.0 microm laser.</AbstractText>
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