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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bhadra, S. K.
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Topics
Publications (7/7 displayed)
- 2011Double-pass erbium-doped zirconia fiber amplifier for wide-band and flat-gain operationscitations
- 2010Performance comparison of Zr-based and Bi-based erbium-doped fiber amplifierscitations
- 2010Wideband EDFA based in erbium doped crystalline zirconia yttria alumino silicate fibercitations
- 2010Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preformcitations
- 2010Ytterbium-doped Y2O3 nanoparticle silica optical fibers for high power fiber lasers with suppressed photodarkeningcitations
- 2009All Fibre based Hydrogen Sensing using Palladium coated Long Period Gratings
- 2009Ytterbium doped nanostructured optical fibers for high power fiber lasers
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article
Yb2O3-doped YAG nano-crystallites in silica-based core glass matrix of optical fiber preform
Abstract
Yb<sub>2</sub>O<sub>3</sub>-doped yttrium aluminium garnet (YAG) nano-crystals within the silicate glass-based optical fiber preforms were obtained through the conventional-modified chemical vapour deposition (MCVD) and solution doping technique. Nano-crystals were developed with soaking of the porous phospho-silica or pure silica core layer in a solution containing the ytterbium, yttrium and other co-dopants, including fluorine using 10-15% fluorosilicic acid, and through post-annealing of the preform at a temperature of around 1450 °C. The size, shape and nature of Yb<sub>2</sub>O<sub>3</sub>-doped phase-separated nano-crystallites were evaluated from HRTEM images along with the electron diffraction pattern based on the doping levels of phosphorous and fluorine. The size of nano-crystallites was maintained within 6-10 nm when doped with 0.25 mole% of fluorine. X-ray analyses EDX data reveals that the nano-particles are rich in Yb:YAG, and uniformly dispersed into the amorphous silica glass matrix. The novelty of this technique involves the direct synthesis of rare-earth doped phase-separated nano-crystallites within the core region of silica glass preforms. This class of fibers containing the nano-particles with or without Yb:YAG crystalline nature will keep the advantage of the mechanical properties as well as good lasing properties under high power application compared to the Yb:YAG ceramic laser.