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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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Prasad, Amrita
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2010Highly Nonlinear Ge11.5As24Se64.5 nanowires with a nonlinear parameter up to 150,000 W-1km-1
- 2010Highly Nonlinear Ge11.5As24Se64.5 nanowires with a nonlinear parameter up to 150,000 W-1km-1
- 2009Ge11.5As24Se64.5 Glass
- 2009Optically nonlinear chalcogenide glasses for all-optical signal processingcitations
- 2009Ge11.5As24Se64.5 Glass: a New Material for the Fabrication of Highly Nonlinear (!!33,000W-1km-1) Dispersion Engineered Waveguides
- 2008Properties of GexAsySe1-x-y glasses for all-optical signal processingcitations
- 2007Properties and structure of Ag-doped As2Se3 glassescitations
- 2007Optical properties and structural correlations of GeAsSe chalcogenide glassescitations
- 2006Optical characterization of Ge-As-Se glasses containing high content of germaniumcitations
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article
Optical properties and structural correlations of GeAsSe chalcogenide glasses
Abstract
<p>Ge <sub>x</sub>As <sub>y</sub>Se <sub>100-x-y</sub> (33 ≤ x ≤ 39 and 12 ≤ y ≤ 16) glasses were prepared, and their structure and optical properties were studied by Raman and UV-Vis-IR spectroscopic techniques. Ge-tetrahedrons [GeSe <sub>4</sub>] dominated in the structural units, and 'defect' bonds, such as Ge-Ge, Ge-As and As-As bonds, also occurred in the glasses. A structural model for calculation of the optical band gap energy (E <sub>g</sub>) of Ge-As-Se glasses was proposed, and the calculated values are consistent with experimental results. Increasing germanium and decreasing selenium content can reduce both the mean bond energies and optical band gap energies, enhancing the photo-sensitivity of the glasses.</p>