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- W2024559928 abstract "Using the sol-gel process, we prepared three groups of Er-doped glasses, namely, Er-doped Si0<sub>2</sub>-A10<sub>1.5</sub> (SAB) glass, Er-doped Si0<sub>2</sub>-Ti0<sub>2</sub>-A10<sub>1.5</sub> (STAE) glass, and Er-doped Si0<sub>2</sub>-Ge0<sub>2</sub>-Al0<sub>1.5</sub> (SGAE) glass. Various erbium concentration and different host composition under the same processing condition have been studied in order to optimize the material composition to get the strongest fluorescence emission for each material system. It has been found that for SAE glass, the strongest fluorescence emission is obtained when the mole ratio of the three constituent oxides is lOOSiO<sub>2</sub> : 20A10<sub>1.5</sub> 2ErO<sub>1.5</sub>. For the STAE material system, the best composition ratio for the strongest fluorescence emission is 93 Si0<sub>2</sub> : 7TiO<sub>2</sub>: 20A10<sub>1.5</sub> : lErO<sub>1.5</sub>, whereas the value for SGAE glass is 9OSiO<sub>2</sub>:lOGeO<sub>2</sub> : 2OAlO<sub>1.5</sub>: 1ErO<sub>1.5</sub>. But the relative lifetimes were obtained with the recipe lOOSiO<sub>2</sub>:10A10<sub>1.5</sub>:1ErO<sub>1.5</sub> for SAE series, 90 Si0<sub>2</sub>:lOGeO<sub>2</sub>:1OAlO<sub>1.5</sub>: 1ErO<sub>1.5</sub> for STAE group and 93 Si0<sub>2</sub>:7Ti0<sub>2</sub>:20A10<sub>1.5</sub>:1ErO<sub>1.5</sub> for STAE group. Using these recipes, three 20-layer (up to 2.5 μm) crack-free films have been deposited on silica-on-silicon (SOS) substrates with multiple spin-coating and rapid thermal annealing (RTA). Only the STAE film and the SGAE film are found to guide light. The experimental results show that STAB glasses have higher hydrophilicity than SGAE glasses and SGAE glasses has lower crystallization temperature than STAE glasses. The fact that these waveguiding films emit relatively strong fluorescence around the wavelength of 1.55 μm implies that such planar waveguides are potential candidates from which integrated optical waveguide amplifiers and lasers operating at the third optical fiber communication window can be fabricated." @default.
- W2024559928 created "2016-06-24" @default.
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- W2024559928 date "1999-11-12" @default.
- W2024559928 modified "2023-09-26" @default.
- W2024559928 title "Comparison of Er-doped sol-gel glasses with various hosts" @default.
- W2024559928 cites W2026562472 @default.
- W2024559928 doi "https://doi.org/10.1117/12.370380" @default.
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