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Color variation of the up-conversion luminescence in Er3+-Yb3+ Co-doped lead germanate glasses and microsphere integrated devices
Date
2020
Abstract
Lead germanate glass samples with different Er3+/Yb3+ concentrations co-doped were prepared and the color variation of the up-conversion emissions in these glasses was observed using 980 nm laser pump power. A practical optical integrated device based on Er3+-Yb3+ co-doped lead germanate glass microsphere and a special fiber structure, consisting of single mode fiber (SMF), multimode fiber (MMF) and a suspended tri-core hollow fiber (STCHF) is proposed. As the pump light is coupled into the microsphere from the cores suspended inside the STCHF, the microsphere fixed in the air hole of the STCHF is excited and the up-conversion emissions can also be observed. Furthermore, when the pump power is increased, the luminescence output color of the microsphere can be readily tuned from yellow to green due to the change of the luminescence intensity ratio of the red to green emissions. This in-fiber microsphere resonator integrated device has the potential to be widely applied in multicolor displays, optical sensors and laser devices owing to its compact structure and excellent performance.
Supervisor
Description
peer-reviewed
Publisher
IEEE Computer Society
Citation
Journal of Lightwave Technology; 38 (16)
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Lewis_2020_Color.pdf
Adobe PDF, 795.29 KB
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Funding Information
National Natural Science Foundation of China, Natural Science Foundation of Heilongjiang, Science Foundation Ireland (SFI)