Abstract
A model for population dynamics of Er3+ in tellurite glasses with high erbium concentrations is proposed. Luminescence decay curves from transitions of 4I13/2→ 4I15/2 and 4S3/2→4I15/2 were measured experimentally. Cooperative upconversion coefficients were obtained by numerically solving the rate equations of the model to fit the population dynamics of the 4I13/2 and 4S3/2 levels. The cooperative upconversion coefficient for 4I13/2+4I13/2→ 4I9/2+4I15/2 is found to be 2.74×10-18 cm3/s and for 4I11/2+4I11/2→ 4I15/2+2F7/2 is 1.09×10-18 cm3/s. The model provides a good basis for explaining the experiment data as it shows a high sensitivity to the input fitting parameters. This model can be used to analyze spectroscopic properties of Er3+ ions in glass hosts where various energy levels of Er3+ and transitions between them cannot be neglected.
Original language | English (US) |
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Pages (from-to) | 57-74 |
Number of pages | 18 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 4282 |
DOIs | |
State | Published - 2001 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering