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27 April 2001 Cooperative upconversion in a new high-Er-doped tellurite glass
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Proceedings Volume 4282, Rare-Earth-Doped Materials and Devices V; (2001)
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States
A model for population dynamics of Er3+ in tellurite glasses with high erbium concentrations is proposed. Luminescence decay curves from transitions of 4I13/2 yields 4I15/2 and 4S3/2 yields 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 + 4I9/2 yields 4I15/2 + 4I15/2 is found to be 2.74 X 10-18 cm3/s and for 4I11/2 + 4I11/2 yields 4I15/2 + 2F7/2 is 1.09 X 10-18 cm3/s. The model provides a god 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.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yongdan Hu, Shibin Jiang, Gino Sorbello, Tao Luo, Yong Ding, Bor-Chyuan Hwang, Jung-Hwan Kim, Hyo-Jin Seo, and Nasser Peyghambarian "Cooperative upconversion in a new high-Er-doped tellurite glass", Proc. SPIE 4282, Rare-Earth-Doped Materials and Devices V, (27 April 2001);

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