Cooperative upconversion in a new high-Er-doped tellurite glass

Yongdan Hu; Shibin Jiang; Gino Sorbello; Tao Luo; Yong Ding; Bor-Chyuan Hwang; Jung-Hwan Kim; Hyo-Jin Seo; Nasser Peyghambarian

doi:10.1117/12.424760

27 April 2001 Cooperative upconversion in a new high-Er-doped tellurite glass

Yongdan Hu, Shibin Jiang, Gino Sorbello, Tao Luo, Yong Ding, Bor-Chyuan Hwang, Jung-Hwan Kim, Hyo-Jin Seo, Nasser Peyghambarian

Author Affiliations +

Proceedings Volume 4282, Rare-Earth-Doped Materials and Devices V; (2001) https://doi.org/10.1117/12.424760
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

A model for population dynamics of Er³⁺ in tellurite glasses with high erbium concentrations is proposed. Luminescence decay curves from transitions of ⁴I_13/2 yields ⁴I_15/2 and ⁴S_3/2 yields ⁴I_15/2 were measured experimentally. Cooperative upconversion coefficients were obtained by numerically solving the rate equations of the model to fit the population dynamics of the ⁴I_13/2 and ⁴S_3/2 levels. The cooperative upconversion coefficient for ⁴I_13/2 + ⁴I_9/2 yields ⁴I_15/2 + ⁴I_15/2 is found to be 2.74 X 10^-18 cm³/s and for ⁴I_11/2 + ⁴I_11/2 yields ⁴I_15/2 + ²F_7/2 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.

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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); https://doi.org/10.1117/12.424760

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