Compositional dependence of up-conversion emission and optical transition in Yb3+-Ho3+ codoped tellurite-phosphate glasses

Yanmin Yang; Wei Zhang; Shuqing Guo; Zhiping Yang

doi:10.1117/12.869470

21 July 2010 Compositional dependence of up-conversion emission and optical transition in Yb³⁺-Ho³⁺ co-doped tellurite-phosphate glasses

Yanmin Yang, Wei Zhang, Shuqing Guo, Zhiping Yang

Author Affiliations +

Proceedings Volume 7749, 2010 International Conference on Display and Photonics; 77490E (2010) https://doi.org/10.1117/12.869470
Event: 2010 International Conference on Display and Photonics, 2010, Nanjing, China

Abstract

Optical absorption and photoluminescence properties of Yb³⁺-Ho³⁺ co-doped tellurite-phosphate glasses have been investigated. Up-conversion emissions have been observed at 540nm (green) and 650nm (red) at room temperature. The effect of host composition on up-conversion luminescence has been studied by analyzing the phenomenological Judd-Ofelt parameters Ωλ (λ = 2,4,6) as well as radiative transition probability and emission cross sections of ⁵F₄ (⁵S₂) and ⁵F₅ levels in these glasses samples. Obtained data indicated that the green transition rapidly decreased relative to the red transition with increasing phosphate concentration, which can be attributed to increasing population of ⁵F₄ (⁵S₂) and ⁵F₅ levels due to increasing host phonon energy. So, the color of up-conversion emission can be modulated by changed host composition. The effect of Ho³⁺ concentration on up-conversion emission was also studied in Yb³⁺-Ho³⁺ co-doped tellurite glasses. The red transition rapidly decreased relative to the green transition with increasing Ho³⁺ concentration. We attributed it to the lower phonon energy of tellurite glass host.

Citation Download Citation

Yanmin Yang, Wei Zhang, Shuqing Guo, and Zhiping Yang "Compositional dependence of up-conversion emission and optical transition in Yb³⁺-Ho³⁺ co-doped tellurite-phosphate glasses", Proc. SPIE 7749, 2010 International Conference on Display and Photonics, 77490E (21 July 2010); https://doi.org/10.1117/12.869470

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