Tunable upconversion emission in NaLuF4-glass-ceramic fibers doped with Er3+ and Yb3+

G. Gorni; J. J. Velazquez; M. Kochanowicz; D. Dorosz; R. Balda; J. Fernandez; A. Durán; M. J. Pascual

doi:10.1117/12.2558048

1 April 2020 Tunable upconversion emission in NaLuF₄-glass-ceramic fibers doped with Er³⁺ and Yb³⁺

G. Gorni, J. J. Velazquez, M. Kochanowicz, D. Dorosz, R. Balda, J. Fernandez, A. Durán, M. J. Pascual

Proceedings Volume 11357, Fiber Lasers and Glass Photonics: Materials through Applications II; 113570B (2020) https://doi.org/10.1117/12.2558048
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

In this work, we report the influence of the excitation power density on the upconversion emission of Er³⁺ ions in novel glass-ceramic optical fibers containing NaLuF₄ nanocrystals codoped with 0.5ErF₃ and 2YbF₃ (mol%) prepared by the rod-in-tube method and controlled crystallization. Intense upconverted green and red emissions due to (²H_11/2,⁴S_3/2)→⁴I_15/2 and 4F_9/2→⁴I_15/2 transitions, respectively, together with a blue emission due to ²H_9/2→⁴I_15/2 transition has been observed under excitation at 980 nm. The upconversion emission color changes from yellow to green by increasing the excitation power density which allows to manipulate the color output of the Er³⁺ emission in the glass ceramic fibers. The tunable emission color is easily detected with the naked eye. This interesting characteristic makes these glass-ceramic fibers promising materials for photonic applications.

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G. Gorni, J. J. Velazquez, M. Kochanowicz, D. Dorosz, R. Balda, J. Fernandez, A. Durán, and M. J. Pascual "Tunable upconversion emission in NaLuF₄-glass-ceramic fibers doped with Er³⁺ and Yb³⁺", Proc. SPIE 11357, Fiber Lasers and Glass Photonics: Materials through Applications II, 113570B (1 April 2020); https://doi.org/10.1117/12.2558048

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