Concentration quenching of the 1470-nm emission in Tm3+-doped lead-niobium-germanate glasses

Rolindes Balda; Luis M. Lacha; Joaquin M. Fernandez; Jose M. Fernandez-Navarro

doi:10.1117/12.588546

4 April 2005 Concentration quenching of the 1470-nm emission in Tm³⁺-doped lead-niobium-germanate glasses

Rolindes Balda, Luis M. Lacha, Joaquin M. Fernandez, Jose M. Fernandez-Navarro

Proceedings Volume 5723, Optical Components and Materials II; (2005) https://doi.org/10.1117/12.588546
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

In this work, we have studied the concentration quenching of the ³H₄→³F₄ emission of Tm³⁺ doped lead-niobium-germanate glasses (GeO₂-PbO-Nb₂O₅) for different Tm³⁺ concentrations (0.1, 0.2, 0.5, 1, 2, and 3 wt%). The emission spectra obtained under 798 nm excitation reveal the existence of energy transfer via cross-relaxation among Tm³⁺. As a result, the intensity of the infrared ³H₄→³F₄ emission at 1474 nm decreases in relation to that of the 1820 nm emission as concentration increases. The non-exponential character of the decays from the ³H₄ level with increasing concentration, together with the dependence of the effective decay rates on Tm³⁺ concentration, indicate the presence of a dipole-dipole quenching process in the framework of a diffusion-limited regime.

Citation Download Citation

Rolindes Balda, Luis M. Lacha, Joaquin M. Fernandez, and Jose M. Fernandez-Navarro "Concentration quenching of the 1470-nm emission in Tm³⁺-doped lead-niobium-germanate glasses", Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); https://doi.org/10.1117/12.588546

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