Role of charge transfer state and host matrix in Eu3+-doped alkali and earth alkali fluoro-aluminoborate glasses

Thanh, Nguyen Huu; Quang, Vu Xuan; Tuyen, Vu Phi; Tam, Ngo Van; Hayakawa, Tomokatsu; Huy, Bui The

doi:10.1016/j.optmat.2012.03.006

Cited by 9 publications

(1 citation statement)

References 30 publications

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“…Other REE ions may be additionally introduced into glassy materials to increase the ratio between the populations of these levels. Eu 3+ ions are suggested to be applicable for the alteration of level populations because the structure of Eu 3+ energy levels in the 3500-5000 cm −1 wavelength range provides a strong interionic interaction of the 7 F and 5 D 1 terms in Eu 3+ ions [6][7][8]. However, at the present time, the kinetic characteristics of Er 3+ emitting transitions in the presence of Eu 3+ ions and the cross-relaxation of Er 3+ ion states in several tellurite glasses have not been elicited in detail.…”

Section: Introductionmentioning

confidence: 99%

Influence of Eu³⁺ ions on 1.5 µm luminescence of Er³⁺ in TeO₂–ZnO–Bi₂O₃ glasses

Savikin,

Sumachev,

Krasnov

et al. 2023

Laser Phys. Lett.

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TeO2–ZnO–Bi2O3 glasses doped with Eu3+ and Er3+ ions were prepared and investigated for their physical, optical, and luminescent properties. The optical band gap is calculated for the indirect transition and is within the 3.04–3.10 eV range. The Urbach energy varies from 0.135 to 0.098 eV with the increase in Eu3+ compound content. Bi2Te2O8 and ZnTeO3 complex oxide phases are generated in the mixture as intermediate compounds in the course of charge thermal processing. The additional doping of TeO2–ZnO–Bi2O3:Er3+ glass samples with Eu3+ ions is shown to lead to the appearance of cross-relaxation channels of the Er3+ ion states and decreases the population of the 4I13/2 state of the Er3+ ions. Simultaneously, the excited 4I11/2 state of the Er3+ ions is also subjected to strong cross-relaxation decay. The Eu3+ ions are shown to decrease the 4I13/2 level population of Er3+ ions, which may facilitate the attainment of population inversion if the 4I13/2 level is at the lower level of the laser transition.

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Section: Introductionmentioning

confidence: 99%