Effect of Temperature on Upconversion Luminescence in Yb^{3+}/Tb^{3+} Co-Doped Germanate Glass

• Authors: M. Kochanowicz , D. Dorosz , J. Zmojda , P. Miluski , J. Dorosz
• Languages of publication: EN

Abstracts

EN

In the article effect of temperature on the cooperative energy transfer in germanate glass co-doped with $Yb^{3+}/Tb^{3+}$ under 976 nm laser diode pumping was investigated. The optimization of $Tb^{3+}$ concentration on the upconversion luminescence was determined. Strong luminescence at 489, 543, 586, 621 nm corresponding to $^{5}D_{4} → ^{7}F_{J}$ (J = 6,4,3) transitions and luminescence at 381, 415, 435 nm resulting from $^{5}D_{3}, ^{5}G_6 → ^{7}F_{J}$ (J=6,5,4) transitions were presented. The highest upconversion emission intensity was obtained in glass co-doped with $0.7Yb_{2}O_{3}/0.7Tb_{2}O_{3}$ (mol%). The effect of temperature on the luminescent properties of germanate glass in the range of 5-250°C indicates the presence of competing phenomena: an increase in the effective absorption cross-section of $Yb^{3+}$ ions donor as a function of temperature and migration of energy between pairs of ions $Yb^{3+}-Yb^{3+}$ and of multiphonon excitation levels $^{7}F_{J}$.

Keywords

EN

42.70.-a; 42.79.Ag; 42.81.-i

Discipline

• 42.70.-a: Optical materials(see also 81.05.-t Specific materials: fabrication, treatment, testing and analysis)
• 42.81.-i: Fiber optics
• 42.79.Ag: Apertures, collimators

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 3
• Pages: 471-473

Dates

published

2013-09

Contributors

author

M. Kochanowicz

• Department of Optoelectronics and Lighting Technology, Faculty of Electrical Engineering, Białystok University of Technology, Wiejska 45D, 15-351 Białystok, Poland

author

D. Dorosz

• Department of Optoelectronics and Lighting Technology, Faculty of Electrical Engineering, Białystok University of Technology, Wiejska 45D, 15-351 Białystok, Poland

author

J. Zmojda

• Department of Optoelectronics and Lighting Technology, Faculty of Electrical Engineering, Białystok University of Technology, Wiejska 45D, 15-351 Białystok, Poland

author

P. Miluski

• Department of Optoelectronics and Lighting Technology, Faculty of Electrical Engineering, Białystok University of Technology, Wiejska 45D, 15-351 Białystok, Poland

author

J. Dorosz

• Department of Optoelectronics and Lighting Technology, Faculty of Electrical Engineering, Białystok University of Technology, Wiejska 45D, 15-351 Białystok, Poland

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Identifiers

DOI

10.12693/APhysPolA.124.471