Effect of Tm3+ codoping on the near-infrared and upconversion emissions of Er3+ in TeO2–ZnO–ZnF2 glasses

In this work, we report the near-infrared emission and upconversion of Er3+–Tm3+ codoped fluorotellurite TeO2–ZnO–ZnF2 glasses for different Tm3+ concentrations by using steady-state and time-resolved spectroscopy. A broad emission from 1350 to 1700nm corresponding to the 3H4→3F4 (Tm3+) and 4I13/2→4...

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Bibliographic Details
Published in:Journal of luminescence 2014-10, Vol.154, p.136-141
Main Authors: Miguel, A., Arriandiaga, M.A., Morea, R., Fernandez, J., Gonzalo, J., Balda, R.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Energy transfer
Er3+/Tm3+ codoping
Exact sciences and technology
Fluorotellurite glasses
Laser spectroscopy
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
Upconversion
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Summary:In this work, we report the near-infrared emission and upconversion of Er3+–Tm3+ codoped fluorotellurite TeO2–ZnO–ZnF2 glasses for different Tm3+ concentrations by using steady-state and time-resolved spectroscopy. A broad emission from 1350 to 1700nm corresponding to the 3H4→3F4 (Tm3+) and 4I13/2→4I15/2 (Er3+) emissions which cover the complete telecommunication window of the wavelength-division-multiplexing transmission systems is observed. The full width at half-maximum of this broadband increases with increasing Tm3+/Er3+ concentration ratio up to a value of~150nm. Energy transfer between Er3+ and Tm3+ ions is also observed and analyzed by both the temporal behavior of the near-infrared luminescence and the effect of Tm3+ codoping on the visible upconversion of Er3+ ions. The addition of Tm3+ reduces the upconverted green emission due to Er3+→Tm3+ energy transfer whereas the red emission is enhanced due to the cross-relaxation 3F4→3H6(Tm3+):4I11/2→4F9/2(Er3+) process. •Broadband emission covering the bands S, C+L and U of the optical telecommunications.•The effect of Tm3+ concentration were investigated in Er3+–Tm3+ codoped fluorotellurite glasses.•Efficient Er3+↔Tm3+ energy transfer in fluorotellurite glasses.•Increase of the red upconversion emission with Tm3+ concentration due to cross-relaxation processes.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2014.04.020