Publication: Spectroscopic properties ot Tm3+: TeO2-PbF2 glasses
Program
KU-Authors
KU Authors
Co-Authors
Demirbas, Ümit
Kabalcı, İdris Özen, Gönül
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Type
Embargo Status
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Volume Title
Alternative Title
Abstract
We investigated the near-infrared luminescence characteristics as a function of glass composition and Tm3+ ion concentration in a new type of Tm3+-doped tellurite glass: (1-x)TeO2-(x)PbF2. In the experiments, absorption measurements were first performed to determine the spontaneous emission probabilities and the radiative lifetimes for the 4f-4f transitions of the Tm3+ ions by using the Judd-Ofelt theory. Luminescence measurements show that with increasing thulium concentration, the strength of the 1470-nm band decreases with respect to that at 1800nm due to cross relaxation. Emission cross sections were further determined as a function of host composition by using the luminescence data. For a fixed thulium concentration of 1 mol %, samples with x = 20 mol % had the highest emission cross sections at 1470 and 1800 nm. Finally, lifetime measurements showed that the luminescence quantum efficiencies of the 1470- and 1800-nm transitions were maximum for host compositions with x = 20 and 22 mol%, respectively.
Source
Publisher
Elsevier
Subject
Optics
Citation
Has Part
Source
Journal of Luminescence
Book Series Title
Edition
DOI
10.1016/j.jlumin.2005.03.006