Effect of concentration on down- and up-conversion luminescence in Er3+doped lithium-zinc-tellurite glass
Source abstract
Abstract
The effect of Er 2O 3 concentration on the structural, physical, and spectroscopical properties of (70- x)TeO 2-20ZnO-10Li 2O-xEr 2O 3 glasses ( x = 0.1–4 mol %) was studied by X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), Fourier transformed infrared spectroscopy (FT-IR), density measurements, optical absorption, photoluminescence, and time-resolved spectroscopic techniques. All glasses are amorphous, as observed by XRD. FT-IR showed changes in the non-bonding oxygens band, and EDS detected aluminum from crucible leaching, which influenced the physical properties. According to optical absorption spectra, the doped glasses are more UV transparent than the glass matrix. Photoluminescence was characterized first under a UV excitation wavelength, determining the time decay and Er 3+→Er 3+ energy transfer mechanisms by monitoring the 2H 11/2→ 4I 15/2 and 4S 3/2→ 4I 15/2 transitions. The up-conversion process was monitored using two CW lasers with wavelengths of 808 and 975 nm, varying the power in a wide range, and it was determined that the two-photon process dominates the anti-stokes emission mechanism.
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Research context
OpenAlex topics: Glass properties and applications · Luminescence Properties of Advanced Materials · Photorefractive and Nonlinear Optics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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