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The tungsten gadolinium borate glass doped with Er 3+  and co-doped with Er 3+ /Yb 3+  were prepared by melt quenching technique to study the absorption, Judd-Ofelt theory, and luminescence properties. The glass composition (30-x) B 2 O 3  - 42.5 WO 3  - 27.5 Gd 2 O 3  - xEr 2 O 3  (where x = 0.1 mol %) and (30-x-y) B 2 O 3  - 42.5 WO 3  - 27.5 Gd 2 O 3  - xEr 2 O 3  - yYb 2 O 3  (where x = 0.1 mol % and y = 1.0 mol %). The absorption spectra display the absorption peaks of the samples correspond with Yb 3+  and Er 3+  in the glass network, and the spectral parameters of each absorption and emission peaks were calculated using the Judd-Ofelt theory. NIR photoluminescence under 978 nm excitation was measured of glass in the region 1400-1700 nm. NIR emission display a peak centered at 1543 nm. This research is available for tunable laser and conventional-length optical amplifier.

Study on Judd-Ofelt theory for Er3+ and Yb3+ doped tungsten gadolinium borate glasses for NIR lighting application

Study on Judd-Ofelt theory for Er³⁺ and Yb³⁺ doped tungsten gadolinium borate glasses for NIR lighting application