Abstract
The top seed solution growth (TSSG) method was used to grow the x mol% Yb, 5 mol%Er: Na0.04K0.96Y(WO4)2(x = 1, 3, 5, 7) (Yb, Er: NKYW) crystals. The structure and physical properties of the crystals were investigated using TG-DTA and X-ray diffraction (XRD) characterization. The absorption and luminescence intensities of crystals doped with various concentrations of rare earth ions were studied. Inside the crystal, the luminescence mechanism is based on Yb3+ ions as the sensitizer and Er3+ ions as the activator. The x mol% Yb, 5 mol%Er: NKYW (x = 1, 3, 5, 7) crystal spectral intensity parameters Ω2, Ω4, and Ω6 were calculated using the Judd-Ofelt theory. The absorption cross section, emission cross section, and gain cross section assisted analysis concluded that the 3 mol% Yb, 5 mol%Er: NKYW crystal has high laser emission potential. This research helps to advance the development of high- performance laser materials.
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