Influences of Mn2+ ions, and Mn2+–Yb3+ dimer on the optical band gaps and bandwidth flatness of near-infrared emissions of Ho3+/Tm3+, Ho3+/Tm3+/Yb3+ co-doped calcium aluminosilicate glasses
Source abstract
Abstract
We investigate and report the influences of Mn 2+−Yb 3+ dimer on the optical band gaps and bandwidth flatness of near-infrared (NIR) emission spectra of Ho 3+/Tm 3+, and Ho 3+/Tm 3+/Yb 3+ co-doped CaO–Al 2O 3–SiO 2 (CAS) calcium aluminosilicate glasses. Differential thermal analysis (DTA) and Energy dispersive X-ray spectroscopy (EDS) analyzes were performed to determine temperature values for heat treatment and elemental composition existing in the glass materials, respectively. NIR emission spectra of Ho 3+/Tm 3+/Yb 3+ co-doped CAS glasses with a bandwidth of ∼450 nm using a 980 nm laser diode (LD) as the excitation resource was identified. Influences of Mn 2+ ions and Mn 2+–Yb 3+ dimer on the direct/indirect optical band gaps, and bandwidth flatness of NIR emission of Ho 3+/Tm 3+/Yb 3+ co-doped were investigated. At the same time, we determined the optimal Mn 2+:Yb 3+concentration ratio for the best flatness of the bandwidth NIR emission of Ho 3+/Tm 3+/Yb 3+ co-doped CAS glasses.
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Research context
OpenAlex topics: Glass properties and applications · Luminescence Properties of Advanced Materials · Phase-change materials and chalcogenides
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