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Novel Ga–Sb–S chalcogenide glasses doped with different amount of Dy3+ ions were prepared. Their thermal stability, optical properties, and mid-infrared (MIR) emission properties were investigated. The glasses show good thermal stability, excellent infrared transparency, very low phonon energy (∼306cm−1), and intense emissions centered at 2.95, 3.59, 4.17 and 4.40μm. Three Judd–Ofelt intensity parameters...
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