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Ho 3+ /Yb 3+ codoped lanthanum–tungsten–tellurite (TWL) glasses are prepared by melt-quenching method. The Judd–Ofelt intensity parameters (Ω t t=2, 4, 6), radiative transition rates, radiative lifetimes, and branching ratios of Ho 3+ are calculated based on the absorption spectrum to evaluate the spectroscopic properties of Ho 3+ in TWL glass. The mid-infrared...
Transparent oxyfluoride glass and glass ceramics doped with 3.0mol% Yb 3+ and 0.5mol% Ho 3+ ions have been prepared. The investigated samples show efficient 2.0μm emission. The absorption and emission cross sections corresponding to the 5 I 7 – 5 I 8 transitions of Ho 3+ (at 2.0μm) have been calculated according to the McCumber theory. Glass...
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