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Tm 3+ -doped glass samples based on GeO 2 –TeO 2 (or SiO 2 )–PbO–CaO are fabricated and characterized. The thermal properties, density, refractive index, theoretical optical basicity and Knoop hardness of the glass samples are determined. Fuchtbauer–Ladenburg formula is applied to calculate the stimulated emission cross-sections of the glass samples. The fluorescent...
A Tm 3+ /Ho 3+ co-doped silicate glass with good thermal stability is prepared by the melt-quenching method. Efficient ∼2μm emission is observed under 808nm laser excitation. The infrared emission characteristics and energy transfer mechanism are investigated. To obtain efficient ∼2μm emission, the optimized concentration ratio of Tm 3+ to Ho 3+ is found to be 0.75:0...
A Tm 3+ -doped silicate glass (SiO 2 –CaO–Na 2 O–K 2 O) with good thermal stability is prepared by the melt-quenching method. Intense 1.8μm emission is obtained when pumped by an 808nm laser diode. Based on the measured absorption spectra, radiative properties are predicted using Judd–Ofelt theory and Judd–Ofelt parameters Ω λ (λ=2, 4, 6), as well as absorption...
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