14 June 2004 Spectroscopic properties of Tm3+ ions in lead-niobium-germanate glasses
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In this work, we report the optical properties of Tm3+ doped lead-niobium-germanate glasses (GeO2-PbO-Nb2O5) for different Tm3+ concentrations ranging between 0.5 and 3 wt%. Judd-Ofelt intensity parameters have been determined to calculate the radiative transition probabilities and radiative lifetimes of excited states. Luminescence spectra and lifetimes were measured under 457 nm and 798 nm excitations. In this glass the infrared emission corresponding to the 3H43F4 transition is broader by nearly 40 nm if compared to fluoride glasses used for S- band amplifiers. The stimulated emission cross-section has been determined from the line shape of the emission spectra and the lifetime of level 3H4.
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Rolindes Balda, Rolindes Balda, Luis M Lacha, Luis M Lacha, Joaquin M. Fernandez, Joaquin M. Fernandez, } "Spectroscopic properties of Tm3+ ions in lead-niobium-germanate glasses", Proc. SPIE 5350, Optical Components and Materials, (14 June 2004); doi: 10.1117/12.528315; https://doi.org/10.1117/12.528315

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