Population dynamics of the 3F4 and 3H4 levels in highly-doped Tm3+:ZB(L)AN glasses

Synthesis and infrared spectroscopic properties of Tm3+-doped phosphate glasses

“…• The presence of OH groups which is known to strongly affect IR fluorescence lifetimes of RE 3+ ions in phosphate glasses [34,35] [32,36]. This effect may explain why the 1470 nm emission increases with the Tm 3+ concentration (for x < 0.75 mol%) in the studied glass whereas in other glasses an opposite effect is observed [25].…”

“…7. The nonexponential behavior is the result of the crossrelaxation process from 3 H 4 to 3 F 4 in a diffusion-limited regime ( [32,33] references therein). A complete analysis of the decay curve as a function of Tm 3+ will be published in a forthcoming paper.…”

Spectroscopic investigation and optical characterization of novel highly thulium doped tellurite glasses

“…The same author [6], one year later, reported a fiber laser with the same doping concentration of 4 wt%, but 20 cm long and with a core diameter of 50 lm. Tm-doped ZB(L)AN glasses were also investigated with concentrations of Tm 3+ ranging from 0.5 to 12 %mol [7] in order to achieve short, compact lasers.…”

Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers: Fabrication and optical characterization

“…Tm 3+ is a suitable ion for emission at around 2 μm and recent research activities dealt with Tm-doped silica, fluoride and tellurite glasses and optical fibers [2][3][4][5][6][7]. Among possible glass hosts, tellurite glasses combine the lowest phonon energy among oxide glasses with the higher chemical stability towards non oxide glasses [8,9].…”