Gain properties of the transition emissions near the second telecommunication window in Ho3+-doped multicomponent heavy-metal gallate glasses

Ho3+‐doped strontium–aluminium–bismuth–borate glasses for green light emission

“…Earlier, Shen et al . reported gain properties of the transition emissions near the second telecommunication window in Ho 3+ ‐doped multicomponent heavy metal gallate glasses. The 1.2 and 2.0 µm emissions from Ho 3+ in glass ceramics containing BaF 2 nanocrystals were investigated by Zhang et al .…”

Up-conversion luminescence in germanate glass and double-clad optical fibre co-doped with Yb3+/Eu3+ ions

“…Among oxide glasses, germanate glasses owing to their good capacity for dissolving lan− thanides, chemical resistance, good mechanical properties, high thermal stability are good candidates for constructing optical fibres. Furthermore, low phonon energy (~850 cm -1 ) results in longer lifetimes of the metastable energy levels, thus germanium−based glasses are suitable for the imple− mentation of up−conversion schemes [10][11][12][13][14][15][16]. The up−con− version luminescence processes have been studied in Yb 3+ / Eu 3+ ions also in glass−ceramics, as well as phosphors but not in germanate glasses and optical fibres [17,18].…”

Upconversion luminescence of Yb3+/Tb3+co-doped tellurite glasses

“…It has to be noted that development of upconversion fiber source, entails the elaboration of thermally stable, low phonon energy host glass which meets the optical and fibre technology requirements. Tellurite glasses, thanks to a good solubility of rare earth elements (2 mol %) as well as a low phonon energy (780 cm -1 ) enable an effective conversion of IR radiation to VIS radiation and make an alternative to fluoride as well as to HMO glasses [10][11][12][13][14]. Moreover, good mechanical properties as well as high thermal stability makes it possible to form them into optical fibers.…”