Near-IR emission in Pr3+single doped and tunable near-IR emission in Pr3+/Yb3+ codoped tellurite tungstate glasses for broadband optical amplifiers

The influence of Pr3+ content on luminescence and optical behavior of TeO2–WO3–PbO–Lu2O3 glass

“…6, the overall PL intensity first considerably increases when passing from sample TWPLuPr-1 (with the Pr 3+ ion concentration N = 1.39 Â 10 20 cm À3 ) to sample TWPLuPr-2 (N = 1.31 Â 10 21 cm À3 ) and then drastically decreases for sample TWPLuPr-3 (N = 2.48 Â 10 21 cm À3 ), being a manifestation of the PL concentration quenching. A similar behavior of PL has been recently observed by us for Pr 3+ -doped TWPLa glasses [9] and by Belancon et al [29] for another tellurite glass, namely the 71%-22.5%WO 3 -5%Na 2 O-1.5%Nb 2 O 3 host, doped with Pr 3+ ions of various concentrations.…”

Enhanced 1.53μm radiative transition in Er3+/Ce3+ co-doped tellurite glass modified by B2O3 oxide

“…Compared with the Er 3+ single-doped case (TGE sample), Er 3+ /Ce 3+ co-doping for TGB0 glass sample improves the glass thermal stability a little. The glass transition temperature T g increases by about 0.6°C, the onset crystallization temperature T x increases by about 2.9°C and the difference DT (=T x À T g ) increases by about 2.3°C, respectively, which has a similar result in the 80TeO 2 [22]. In the former glass system, for example, the glass transition temperature T g increases from 396 to about 397°C when the Nb 2 O 5 content increases from 0.01 to 1 mol% in the glass, which is mainly attributed to the increase in the average cross-link density and the number of bonds per unit volume [21].…”

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

“…In order to expand the bandwidth and increase the population distribution of specific energy levels, some RE 3+ co-doped schemes such as Er 3+ /Yb 3+ , Tm 3+ /Er 3+ , Tm 3+ /Yb 3+ , Er 3+ /Nd 3+ and Ho 3+ /Er 3+ [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] have been explored. However, the favorable doping host is low-phonon glasses such as sulfide, halide, tellurite and heavy-metal oxide glasses, which are almost impossible to fabricate the channel waveguide devices unless special equipment and complicated technique are employed.…”