Excited state absorption mechanisms of red to UV and blue conversion luminescence in Tm3+ doped fluorophosphate glass

Optical spectroscopy of thulium-doped oxyfluoroborate glass

“…The emission bands observed in the spectrum are 1 D 2 → 3 H 6 (366 nm), 1 D 2 → 3 F 4 (453 nm), 1 G 4 → 3 H 6 (480 nm) and 1 D 2 → 3 H 5 (516 nm) in which blue band at 453 nm is very intense. The up-conversion spectrum in the BZL glass is similar to the up-conversion spectrum of thulium-doped fluorophosphate glass with 657 nm excitation [19]. In order to understand the up-conversion mechanism, down conversion spectrum of 1 D 2 level at 355 nm was also measured and is shown in Fig.…”

Tm3+ doped Bi2O3–GeO2–Na2O glasses for 1.8μm fluorescence

“…(10) and (11), the values of the peak absorption and emission cross-sections for BGN-1-6 samples decrease gradually with increasing Tm 3+ concentration. [18], tellurite [26] and germanate glasses [27], but is smaller than phosphate [28], ZBLAN [19,29] glasses, and oxyfluoride glass-ceramics [30]. The large value of r e  s R indicates that the BGN glass is promising material for optical amplification.…”

Optical spectroscopy and frequency upconversion properties of Tm3+ doped tungstate fluorophosphate glasses

“…Upconversion laser emission and amplified spontaneous emission studies have been reported for Tm 3ϩ doped optical fibers and channel waveguides. 1,2,12,13 Recently a number of reports became available where detailed spectroscopic properties of Tm 3ϩ were analyzed in glasses such as fluorozirconate, 14,15 fluoroindate, 16 -18 fluorophosphate, 19,20 fluoroindogallate, 21 and silicate. 22 Each glass host presents certain characteristics that favor specific applications.…”