<title>Spectroscopic properties of trivalent samarium ions in glasses</title>

Photoluminescence properties of Sm3+ in LBTAF glasses

“…There is a reasonable agreement between measured and calculated branching ratios. As can be seen from Table 4, 4 G 5/2 -6 H 5/2 and 6 H 7/2 transitions contain magnetic dipole interaction due to the selection rule DJ ¼ 0; 71 [13]. The stimulated emission crosssection (s e ) of 4.32 Â 10 À22 cm 2 estimated for the 4 G 5/2 -6 H 7/2 intense emission band of 1.0 mol% Sm 3+ -doped LBTAF glass is comparable with the other reported values [1,20,29].…”

“…The majority of the transitions in the spectra originate from induced electric dipole interactions with selection rule DJp6. Certain transitions also contain magnetic dipole contribution with selection rule DJ ¼ 0; AE1, for example the 6 H 5/2 -4 G 5/2 transition at 563 nm [13]. In the visible region, all the transitions are spin forbidden and hence the absorption bands are weak in intensity.…”

Structural and spectroscopic properties of self-activated monoclinic molybdate BaSm2(MoO4)4

“…Local environment of samarium in glasses is formed mainly by chemical properties of samarium itself; this local environment is the result of minimum of interaction potential energy that is attained during the time of glassy structure formation. Judd-Ofelt parameters of samarium in different glassy matrices are rather close to each other [60]. Typically, in glasses, the 4 G5/2 → 6 H7/2 transition dominates in the luminescence while 4 G5/2 → 6 H5/2 and 4 G5/2 → 6 H9/2 bands are smaller.…”

Absorption and fluorescence studies of Sm3+ ions in lead containing sodium fluoroborate glasses

“…Certain transitions also contain magnetic dipole contribution with selection rule DJ¼0, 71, for example the 6 H 5/2 -4 G 5/2 transition at 563 nm [32]. In the visible region, all the transitions are spin forbidden and hence the absorption bands are weak in intensity.…”

“…The concentration quenching of the 4 G 5/2 fluorescence has been analyzed in different glasses which include fluoroborate [12], fluorozirconate [13], germanate [14] and tellurite [15] glasses at ambient conditions. Especially, glasses doped with Sm 3 þ ions were extensively investigated by optical spectroscopy to characterize these materials for optical devices applications [16,17].…”