Determination of the Judd–Ofelt parameters of the optical transitions of Sm3+ in lithiumborate tungstate glasses

Influence of tungsten on the emission features of Nd3+, Sm3+ and Eu3+ ions in ZnF2–WO3–TeO2 glasses

“…The closer observation of these spectra further indicates that 6 H 5/2 → 6 F 7/2 transition is a threefold triplet. Due to certain self adjustment of Sm 3+ environment in the glass network, there may be a degeneracy of 6 H 5/2 ground state in the crystal field [62]; such degeneracy leads to the observed splitting of this transition. The luminescence spectra of Sm 3+ are similar to those reported for a number of other glass systems [62][63][64].…”

“…Due to certain self adjustment of Sm 3+ environment in the glass network, there may be a degeneracy of 6 H 5/2 ground state in the crystal field [62]; such degeneracy leads to the observed splitting of this transition. The luminescence spectra of Sm 3+ are similar to those reported for a number of other glass systems [62][63][64]. The high intensity of the luminescence bands of Sm 3+ ion in SmW 15 glass indicates the quenching of luminescence in this glass is low.…”

Judd–Ofelt analysis of spectroscopic properties of Sm3+ ions in K2YF5 crystal

“…The Judd-Ofelt (JO) theory was shown to be useful to characterize radioactive transitions for RE-doped solids, as well as aqueous solutions, and to estimate the intensities of the transitions for rareearth ions [15][16][17][18][19][20][21][22]. This theory defines a set of three intensity parameters, ˝ ( = 2, 4, 6), that are sensitive to the environment of the rare-earth ions.…”

Spectral properties and dynamics of luminescent states of Pr3+ and Tm3+ in lead borate glasses modified by PbF2

“…The increasing importance of rare-earth-doped glasses based on heavy metal oxides (PbO, Bi 2 O 3 , TeO 2 , Nb 2 O 3 , WO 3 [1][2][3][4][5][6]) have a great significance for potential applications in optical devices and laser technology [7,8].…”