Optical intensities of Pr3+ ions in transparent oxyfluoride glass and glass–ceramic. Applications of the standard and modified Judd–Ofelt theories

Superbroadband near-infrared emission and energy transfer in Pr^3+-Er^3+ codoped fluorotellurite glasses

“…The larger Ω 2 value of Pr 3+ in fluorotellurite than those other fluoride contained oxide glasses indicates a stronger asymmetry and covalent environment of Pr 3+ in fluorotellurite glass [20,21]. A similar result is also obtained for Er 3+ -doping, in which the value of Ω 2 is larger than those ZnF 2 contained tellurite glasses [22].…”

Spectroscopic calculation of NaYF4 contained transparent glass ceramics doped with different content of Nd3+

“…Spectroscopic analyses of the precursor glasses and glass ceramics focusing on 1058 nm emission of Nd 3+ were carried out, and the relevant optical parameters were calculated by using Judd-Ofelt theory, which has been used to evaluate the spectroscopic properties of other glass ceramics system successfully [10,11]. To the best of our knowledge, analogous work on this system has not yet been reported.…”

Structural, absorption and fluorescence spectral analysis of Pr3+ ions doped zinc bismuth borate glasses

“…As a general conclusion,˝2 parameter increases with asymmetry of the local structure and with the degree of covalency of the lanthanideligand bonds, whereas˝6 parameter decreases with the tendency of covalency. In addition,˝4 parameter is believed to be related to the bulk properties of the samples [31].˝2 is higher for the present glasses in comparison to oxy-fluoride [31], tellufluoro-phosphate [32], fluorozirconate [33], mixed-halide [33] and ZBLAN glasses [34] except for ZBP 1 glass sample. This indicates that the asymmetry and covalency of Pr 3+ ions in the zinc bismuth borate glasses are stronger than those in the others glasses mentioned above.…”