Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11019659 | Physica B: Condensed Matter | 2019 | 29 Pages |
Abstract
Phosphate glasses with chemical compositions of (42- x/2) P2O5-(42- x/2)Na2O-15ZnO-xSm2O3 were synthetized by melt quenching method. We investigated the influence of Sm3+ doping on the optical properties of phosphate glasses. X-Ray Diffraction indicates that the samples have an amorphous structure. DSC measurements show a good thermal stability of phosphate glasses. Using the absorption spectra, Judd-Ofelt analysis was applied to absorption bands of Sm3+ (4f5) to carry out the three phenomenological parameters of Judd-Ofelt (JO). According to the obtained values of Ω2, Ω4 and Ω6, some radiative properties were theoretically determined. Photoluminescence (PL) spectra show three transitions of Sm3+: 4G5/2â¯ââ¯6H5/2 (600â¯nm), 4G5/2â¯ââ¯6H7/2 (564â¯nm) and 4G5/2â¯ââ¯6H9/2 (645â¯nm). The concentration dependency of PL intensity was investigated. The quenching of the PL intensity occurs at the Sm3+ concentration above 1%. The predicted lifetime (Ïr) calculated by using JO method and the measured lifetime (Ïmea) determined experimentally for 4G5/2 level, were discussed and compared with those of other works. With the weak spectroscopic quality factors Ω4/Ω6 (0.76), we expect a relatively prominent infrared laser emission.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
H. Largot, K.E. Aiadi, M. Ferid, S. Hraiech, C. Bouzidi, C. Charnay, K. Horchani-Naifer,