Solid State Science and Technology, Vol. 15, No 2 (2007) 28-33
OPTICAL TRANSITIONS OF Er3+ DOPED TELLURITE GLASSES
M. R. Sahar, Sulhadi and M. S. Rohani
Advanced Optical Material Research Group, Physics Dept, Faculty of Science, Universiti Teknologi Malaysia, 81310 Skudai, Johor DT, Malaysia.
Er3+ doped tellurite glasses of molar composition (80-x)TeO2-18ZnO-1MgO-1Li2O-(x)Er2O3 system (0.5mol%≤x≤2.5mol%) have successfully been made by melt quenching technique. The absorption spectra were measured and the Judd-Ofelt analysis was performed. It is found that the spectrum of UV-Vis-NIR spectroscopy is consists of absorption peaks around 1530nm, 974nm, 798nm, 652nm, 544nm, 522nm, 488nm, 452nm, 444nm, and 406nm, and are correspond to the transitions from ground state 4I15/2 to the excited state of 4I13/2, 4I11/2, 4I9/2, 4F9/2, 4S3/2, 2H11/2, 4F7/2, 4F5/2, 4F3/2, and 2H9/2 respectively. The Judd-Ofelt parameters Ω2, Ω4, Ω6 have been used to correlate between the composition and the change of structure of the host glass. It is found that the Er3+ content exhibits some influences on the spectroscopic properties of the optical transition for Er3+ions.
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