Judd-Ofelt Analysis of Sm3+ Doped Alkali Borate Glasses for Optoelectronic Applications

A new series of Sm3+ doped Alkali borate glasses have been prepared following the conventional melt quenching technique. The optical properties of the prepared glasses were explored through absorption, luminescence and decay measurements. The Judd-Ofelt (JO) intensity parameters O-lambda (lambda=2, 4 and 6) were evaluated from the absorption spectra to examine the symmetry of the ligand environment around Sm3+ ions site. By using the JO parameters and refractive indices of the studied glasses, radiative parameters such as transition probability (A), branching ratios (beta(R)), stimulated emission cross-section (sigma(E)(P)) and radiative lifetime (tau(R)) have been determined from the emission spectra following the JO theory. The excited state lifetime and the quantum efficiency of the Sm3+ doped title glasses pertaining to the (4)G(5/2) excited level have been determined through lifetime measurements and the results were discussed and reported