Linear and nonlinear optical properties and luminescence of Dy~(+3)-doped aluminoborate glasses: Judd-Ofelt investigation

摘要

The nominal glasses composition ((40-x) % H_3BO_3-30% CaO-30% Al_2O_3- x Dy_2O_3), where x = 1, 2, 3, 4, 5 and 6) were prepared using the melt quenching technique. The absorption spectra reveal the common normal 13 transition peaks of the Dy_2O_3-doped glasses. The linear and nonlinear optical properties were calculated. The Photoluminescence spectra and the decay lifetime were examined. The Judd-Ofelt parameters trend was Ω_4> Ω_2 > Ω_6. The oscillator strength of the experimental, and calculated electronic dipole absorption transition were estimated. The radiative life-time, the radiative branching ratio, the emission and absorption transition cross section were also calculated. The gain coefficient of the transitions was predicted. All the calculated parameters were compared with the previous work. The results reveal that the current glasses composition is a good candidate as a lasing host material and the glasses are highly efficient composition when using in the optical communication fibers.