Chiang Mai Journal of Science

 We present spectroscopic properties of 81.4 B₂O₃ – 11 Li₂O - 5.1 Na₂O -2.5 Al₂O₃ glass materials doped with different concentrations of neodymium ion. From the measured intensities of various absorption bands of these glasses, Judd-Ofelt parameters, Ω_λ, have been evaluated. The bonding environment surrounding the rare earth ion has also been discussed. With the help of Ω_λ parameters and luminescence data for various emission lines, radiative properties for different emission lines have been calculated and discussed. The high value of s_p for the ⁴F_3/2 ® ⁴I_13/2 transition suggests that Nd³⁺ doped lithium borate glass specimen drawn in the form of a fiber with some suitable modifications (doping with high quality of Nd₂O₃) can be used as an efficient single mode fiber amplifier operating at 1.3 μm for telecommunication purposes.