Lasing transition (4F3/2→4I11/2) at 1.06 μm in neodymium oxide doped lithium boro tellurite glass

Lithium boro tellurite (LBT) glass doped with neodymium oxide has been prepared and characterized by XRD, FTIR and SEM analysis. Judd–Ofelt theory has been applied to evaluate the best fit intensity parameters. The trend found in the JO intensity parameter is Ω6>Ω4>Ω2 If Ω6>Ω4, the glass system is favourable for the lasing emission 4F3/2→4I11/2 in the IR wavelength. Pumping with a LED excitation source at 495 nm, we observed an intense and sharp NIR lasing transition 4F3/2→4I11/2 at 1065 nm. Stimulated emission cross sections (σPE×10−20 cm2) for NIR lasing transitions 4F3/2→4I11/2 and 13/2 are 2.67 and 0.83, respectively. Similarly, the lifetimes (τmea) have also been measured for both NIR emissions and the values are 60.6 and 46.4 μs for this neodymium oxide doped LBT glass.