Optical absorption and spectroscopic characteristics of Tm 3+ ions doped NaY(MoO 4) 2 crystal

Abstract

The polarized absorption and emission spectra have been measured for the Tm 3+ doped NaY(MoO 4) 2 crystal and spectral parameters have been estimated from the absorption data based on the Judd–Ofelt theory. The effective intensity parameters Ω t eff ( t = 2, 4, 6) are 11.67 ×10 −20, 2.21 × 10 −20, 1.74 × 10 −20 cm 2, respectively. From the intensity parameters, the radiative transition probabilities, radiative lifetimes, branching ratios and the emission cross-section have been calculated. In comparison with other Tm 3+ doped laser crystals, Tm 3+:NaY(MoO 4) 2 crystal has potential as a promising laser crystal.