tailieunhanh - Using the Judd-Ofelt theory to analyze the lattice structure of the Dy+3 ions doped lithium-sodium aluminoborate glass
Dy3+ doped lithium-sodium aluminoborate glass (60-x) B2O3-10Al2O3-15Na2O-15Li2O-xDy2O3 (ABLN: Dy3+) are prepared by the conventional melting procedure. Optical absorption and luminescence spectra have been measured at room temperature. Using the Judd - Ofelt (JO) theory, the intensity parameters Ωλ (λ = 2,4,6) have been evaluated for ABLN: Dy3+ glass. These intensity parameters are used to predict radiative properties that include electric (Sed) magnetic (Smd) dipole line strength, radiative transition probabilities (AR), lifetime (τR), branching ratios (βR) for the excited levels of Dy3+. In addition, the stimulated emission cross – sections (σλp) have been predicted for the transitions 4F9/2 → 6HJ (J=15/2, 13/2, 9/2). |
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