Structural and spectroscopic characterization of Yb3+ doped Lu2O3 transparent ceramics

Abstract Yb 3+ doped Lu 2 O 3 transparent ceramics were fabricated by the solid-state reaction method and sintered in H 2 atmosphere. Structural and spectroscopic properties of Yb:Lu 2 O 3 ceramics were studied. The Yb:Lu 2 O 3 ceramic structure, and the lattice parameter are refined with the Rietveld method. Yb:Lu 2 O 3 has broad absorption and emission bands with a long fluorescence lifetime (1.31 ms). The energy level diagram is calculated based on the absorption and emission spectra, Yb 3+ in Lu 2 O 3 ceramics exhibits a big splitting energy of the 2 F 7/2 ground state (1023 cm −1 ). Furthermore, the gain cross-section ( σ g ) is estimated with different β values.