Laser Operation of Yb3+-doped Lu-based Oxide Ceramics: A Comparative Study

We report on a detailed comparative study of micro-structure, optical properties, spectroscopy and laser performance of two Lu-based oxide transparent ceramics produced from laser-ablated nanoparticles - Yb:Lu 3 Al 5 O 12 and Yb:Lu 2 O 3 . A compact diode-pumped Yb:Lu 3 Al 5 O 12 ceramic laser generated 5.65 W at 1031 nm with a slope efficiency of 67%.