Laser performance of RE 3+ :YAG Double-Clad Crystalline Fiber Waveguides

We report on laser performance and modeling of Yb:YAG and Tm:YAG double-clad crystalline fiber waveguide for high power applications, with 53.6% slope efficiency and 27.5-W output for Yb:YAG, and 31.6% and 46.7-W for Tm:YAG.