Fig. 1. Single-clad Yb∶YAG crystal waveguide. (a) Structure of Yb∶YAG crystal waveguide; (b) photograph of the end-face of Yb∶YAG crystal waveguide

Fig. 2. Experimental setup for pulse output from crystal waveguide. (a) Experimental setup for pulse output; (b) photo of actual setup for pulse output

Fig. 3. Output power of the laser. (a) CW output power of the laser under different pump power; (b) output power of Q-switched laser at repetition frequency of 10 kHz

Fig. 4. Output of the pulse laser. (a) Pulse sequence; (b) pulse profile

Fig. 5. Beam quality fitting curves